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Radio Control Forum => Electrics => Topic started by: RRCA on November 09, 2013, 05:44:19 PM



Title: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 09, 2013, 05:44:19 PM
Well hey there guys  ;)

This is my first thread in this forum and nowt like starting it with something big I say  :D

I have chosen for my winter project this year to build a B-29 Superfortress. Specs are as follows :-

Wingspan -106"
Length -84"
Motors -4 x 500kV Brushless Outrunners with 4 x 65Amp ESC's with BEC
Servoless trunion retracts with sequencing doors
Channels x 7 Aileron, Elevator, Rudder, Throttle, Flaps, Retracts, Bomb bay
Power -2 x 6 Cell 5000mAh Lipo batteries

Construction will be with balsa, ply and depron to keep it light with carbon fibre for strengthening. Their are no plans for this size of model and I will be basically using the Guillows B-29 plan as a guide. I have spoken to a local printer who has kindly said he can print the plans out in sections to the desired size then I will make the changes needed to build this large airframe. I'm hoping to get the final plans reprinted to be made available for others if they wish to build the bomber for themselves.

Its going to be a challenge but I think it will be well worth the effort once complete. This is going to be the official thread for this build so keep checking for the progress and look forward to your input (keep it kind, don't want any negative input or I'll cry and give up lol  ;) )

Thanks for reading my first thread

Rob ( RRCA) https://www.facebook.com/RobsRadioControlledAircraft?ref=hl



Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Lindy on November 09, 2013, 06:47:19 PM
Now that sounds like an ambitious project! Any historic nose art in mind?


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 11, 2013, 01:58:52 AM
Now that sounds like an ambitious project! Any historic nose art in mind?

I'm favouring the bomber in the image in my first post Miss America '62 from the 40th Bomber Wing, however I do have a selection of B-29 Decals that I can print out resized to the scale of the Fortress onto clear adhesive sheet and they are for as follows:-

Lucky Leven
Double Exposure
Dearly Beloved
Celestial Queen
The Outlaw
Joltin' Josie
United Notions

Images of all these decals are provided below. I'm assuming most of you would think Enola Gay or Fifi would of been on the list but no. These are common B-29's that are modelled and wanted something rarely seen at shows etc :)



Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on November 11, 2013, 07:28:37 AM
One of my favourite aeroplanes!  I shall observe with great interest.

I do have several books on this aeroplane and so if you want any "detail" I may be able to help.

Have you thought of doing a Korean one?


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 12, 2013, 01:27:24 AM
One of my favourite aeroplanes!  I shall observe with great interest.

I do have several books on this aeroplane and so if you want any "detail" I may be able to help.

Have you thought of doing a Korean one?

I've not actually to be fair Dave, however you could help me very muchly. I am in need of some good quality cockpit images and I mean all around the cockpit and also good drawings. If you could muscle up some of them for me that would be great and also gun turrets etc, anything you think I should have to gie the bomber a good scale appearance :)

Many thanks


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on November 12, 2013, 04:56:52 AM
Might be an idea then if I could have your email address as there are quite a few pictures but this is a sample.....


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 12, 2013, 01:54:24 PM
Might be an idea then if I could have your email address as there are quite a few pictures but this is a sample.....

Thanks Dave. Ive PM'd you my email address :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Lindy on November 12, 2013, 10:27:29 PM

Quote

I'm favouring the bomber in the image in my first post Miss America '62 from the 40th Bomber Wing, however I do have a selection of B-29 Decals that I can print out resized to the scale of the Fortress onto clear adhesive sheet and they are for as follows:-

Lucky Leven
Double Exposure
Dearly Beloved
Celestial Queen
The Outlaw
Joltin' Josie
United Notions

Images of all these decals are provided below. I'm assuming most of you would think Enola Gay or Fifi would of been on the list but no. These are common B-29's that are modelled and wanted something rarely seen at shows etc :)


You have some great choices there, I agree with you on the common ones... Over done. My vote would go for either "Celestial Queen" or "Double Exposure" ;)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 13, 2013, 02:19:38 AM
Thanks Lindy. Your actually favouring the one I'm more turning too 'Celestial Queen'. The more I look at that nose art the more I wanna do it :)

As regarding the progress of the plans, I have managed to calculate that the pdf files of the Guillows B-29 need to be increased to 57%. Doing the plans to this size doubles the size of everything perfectly. So far I have worked out the two wing panels to be 49.5", the fuselage is 74" in length, 82" once the fin, rudder and tailplane have been added and 7.5" wide, the tailplane is 34" in span and the fin 15.75" in height. The construction will be about 80% the same as the Guillows model, the other 20% will be modifications regarding reinforcing for the retracts and outrunners in the engine nacelles, the wings for the flaps, (I want to try and have the flaps incorporate the rear section of the engine nacelle that also drops with the flaps) and also mods for the wing attachments and bracing rods and joining spars. I'm going to design the model to be broken down into four sections. The two wing halves and the fuselage will be split about six inches aft of the trailing edge of the wing for ease of transportation.

Their is still a hell of a lot of work to be done on the plan before the construction begins and as of this moment in time I am revising the power output of the model. I think the original idea of four 500kV outrunners is going to be too powerful and it will fly too fast. The construction of this airframe is going to be strong but as light as I can possibly get it as I do not plan to fly the model in winds resembling the strength of a fart upwards! Pansy your all probably thinking I know, but I like to relax when flying big stuff like this, but with that in mind I am also building into the airframe the ability to access all of the wiring and electronics so if I need to change or alter anything its all going to be easily accessable without having to butcher the airframe to replace components. Its a lot of work I know, but I might as well do it all now and get it right than miss stuff out and have to faff around later making alterations.

Anyway, I'll keep you all posted on the progress as I do stuff. Even I'm getting excited now  ;D ;D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on November 13, 2013, 05:04:20 AM
These Korean ones are quite cool?



Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: carpetbagger on November 13, 2013, 06:38:06 AM
Now that is a huge project - can't wait for the build thread. You should be able to find "official" three-views of the B-29.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 13, 2013, 06:45:30 AM
Now that is a huge project - can't wait for the build thread. You should be able to find "official" three-views of the B-29.

This will end up being the official build thread mate and thank you. I have a few three views including blue prints of it :)

These Korean ones are quite cool?

I quite like 'Atomic Tom' Dave although I'm still swinging towards the 'Celestial Queen' :)



Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: carpetbagger on November 13, 2013, 09:32:38 AM
"Celestial Queen" is my vote because I like hot chiks!

I have never fooled with multis and reading about your project leads me to a question: I assume all motors operate on the same throttle, or do you have multiple throttle controls. And if running on the same throttle command is there a method of synching the motors? Or does one just whap it wide open and go with it . . .?


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 13, 2013, 03:48:16 PM
"Celestial Queen" is my vote because I like hot chiks!

I have never fooled with multis and reading about your project leads me to a question: I assume all motors operate on the same throttle, or do you have multiple throttle controls. And if running on the same throttle command is there a method of synching the motors? Or does one just whap it wide open and go with it . . .?

I'm not sure how it would work with the old brushed motors but brushless outrunners, they all operate from the one throttle control. Each motor has to have its own ESC though but are all connected via Y leads however in this case I will be using two 14.8v or 22.2v Lipo batteries, one for each side of the aircraft. The two port in other words will run off one battery and the two starboard off the other. If we stick to the left side the power to each motor will run in series. The leads that connect too the receiver will be connected to each other via a Y lead however the outboard motors ESC positive red power lead will be removed from the plug so the inboard esc will take the power but the outboard only takes the control commands, this eliminates the possibility of the two ESC's both providing power to the receiver and leading to a possible confliction resulting in damage to the electrics and ultimately resulting in a crash. Its better explained on YouTube on RCInformers Channel with the build review he does of FMS's P-38 Lightning. I've probably explained it a little incorrect and will be returning to said video when it comes to installing the electrics for the B-29 but basically then you have one lead from the two left esc's coming out of the wing root that connect to another Y lead that then plugs into the receiver. The receiver is powered by a seperate BEC then so the Lipo batteries only provide power directly to the outrunner motors. On the left two motors too, the power control wire and the negative wire are swapped over, this then reverses the direction of the motors so you then get counter rotating propellors which thus eliminates the possibility of torque rolling the aircraft over.

This method will obviously be thoroughly tested before I install it into the model to insure it all works without any issues beforehand on a specially made rig I will be building as I will be testing it with the four scale 4 blades props mounted to the motors to include the extra load on the outrunners with the props being fitted :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on November 13, 2013, 04:15:15 PM
"Celestial Queen" is my vote because I like hot chiks! :( ;)


I think I recall I did at one time but frankly a bit of a nuisance now!!

My view is Rob, that nearly all  American  service aircraft had a "chick" in the nose-art and it became rather hackneyed.  "Tom" is quite original and I like the blue panels as well.

Have to say as well that reading your comments about setting up the motors does demonstrate how out of touch I am after an absence of some 40 years.   


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 14, 2013, 02:27:20 AM
"Celestial Queen" is my vote because I like hot chiks! :( ;)


I think I recall I did at one time but frankly a bit of a nuisance now!!

My view is Rob, that nearly all  American  service aircraft had a "chick" in the nose-art and it became rather hackneyed.  "Tom" is quite original and I like the blue panels as well.

Have to say as well that reading your comments about setting up the motors does demonstrate how out of touch I am after an absence of some 40 years.   

Come on Dave it cant be that bad surely  ;D

Trust me I'm still on a learning curve with it all as only recently since I started doing this again been converted to electric but its fascinating doing it and admit I'm enjoying it more now than ever and its a lot cheaper to buy an outrunner electric motor than it is to buy a glow engine as before.

One thing I've not mentioned yet are the servo's. Their will be 13 in total, one for steering nose wheel, one for rudder, two for elevators, two for ailerons, two for flaps, three for sequencing undercarriage doors and two for the bomb bay doors


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on November 14, 2013, 03:46:53 AM
Still impressed old boy - but I am presently re visiting my well spent youth and building the models I used to fly in my teens! And some free flight to boot! But keeps me fit - I hope!

By the way did you get the pictures I sent by email?


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 14, 2013, 04:32:33 AM
Still impressed old boy - but I am presently re visiting my well spent youth and building the models I used to fly in my teens! And some free flight to boot! But keeps me fit - I hope!

By the way did you get the pictures I sent by email?

I did my friend thank you. I was meant to reply but I got caught up in something and then had to go to work of which I've not long finished and need to sleep :-\

Attached is a screen capture of the work I've done on the plan for the fuselage. If the image is good enough and you can see the measure rule at the top of the screen thats in inches. Should give you an idea how big the plan is for just the fuselage  8)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Blooper on November 14, 2013, 05:21:16 AM
hello
re your motor set up, i would personally have the two inner motors on one battery and the two outers on the other, that way if one battery packs up you will at least not get the model swinging to one side.

my 11' lanc has one battery per motor.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Pit on November 14, 2013, 06:04:41 AM
That's some undertaking! Just out of curiousity, what graphics/CAD program are you using?

Pete


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Monique on November 14, 2013, 06:23:24 AM
That be Photoshop Essentials Pete :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 14, 2013, 09:34:18 AM
hello
re your motor set up, i would personally have the two inner motors on one battery and the two outers on the other, that way if one battery packs up you will at least not get the model swinging to one side.

my 11' lanc has one battery per motor.

See Dave I'm still learning :) That is actually a valid point and a good idea, so I will be now setting the motor up in the configuration just mentioned

That's some undertaking! Just out of curiousity, what graphics/CAD program are you using?

Pete

It's Adobe Photoshop CS5 I use and Adobe Lightroom, two programs I've used for many years because I'm a professional photographer.

Its a program I also use designing my own plans because it allows me save the images simply to pdf format so detail is kept and easier for printing. The file for the above plan currently is 129megabytes in size


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 15, 2013, 07:34:49 AM
The plans have now been finished and resized and saved in pdf format ready to go to the printers later on today.

I've taken some screen shots of the plans as I was working on them but will hopefully take some pictures of the full plans when I get them done.



Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Lindy on November 15, 2013, 05:28:16 PM
You do realize that your tail plane is by itself is as big as any plane I've ever built...  :D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 16, 2013, 11:00:15 PM
You do realize that your tail plane is by itself is as big as any plane I've ever built...  :D

Haha  :D At least I know where to go if I want a to scale escort fighter lol


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 16, 2013, 11:02:25 PM
The plans are now at the printers and I am due to collect them on Monday :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Blooper on November 17, 2013, 08:40:32 AM
looking forward to this one.

you not started yet.  ;D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on November 17, 2013, 12:36:41 PM
Wel, I'll go to the foot of our stairs!!  Yes - that is a really big fellow.  And it is nice to see that you intend adding a bit of detail. I am always curious when I have viewed the large scale models - last was a half scale Tiger Moth - to see that detail is minimal. When you  look at some of the plastic models people make - say 1/48 or 1/32 and 1/24th scale  where the wingspan might be a foot or so the detail there is incredible.  So I have always wondered why? The Scale Glider chaps do go into quite a bit of detail - including often emulating the construction.

Glad you got the pictures - a bit concerned because sometimes things can go astray.  I did not send details of the U/C legs etc. as I assume you will be a bit curtailed by the requirements of the retract system?  (See below however).

As a matter of interest can you say where the test flight will be - might organise a coach party! ::) :) 



Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 17, 2013, 03:28:32 PM
looking forward to this one.

you not started yet.  ;D

Not yet. It will more than likely be next weekend I start as I'm in work all week

Wel, I'll go to the foot of our stairs!!  Yes - that is a really big fellow.  And it is nice to see that you intend adding a bit of detail. I am always curious when I have viewed the large scale models - last was a half scale Tiger Moth - to see that detail is minimal. When you  look at some of the plastic models people make - say 1/48 or 1/32 and 1/24th scale  where the wingspan might be a foot or so the detail there is incredible.  So I have always wondered why? The Scale Glider chaps do go into quite a bit of detail - including often emulating the construction.

Glad you got the pictures - a bit concerned because sometimes things can go astray.  I did not send details of the U/C legs etc. as I assume you will be a bit curtailed by the requirements of the retract system?  (See below however).

As a matter of interest can you say where the test flight will be - might organise a coach party! ::) :) 



The detail will be in areas most visible, like the cockpit area and although the undercarriage will be a basic tricycle retract system i will be making scale oleo struts to go over the heavy gauge rods and keeping to the twin wheel format as on the real aircraft.

As for the test flight, I'm unsure to the location of this as of yet. I will be hopefully joined a local flying field by the time its built so the test flight will more than likely be there, however I do tend to find a quiet field where I am on my own and undisturbed for test flights of big models. Its bad enough test flying let alone having an audience cheer you on adding pressure to you to make sure it doesn't pile in first flight haha :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 17, 2013, 04:13:30 PM
I've been thinking of another B-29 that I might model mine on. Anyone remember 'Kee Bird'?................ :)

For those that don't, 'Kee Bird' made a forced landing in a cold remote Artic range off Greenland and although the crew were picked up some three days after, the B-29 was left there in the same spot it came to rest for 50 years until a chap called Daryl Grenemier had a dream of recovering the bomber. The US goernment gave up possession of the Kee Bird to anyone willing to recover the B-29, and Daryl spent three years organising its recovery. Despite the conditions the Kee Bird remained almost preserved intact with very minimal work required to get it back into the air. After some months work and the loss of one of his closest friends, Daryl finally reached his goal and dream of flying the B-29 out of the Artic. Because it was just after the winter period at this time, snow was dominating the area around the B-29 but it was a rush to take the bomber off from the frozen lake before the ice became to thin to do so. While taxiing the Kee Bird across the bumpy terrian to the runway, the APU that was running at the back of the bomber broke away from its mounting. Fuel spilled onto the hot APU and it caught fire. By the time the bomber had been stopped, fire had already swept through the fuselage. Daryl and his crew all escaped without injury and could do nothing but sit and watch this priceless bomber burn. All the remains of the aircraft including the new engines and propellors would come to rest at the bottom of the frozen lake when it thawed, where it remains still to this day.

I thought that if I build the Kee Bird at least it will still be flying in some form :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 19, 2013, 05:56:47 AM
Well the printers totally got the plans wrong. They took it up on themselves to decide I must of got the measurements wrong with my plan and it was cm not inches it was meant to be because such a size model plane must of been wrong! Was not impressed one bit! So they are now reprinting to the correct size but due to work means I cannot get them until Friday.

On another good note, my vacuum former unit will be finished this weekend ready to form the cowls and dummy radial engines, gun turrets, clear fuselage blisters and the main nose/canopy. I will also be using this method to form the undercarrige doors and bomb bay doors


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 20, 2013, 08:12:56 AM
I'm scratching my head over something and this is aimed at anyone that has built an electric multi. I'm planning to have the motors rotating clockwise on the starboard wing and counter clockwise on the port. I'm using FMS's excellent scale 14" dia four bladed props but then realised I don't think they do counter rotating four bladers only three bladers for the 80" Mitchell B-25 or the P-38 Lightning. The P-38s 3 blades will be too small. The Mitchell's will be big enough bit not scale as the 29 swung 4 bladers.

So what do I do? Do I go for the larger 3 blades or do I stick to the 14" for blades and run all four outrunners the same direction? If I do, what are the chances the bomber rolling over or should it be fine with this set up?


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Blooper on November 20, 2013, 08:38:01 AM
i would go for the three blades for flight and the 4 blades for display.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Lindy on November 20, 2013, 10:54:35 AM

Haha  :D At least I know where to go if I want a to scale escort fighter lol

Gaa... Now you've got me thinking about a P-47N, and my brain hurts! :D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 20, 2013, 02:32:03 PM
My FMS P-47 has a 4 blader and it sounds awesome. I've been informed by a modeller with lots of experience that having all four motors rotating in the same direction will not effect the flight performance so I'm still king with the 4 bladed scale P-47 props. They look good and sound awesome.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 22, 2013, 09:47:01 AM
Happy bunny. Plans have now finally arrived and can now get on with the task of drawing on the extra mods for the R/C conversion :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 23, 2013, 03:30:22 PM
Not happy with conventional methods, I am currently designing a Fowler flap system for the B-29


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 25, 2013, 02:44:00 AM
I'm still in two minds about the powerplants for the 29? I was planning on four 500kV outrunners turning 14" 4 bladed props bit am now thinking it might be overpowered? I'm trying to design and construct it to keep the weight down to 10lbs or less. I want it to fly as scale like as possible and pretty slow not like a fighter place so am now thinking four 850kV outrunners swinging 14" 4 bladers could be enough. Any thoughts?


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on November 25, 2013, 04:29:09 AM
I am a complete amateur when it comes to electric motors and there are some useful works on the internet; but it seems to boil down to weight primarily and then the kind of performance required. I assume you will go for the slower revving motor as you will want a steady pull.

I have built a couple of "sport" vintage models and they are overpowered, certainly. But it seems to do no harm. One will fly quite happily on quarter throttle. Excess power is better than "marginal".

Years ago a chum of mine was a multi fan and as "glows" were the only option did not have the opportunity of contra - rotating engines. He never had any problems as I recall.

 


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Pit on November 25, 2013, 07:19:09 AM
I'm no "eggsburt" either, but flying electric primarily at "quarter throttle" is a good way to fry the bits.  You'll want to set up the system to where it operates in its efficiency rating (where you'll "cruise" at >65% throttle).  The motors usually have a published "efficiency" at a certain Amp draw with a certain Voltage.

All motors with individual ESC's and battery packs is the common way to set multis up and you'll probably need at least 38-40mm class motors on 5S to swing 14" x 4 blade props.  Your initial choice of 500kV motors with the 5S packs is a better choice than the 850.  Your 10# target weight sounds a bit low.  You're carrying 2# of batteries alone, plus 4 x ~200 grams of motor (another 2#).  That weight added to full-house control and electric retracts...good luck.  I don't think too many of the users of this Forum can offer adequate help.

BUT...

Good bets would be on WattFlyer (http://www.wattflyer.com/forums/) and The E-Zone (http://www.ezonemag.com/).  In any case, a prime piece of equipment would be a Watt-meter.  MotoCalc is also a good tool if it is a current version.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 25, 2013, 09:21:59 AM
That's twice now I have had the original option of 500kV said to be the best because of swinging the 14" 4 bladers so I think that will be the way to go although saying that I forgot about motocalc so will look at that as well. The weight is deffo a key factor it seems and until I get all the equipment needed to fit into the model weighed up only then will I roughly know what the weight target is going to be close too.

My 55" span P-47 weighs in at 4lb and is powered by a 500kV motor swinging a 4 blader so in theory 4 500kV motors should pull a model weighing in at 16lb around the sky easily so if I keep it below 16lb I should ve all good.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on November 25, 2013, 09:41:01 AM
Thank you Pit - something else I have learnt! I presume you mean burn it out by the way. I thought I was being clever and getting the max out to the battery!  Yes at  quarter throttle it was very slow and it was just an attempt to see how slowly it would fly. I would guess that normally it runs at 1/3rd to 1/2 throttle -but not "fast" enough even then! However being a vintage style model I do cut the motor after a minute or so and let it glide and then open up again if I want to gain more height, then repeat the process.

Must say these electric motors are quit complex and very fussy. With diesels and glows it was very much by "ear" - make sure it is not running too lean or over compressed and that was about it!  Hmmmm.... glad I have still got my diesels.........

But thank you again - I do not recall seeing anything in what I have read about using electric motors - mostly it centres on not abusing the lipos.

Sorry for digressing on your topic, Rob, but had to thank Pit.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 25, 2013, 09:51:06 AM
No that's fine mate its what we are all here for end of the day :) Electric motors aren't complex David just a bit of a scratcher trying to figure out the balance of weight and power. Lipo batteries are excellent provided they are balance charged properly and with brushless outrunners you stand a hell of a lot less a chance of burning out a motor than you do a brushed one. ESC's however can burn easy if not matched well. A low amp ESC coupled with a big powerful motor is a recipe for disaster.

On a diff note Dave, I don't suppose you have any good ebooks in pdf on the B-29 do you? :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on November 25, 2013, 03:10:41 PM
Thank you Rob - and no - at least I don't think so - not sure what an ebook is but do know a pdf.

I suppose having had years of experience with diesels and i/c engines I am more familiar and thus confident. Yes I have appreciated that the ESC and Motor need to be "matched" and so far have been a bit meticulous in this respect. I think too it is a generation thing but I don't like using anything to it's full potential so thought that running the motor below it's maximum capability was good! But one lives and learns.

I suppose it is a bit mean to taunt you but I do have the "Boeing B29 Superfortress - the Ultimate Look: from Drawing Board to VJ Day" by William Wolf.  It is possibly one of the most detailed books on any aeroplane that has been published.

Is there anything in particular that you are wanting in case I can copy it for you.

I fly sometimes at Sculthorpe which is just up the road (still MoD).  Washingtons were based there and I have to admit that when I am driving along the runway or peri. track I do have the odd fantasy!  


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 26, 2013, 12:07:42 AM
Thank you Rob - and no - at least I don't think so - not sure what an ebook is but do know a pdf.


An ebook is basically a downloadable book you can read on your pc or lappy or suppose I better mention it....Ipad/Tablet - but 9 times out of 10 they are in pdf format so chances are you may have one now :)

The bloody position of the front landing gear retract is doing my head in!!  >:(

I'm trying to keep the scale appearance as best as I can but because the nose wheel sits forward at an angle it means when the wheels go up they stop short of the UC doors so it means they wont shut. I need a retract unit that passes 90 degrees which I dont think exsist or I have to put the unit further up into the fuselage but that then means the front wheel wont be sat right then and it will be too close to the body of the bomber.

I could bend the strut forward but that then brings me back to the doors not being able to shut again. The only other option is to loose the scale look slightly at the front and have the retract unit 90 degrees to the front bulkhead and up 1/2 inch higher than I originally wanted, that then gives me an extra 1/2 inch clearance allowing the doors to shut but on the ground it will be 1/2 an inch lower than it should be. The tips of the 14" diameter props are gonna be close to lawn cutting as it is.

Oh the joys of building models eh?  ::)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Blooper on November 26, 2013, 04:12:01 AM
mount the retract on a moveable base, then you could retract the leg as far as it goes, then tilt the base to finish the movement.

just a thought, probably a crap one though.  ::)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 26, 2013, 10:29:07 AM
The principle is there and in theory could work if I hinged the mount and then used a servo connected to the sequencer that operates the uc doors. It would have to be a metal geared servo though and a good one cause is going to take a lot of strain with impacts and bumps


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 27, 2013, 04:48:14 AM
I have finally got the powerplant sorted for the B-29 :)

850kV brushless ourrunners x 4
40Amp ESC x 4 turning 11x5 four blade props on a separate bec
14.8V 3300mAh Lipo batteries x 2

These calculations are for two motors with one ESC each from one of the Lipos.

Batt Amps 66.0 Motor Amps 66.0 Motor Volts 12.6 Input (w) 832 Prop rpm 9848 Thrust (oz) 124.4 PSpd (mph) 46.6 Flight time (full throt ) 4.00 mins.

Those calculations have been done with direct drive props via MotoCalc with the airframe weight estimated at 6.5lbs empty ie no motors ESC or batteries fitted. The combination was tested by the program and it worked. The only final analysis issue being the batteries could run hot. Its answer for reducing heat was to reduce the diameter of the props or they're pitch or increasing the power output of the batteries. Calculated using 6 cells at 4000mAh hardly changed the input but increased the flight time but 2 minutes. No issues resulted and the heating.g up issue with the battries went.

I think I have my powerplant finally :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on November 27, 2013, 08:02:32 AM
Thank you Rob - and no - at least I don't think so - not sure what an ebook is but do know a pdf.


An ebook is basically a downloadable book you can read on your pc or lappy or suppose I better mention it....Ipad/Tablet - but 9 times out of 10 they are in pdf format so chances are you may have one now :)



No don't have any of those - it is a generation thing - I am a "bookie" (I think I must have a few hundred) and I just cannot read things of any length from the computer screen, ipad or a Kindle (although I can see the advantages). I do know what an ipad is (refined version of a tablet ;)) and I also have an ipod but like the TV/CDplayer/apple TV device and humax hardly ever use them!


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 29, 2013, 10:49:43 PM
And so the building begins  ;D

Stage 1 Fin and Rudder

The images speak for themselves really but cut the parts out and they all went together nicely. The leading edge I made from 1/4 soft sheet laminated between 3/32 hard giving it a plywood effect. It's well strong.

Slotting the ribs together gave a ridged strong join and the whole assembly is tough but still light. R20 rib was not glued in place like the rest though as this is the rib I'm using for the Rudder servo as you can see in the image. The servo is a 9gm Nano and the cylinder links are a snug fit held in place by two nuts locking them down. I also dropped a spot of CA on the threads to make sure. This link or servo will never leave the tail so extra effort has been made to ensure it does not fail although the rudder isn't really critical in flight even if it does.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 29, 2013, 11:01:34 PM
The rudder went together again really well and gave a good strong frame. You can also see in the first image the holes for the servo and the lead and the slots cut in the above rib to allow access to the grub screws with the hex key.

The rudder dry fitted to the fin looks the part and its here in the stages before sanding down and took a couple of pics of the servo mounted with the control rods in place so hopefully you will see what I'm trying to do and the last image gives you a bit of reference to how big the whole thing is.

I'm loving this build  ;D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Blooper on November 30, 2013, 05:12:41 AM
i am also loving this build.  ;D

keep going.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Pit on November 30, 2013, 06:55:43 AM
Super interesting  build!  Are you keeping notes on the weight progression?

Quote
...extra effort has been made to ensure it does not fail although the rudder isn't really critical in flight even if it does.
Don't neglect  Murphy's Law: If a servo is going to fail it WILL drive over to the mechanical stop...


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on November 30, 2013, 08:24:52 AM
This build will I am sure be most entertaining and absorbing.  Crack on old chap - no pressure of course but we need a daily fix please!

Did I send you these?



Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Lindy on November 30, 2013, 11:34:51 AM
Well it looks like you're off to a great start! If the vert. stab. is any indication, then I can't wait to see the rest of it. You're going to have a stunner on your hands.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on November 30, 2013, 08:47:18 PM
Super interesting  build!  Are you keeping notes on the weight progression?

Quote
...extra effort has been made to ensure it does not fail although the rudder isn't really critical in flight even if it does.
Don't neglect  Murphy's Law: If a servo is going to fail it WILL drive over to the mechanical stop...

I can't believe I forgot about the mechanical stop with the servo's. Yea Murphy needs to do one when it comes to me flying this model haha  :D As for the weight, yes I am keeping a firm eye on it and I'm trying to reduce the weight where ever possible

This build will I am sure be most entertaining and absorbing.  Crack on old chap - no pressure of course but we need a daily fix please!

Did I send you these?



You ain't on your own Dave I also need a daily fix haha however you might see at the times I post on here I'm a bit of a late night/early hours person so the post will be here just at stupid o'clock times and no you didn't to the pics mate so thanks for those :)

Well it looks like you're off to a great start! If the vert. stab. is any indication, then I can't wait to see the rest of it. You're going to have a stunner on your hands.

Thank you my friend. It's taken me 3 odd days now on and off to get this far with the rudder but really happy with the progress. The only thing thats going to stop me is work and running out of wood and materials but fingers crossed :)

Anyway onwards and upwards as they say. Time for a few more images.......

The first image (thats provided they upload in the sequence I picked them) shows the hinge fitted at the lower of the fin. You can see where the three holes from the hinge stick out. Here I will be sliding 3 cocktail sticks and epoxying them to the back section where the hinge comes out. The next shot shows the whole fin and rudder assembly hinged together (dry) followed by the home made control horn. This is made from aluminium with holes drilled in the ends for the rods. A slot was cut in a section of measured to fit 1/4 x 1/4 balsa where it was CA glued in place then over the face of the balsa a piece of 1/16 a 1/4 ply was glued to hold it in. The whole thing was then soaked in CA glue and left to harden and then glued to the back face of the rudders leading edge as you can just see in the next shot but clearer in the one after. The rods were then connected to the servo and the control horn as you can see and it was tested...............it worked!  ;D

Really happy with the progress so far and the next stage now is to cover the fin and make the access panels for the servo etc.

More pics and stuff later  ;)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 02, 2013, 10:43:59 PM
Hi guys  :)

Got a fair few pics to put up tonight as I didn't come on here yesterday.

Progress has been good. Sheeted the fin in 1/32 sheet. I roughly cut the shape out for each side ( note the grain direction) and used CA glue to join them together over foil and no I'm not covering the model with kitchen foil before someone asks haha ;) I then glued them to the frame of the fin. I started at the trailing edge of the fin running CA down the spine and then glued it to the ribs rolling the skin down as I worked my way forward to the leading edge then finished by glueing the bottom then repeated for the other side but cut out a panel for access to the servo beforehand. Getting to the servo is now easy and enables me to make any adjustment including removing the servo if needed.

Final Image shows the completed fin and rudder prior to sanding the edges round. Very happy and oh yea and all up weight 80grams so far :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 02, 2013, 11:26:39 PM
Tailplane and Elevator

The tailplane has two spars, the rear straight and the front angled and is a one peice section that is tapered to the tips and also has a slight dihedral built into it. You can see the tabs on the spars used to keep the dihedral accurate while adding the ribs. This also eliminates warping. The ribs are cut out as complete ribs however after fitting, the six inner ribs have the rear sections cut off and the tip rib and inside but one rib have the rear sections copied. These are put too one side and used later to build up the elevators.

Next the leading edge was added along with the tip blocks and trailing edges. The trailing edge is glued to the rear of the tips and last three ribs and when dry cut flush with the tip rib and inner rib. This then becomes the trailing edge for the elevators. Once dried the whole frame was turned over and the carbon fibre rod fitted to the lower of the main spar and epoxied into place.

The sections cut from the rear of the ribs were then glued to the trailing edges and trimmed. 1/4 sheet front leading edge sections tapered were then fitted where the hinged system will go. These were then sanded to shape and lined up with the tailplane. Fitted perfectly :D I couldn't resist placing the fin and rudder on top and then visualising haha but god it looks epic!!  ;D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 02, 2013, 11:38:32 PM
The tailplane was sanded to shape and the skin for the underside made from 1/32 sheet and joined as before like the fin and applied, again rolling it down from the trailing edge to the leading edge and went on without any issues. This was then trimmed.

Thats as far as I have got so far. Next will be fitting the servo's and making the mounts for the control horns on the elevators followed by skinning the top.

Back later with the rest of the progress then its time to start the fuselage :)

Rob


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: OZPAF on December 03, 2013, 01:55:20 AM
Its looking good RRCA.
John


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 03, 2013, 10:54:23 AM
Its looking good RRCA.
John

Thanks John :)

Just for the record and for all those others that have pm'd me my name is Rob :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 05, 2013, 11:52:13 AM
Just keeping you up to date with the B-29 guys. I have not done any to her today basically because I have ran out of wood. Back at work tomorrow also but will be ordering first thing friday morning all the wood I need to start building the mammoth task that is the fuselage. Here is what I need to order to complete this part of the build:-

1/16x4x36 = 12 sheets
1/8 x4x36 = 7 sheets
1/4 x4x36 = 4 sheets
1/8 x1/8x36 = wait for it.........72 haha

I may order the wood for the wings as well but if I do then I will be pushing close to spending £100 on wood and that really is not a good idea at the moment so I will just see how the progress of the fuselage goes for now and wait a couple of week to get the wood for the wings. I still, despite designing the Fowler flap hinges, need to look and revise the plan for the wings flap system. This also is going to take some time because I need to modify the construction of the wings to fit them. Anyway I will continue to update as and when I can guys.

Also anyone interested in following the progress of the B-29 plus all my other antics I get up to please feel free to like and follow me on my Facebook page Robs Radio Controlled Aircraft :)

https://www.facebook.com/RobsRadioControlledAircraft

Rob


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 05, 2013, 03:29:11 PM
I could not wait till Friday. I have just ordered the wood for the bomber haha :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Lindy on December 05, 2013, 04:02:57 PM
Here is what I need to order to complete this part of the build:-

1/16x4x36 = 12 sheets
1/8 x4x36 = 7 sheets
1/4 x4x36 = 4 sheets
1/8 x1/8x36 = wait for it.........72 haha

Two or three bedrooms?...  ;D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 06, 2013, 02:02:45 AM
Here is what I need to order to complete this part of the build:-

1/16x4x36 = 12 sheets
1/8 x4x36 = 7 sheets
1/4 x4x36 = 4 sheets
1/8 x1/8x36 = wait for it.........72 haha

Two or three bedrooms?...  ;D

Haha I know right? :D Imaging how much if I ordered the wood for the wings as well. It would be double that! :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on December 06, 2013, 12:51:16 PM
That is a few bits of timber - and guessed you could not wait!  Where do you get your wood?  




Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 07, 2013, 01:47:04 AM
That is a few bits of timber - and guessed you could not wait!  Where do you get your wood?  




It is isn't it? :) I get it from Balsamart/Blackburn Models http://www.balsamart.co.uk/store/ They are really quick and dispatch your orders the same day. I had a confirmation email from them yesterday saying that it was dispatched and will be delivered Monday. Bit disappointed about monday as was hoping it would be here today (Saturday) so I could get straight on with the building of the fuselage but hey ho. I'm making the formers, well 90% of them, from 6mm depron to keep the weight down, a material I have an abundance of, so I will start cutting them out today so at least when the wood does arrive I can go straight into the construction.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on December 07, 2013, 09:18:17 AM
Never mind - usefully occupied in the meantime. I was just interested where you got your timber because the days are gone when you could amble into the model shop a short bike ride away and select what you wanted. We are fortunate having Slec 20 minutes away. And they seem about 10p or 15p a sheet cheaper than Balsamart - whose un-discounted prices are a bit steep?  I have found for regular customers Slec will discount as well on some orders.

I have tried to find some of the mechanical detail for the Fowler flaps without success but will keep looking.   


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Saint Alfonzo on December 07, 2013, 09:37:51 AM
Hi Rob.. Just wondering what CAD programme you use?? :)
( Great build btw and had a look at your facebook page too, some nice stuff there too)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Pit on December 07, 2013, 05:09:11 PM
There was a build on one of the YahooGroups  (http://groups.yahoo.com/neo/groups/GSWarbirds/info)back around 2003-4.  I don't recall which aircraft it was (prolly a bomber, but the builder developed a Fowler setup that worked and was documented with lots of pics and diagrams - might have created a dedicated file for the design.

Finding anything on Yahoo is a royal PITA, but it is there.

@ Saint Alfonzo:  See reply #21


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 09, 2013, 06:02:49 AM
My balsa wood has arrived :)

Gonna get some sleep as been on nights then its on with the 29's fuselage :D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 12, 2013, 12:25:54 AM
Finally after three days I'm back with the progress of the B-29 :)

Fuselage

Right here we go. Finally after a couple of days tracing and cutting out we have the construction of the fuselage under way. In order as they are here first we have laid out on the floor on top of the reference plan all the wood cut out and ready to go for the fuselage. Next procedure was to lay out on the plan the centre keel upper and lower sections, These were pinned down and CA glue was used to join all six sections, three on top three on the bottom.

I then followed on with gluing all the 22 formers in order but leaving off the front number 1 former, becasuse this cannot be glued in place until the side keel is added. Once the formers were set I then added the side keel and former number 1. This was where the first of two times I was bobbing it incase it didn't fit very well. I must of done something right because it did fit and it all lined up perfectly.

I then added the wing mount section, part two of bobbing it cause again was worried it didn't fit. Wrong again :) It droppped straight into place and lined up spot on. The slots you can see are for the wing braces. These are 3/16 ply x 2 and will slide into box sections glued to formers 7 and 8 and then held in place by two removable bolts, so the wings can be removed for transport perposes of coarse :)

Once happy all was dry and lined up, then it was onto the ridiculously boring task of addin the stringers, all 25 of them! Anyway as you can see this is where I am now. I will leave it too dry for the day and then I can remove it from the plan and review the location of the front retract bay and bomb bays. The rear bomb bay will be mainly for access to the fuselage join bolts just aft of the wing. This is held in place by four 6mm dowels passing through formers 13 and 12A, going into aluminium tubes located in formers 12 and 11 and again secured with two bolts.

So there we have it. Well chuffed and steaming along. More to come hopefully very soon :D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 13, 2013, 02:03:40 PM
Continuing on from yesterday the fuselage is coming along very nicely.

The fuselage formers on the opposite side have been lightly glue tacked into place and also 1/8 square strips added to keep everything straight. Then I added the side keel and wing root and followed on with the slow task of adding all the stringers once again. The polystyrene box with the semi circular sections cut out aided me well during this process of the build enabling me to rotate the fuselage as I worked my way around the airframe.

12 hours later and we have a fuselage, resembling what can only be described as close as I would get to a framed model of the Zepplin airship  ;D

Anyway now dry, I will cut out the upper hatch out that will give me access to the wing securing bolts and electrics then I will split the two halves apart very carefully I might add and then I will be adding a bay floor as well as making the bomb bay and front retract bay and making the neccasary adjustments to fit them plus adding the aluminium tubes and dowls where the fuselage splits for transport before glueing the two havles permenantly back together with 30 minute epoxy


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 13, 2013, 02:06:17 PM
I couldn't help but place the tailplane and fin on the aircraft and stood back. It looked well impressive......and big!

As for weight watchers, airframe as done here - 258grams. Total all up weight of all build sections together - 443grams (15.5ozs)

Anyway more to follow soon guys

Rob


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Monique on December 13, 2013, 02:19:32 PM
Very cool Rob! Nice using the Depron formers on non critical areas :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 13, 2013, 02:43:40 PM
Very cool Rob! Nice using the Depron formers on non critical areas :)

Thank you my friend. Its all adding to keeping the weight down as you will see from the figures I have just added. Also to note, when I cut the depron formers out I alternated the direction of flexibility on them, i.e. they bend less in one direction than the other, kinda like a plywood effect if you know what I mean? :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Blooper on December 13, 2013, 03:14:18 PM
going great sir.

it is going to be a beaut when finished.

say jan 1st for completion date then. ;D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 13, 2013, 03:20:37 PM
going great sir.

it is going to be a beaut when finished.

say jan 1st for completion date then. ;D

Optemist lol......but thank you anyway. A lot of it depends on the funding for it really. I still have the expensive parts to get yet like the retracts, motors, ESC's and Lipo's. That lot alone is gonna set me back around the 200 quid mark and unfortunately, build progress cannot continue until I have some of said parts as I don't really wanna do too much guess work. I can't afford to make a mistake with the build thus yet :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Monique on December 13, 2013, 03:27:09 PM
Very cool Rob! Nice using the Depron formers on non critical areas :)

Thank you my friend. Its all adding to keeping the weight down as you will see from the figures I have just added. Also to note, when I cut the depron formers out I alternated the direction of flexibility on them, i.e. they bend less in one direction than the other, kinda like a plywood effect if you know what I mean? :)

Yup, I've just discovered building with Depron, busy with a largeish Buccaneer ;) Great material once you get the hang of it. Though I'm using the grey which is apparently a bit less brittle than the white.

I wanted to ask: Are you going to be planking the fus between the stringers?


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 13, 2013, 03:52:15 PM

I wanted to ask: Are you going to be planking the fus between the stringers?


Their are some sections on the fuselage that I will be planking in between for strengthening purposes, like where the wing root is and the retract and bomb bay areas but 98% of the airframe is goin to be skinned on the outside with 1/16 sheet


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on December 13, 2013, 05:31:12 PM
Rob, your progress is phenomenal. And your workmanship top hole! And for me, still living in the dark age, educational.

I must watch this topic regularly so as to be able to book the coach in good time and not miss the maiden flight!! ;)

Oh,  word of warning - do be careful working in the bomb bay. On the "real thing" when on the ground they were left open and had a habit of self closing without warning. Could have been somewhat irritating if one was standing inside. So ground crews took to wedging a baulk of timber in place to prevent this!


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Lindy on December 13, 2013, 11:13:25 PM
Whew! You're really coming along on this project. I've never worked with Depron, how different is it to work with than balsa, and what glue are you using on it?


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 14, 2013, 09:41:14 AM
Thank you for continuing to follow my progress guys. Its really good to have you all on board with me.

Dave I have heard of that bomb bay problem so I will leae puting the doors on till last for you haha :D

Lindy depron is great to use. Its really light and strong material. The white depron is more brittle than the grey depron as the grey is softer but white I have always used. It can be flexed less in one direction, cuts really easy and can be sanded. You may note that I have however only used it in none critical areas purely because I do not trust it enough to support wing bracings etc so balsa has still been used in these areas. As for glue, I have found that if I apply contact adhesive like cynoacrylate to the surface it drys quick enough wihout desolin the material however if applied to a cut surface it will melt it rather quick so in these areas I use normal white wood glue as it bonds really well with any desolving.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Pit on December 16, 2013, 02:58:35 PM
You can use accelerator for the CA joints.  Thick or medium viscosity CA has proven to be better on Depron than the thin variety.  Of course, if you can get your hands on foam-safe CA (Pacer/ZAP or Satellite City "HOT STUFF").



Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 17, 2013, 05:15:43 AM
Hot glue guns are also really good yo use on demon or abyss foam to be fair. It dries quick and has no dissolving issues at all.

I have progressed somewhat on the B-29 but have not had chance to upload images. As I am at work at the moment Wednesday is going to be the probable time for this so by then should have many more images for you all to see :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Monique on December 17, 2013, 06:58:29 AM
UHU Por is really good to use too.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 19, 2013, 02:29:47 AM
So here we are again finally with an update on the B-29  :)

After successfully seperating the two fuselage halves, with no twisting of either thankfully, I was able to divide the front and rear sections also without issue, I was able to drill and add the aluminium tubes and dowels for joining the two sections after transporting. The alloy tubes were located in the forward section with ply reinforcing and the two front fuselage halves glued thoroughly back together and then the upper decking was added where the electrics will be placed once all was dry. The dowls were then added and again reinforced to the rear section and again the rear fuselage sections glued back together. Once dry I test fitted the front and rear sections to make sure all lined up perfectly and they did :D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 19, 2013, 02:52:07 AM
Next a horizontal plywood bracket was made for each side of the two halves with spacers fitted and these were drilled with a 6mm dia hole for the wing bolt being used to pull the two sections together. The steel bolt you see is just temporary until I can get hold of a proper plastic bolt. As you can see from the following shot all goes toether well.

Next it was time to fit the bomb bays, so I seperated the two sections and turned the fuselage over. A very basic box was added to the front bay more to keep it strong in that area really although it will still look good once finished and still have operating doors. Likewise for the rear bay, however this was slightly modified as it is going to be the area I use to allow access to the rear fuselage joining bolts. Constuction was the same apart from the large section cut away for the access. Another floor panel was then made and added over the top held in place by four small self tappers in each corner. The tiny holes were drilled for these screws and then I added CA glue to each to harden the wood and stop it splitting. Again as you can see from the picture it looks fine.

Then it was time to add the front wheel bay. Now, you may recall I was having issues regarding the front wheel alignment because the oleo on a 29's front leg is forward of 90 degrees. Keeping it scale, I was having issues with the wheel retracting in the full size tacky mock up I made. Positioning the retract unit at an angle to compensate for this meant when the wheels retracted, they hung low out the fuselage so this meant the bay doors would not shut. You will see what I mean in the last two images here.............after studying closer at image of the full size bomber, an 'Oh my god'!! moment errupted


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 19, 2013, 03:17:22 AM
Following on, I noticed that the front oleo strut just above the top of the wheels, was kinked rearward where the suspension knuckle is! Well this changed everything! I modified my excellent mock up wheel strut, basically snapped it where the knuckle was and bent it back to the required angle and look what happened..... it retracted fully into the bay! :D Happy Rob was an understatement :)

Anyway with that all sorted, the front retract bay was contructed, firstly from 1/16 balsa to make the templates, then when happy it all went together properly, these were duplicated in 1/8 ply to make a box section. The very front was cut away to allow fitting the box but slots were cut into the first to third formers mid way down and a 1/8 ply base was epoxied into place for the retract bay to be glued too, A ply front wall for former number one was also added to give strength to this area and once glued and postioned and lined up, it was heavily epoxied in place.

I have now been thoroughly sanding the whole fuselage and I am about ready to start skinning her.

And thats it for now guys. Hope you are all enjoying this build as much as I am. I fear it is ripping along rather rapidly. At this rate I will soon be thinking about what other large model aircraft I can build.......Tiny hint.....in the pipeline an Avro Shackleton ;)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Blooper on December 19, 2013, 04:27:54 AM
what like this (http://i5.photobucket.com/albums/y185/MUDDYJLX/nats%202013/DSCF9092_zps18bac520.jpg)

newark air museum.
i took quite a few pics as it is a model i wanted to build at some point.(if i ever get all the other builds finished)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 19, 2013, 06:22:05 AM
That's the girl :) but I'm thinking the later mark with a tail dragger but is only in the pipeline like I say. I have others I'm interested in building. Lockheed Constellation, Bristol Brabazon and DC-6 to name a few.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Penflex on December 19, 2013, 06:53:36 AM
a tease to help you decide

Avro Shackleton MK III free flight model


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 19, 2013, 01:23:40 PM
Looking good. Will be nice to see it when its done. I could never build a model like that free flight. I would be worried it flew off never to be seen again lol


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 27, 2013, 11:05:13 PM
Finally with the festive period well and truly scrapped, the more serious subject of updating the progress of the B-29 Superfortress can now continue. I hope you all had a great Christmas all the same :)

Now then, since my last update, a rather large chunk of the bomber has been done, in my standards anyway. You will recall on my final chapter before the festiities arrived I was about to sand the front section of the fuselage ready for skinning. This has now been done and I decided to plank the structure diagonally using 1/16 sheet balsa strips 1/2 inch wide. This has proven to be successful, albeit a rather long process.

The six images below show the process from start to finish before trimming. The more difficult areas were around the wing root section of the fuselage. For this area I planked upto the root and cut the strip at 90 degrees where it met the root, leaving me small elongated triangular sections to fill after. Because the surrounding areas of he root between stringers was filled with 1/8 sheet, this gave me a solid surface to CA the triangular sections too once cut to size.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 27, 2013, 11:31:22 PM
This set of six images show the fuselage sections bolted back together. Some of the triangular sections still need to be added and the planking trimmed. This bolting back together process was merely a test to check planking the front section had not bent or twisted the framework and as you can see it is all still good. One slight alteration or modification I did however make was were the two sections join, I noticed a small amount of movement vertically was present. So I decided to drill two 4mm holes opposite one another at the top and the bottom of the formers that butt up together. I then cut out four 1 inch square 1/8 ply sections and also drilled these with a 4mm hole through the middle. I then Epoxied a 3M nut over the hole on two of the ply squares and again epoxied these to the inner areas over the holes on the rear sections former passing a 3M bolt through the hole to keep it all lined up. I then repeated the process on the other two 1 inch ply squares, this time with a 3M 1 inch diameter washer. These were then epoxied to the inner sections over the holes on the former on the front section of the fueslage, again using a 3M bolt to keep it all lined up. Once the epoxy set, I slid the two sections back together and bolted it all up. As well as the 6mm bolt in the middle, the two new 3mm bolts now made everything strong and movement free. Slight cutting away of the inner sections of two of the formers in the front fuselage section was needed to allow me access to the new bolts but has not altered the strength of the model so all is good.

Once again I added the tailplane and fin to the rear section dry, just to stand back and look at the progress of this monster model. The last image you can just see the 1 inch diameter washer and 3mm screw bolt head, just below and left of the main centre 6mm bolt.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 27, 2013, 11:56:57 PM
The first image you can see the ply plate that travels from the front former back through the second and third formers that the front retract bay is epoxied too underneath. This ply floor will also make for good Lipo battery positioning incase I need to shift the CG forward more after set up.

The following images are of the building of the rear bomb bay doors. These were made by using the inner walls of the bay area to get the correct curve for the doors. Four curved sections were made and a sheet of 1/16 x 4 was cut too length and scored all the way down 1/4 inch apart. This allowed me to acheive a curve in the sheet. I then glued the four sections to the sheet and allowed it to dry. I then marked the centre point of the hatch and carefully cut it down the middle seperating the two doors. This was then followed by trimming back the curved sections to give me a better looking less drag free door when open in flight. Test fitting to the bomber was then carried out and at was great, although one door did need a little steam and a twist to remove a peskie warp but it all lined up good. Don't be, like I was, put off by the seemingly totally out of line bomb bay doors in the image where they are shut. It is what I think they call an optical illusion because the direction I have planked the fuselage. Trust me, I measured, lined up, angle checked, god knows how many times before I was convinced haha :D

Anyway thats it for now guys. For all you weight watchers out there, total all up weight of everything constructed so far......... 455grams (16.0ozs)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Lindy on December 28, 2013, 07:46:07 AM
Amazing progress... I like the spiral planking, but it leaves me thinking that it would be "bugger all" to ever have to repair :o


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 29, 2013, 05:20:57 AM
Its a really strong method of skinning and what repairs? If this crashes I don't think repairs will come into it Haha anyway hopefully we won't need any repairs


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Lindy on December 29, 2013, 12:40:01 PM
Well I was thinking of my style of flying... Repair is a necessary skill ;D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on December 29, 2013, 07:45:46 PM
Hey we all crash at some point. How regular we do it depends on how regular we fly I guess. I have at least one or two right offs a year easily, my Skyraider being the last one to bite the dust. Got a little too confident rolling low level shall we say and and a momentary lapse of reason made me pull up elevator while inverted........bang! :/


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on January 09, 2014, 03:20:57 PM
Ok I think you have all waited long enough for it and now I have sorted the plans for it I might as well let you in on it :)

I'm keeping to the theme of the Fortress's shall we say. This time I am going bigger still with a B-52G Stratofortress.

(http://www.wingsovereurope.com/postwar%20military%20aircrafts%20gallery_1/B-52%20Stratofortress%20%284%29.jpg)

This monster will have an approx wingspan of 180" (15ft) and be powered by 8 x 12 Blade High-Performance 90mm EDF Ducted Fan Units. Carbon fiber reinforced Nylon rotor with shaft adaptor to motor in either 5mm or 8mm. Revs max 45000rpm and powered by 8 x Warhead 3545-1350KV EDF Motors and 8 x 80Amp ESC's run off 4 x 6C 22.6V Lipos.

Construction from mainly foam and balsa/ply. Scale fully working Fowler flaps and fully working twist and rotating retracts, bomb doors and nav lights. Big old project but gonna be awesome, but like I have said on the other forums for this build, it's not going to interfere with the build of the 29 I'm doing at this time. I will be completing the construction of the B-29's airframe minimum first before I start the Buff, but because the B-29 was powering along so quick, even quicker now I've decided to cut the wings from polyfoam, I needed to start thinking what to do next as a build project, but wanted something mightily impressive in size even compared to the Superfortress. It was a tough choice as I had many options to go with from aircraft such as the Shackleton, Super Connie, DC-6, Tu95 Bear and even another Lancaster. Then someone mentioned to me, 'Why a prop job, why not a jet?' It was a valid point, so the choices expanded. Whatever it was I was going to build it was going to be 15ft in span and the choices then became the B-52, the Vulcan, a Victor or an XB-70. It was a fight between the Buff and the Vulcan and the Buff won, however, if the build and subsequent flight of the B-52 is successful with the method of construction I am using, then a Vulcan will not be far behind, that I will promise  8)



Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Lindy on January 09, 2014, 03:45:58 PM
Whoa!... Now all you need is Maj. Kong! ;D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on January 09, 2014, 03:57:12 PM
Whoa!... Now all you need is Maj. Kong! ;D

Hehe  ;D Tell me about it!

I've decided that I want some big birds in my home (and I'm referring to model aircraft before anyone quotes me on that comment ;) ) so the next four builds are all gonna be big my friend  :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Lindy on January 09, 2014, 07:53:47 PM
Did you give any consideration to the B-1-B Lancer a.k.a. "Bone"? Variable geometry wing and Fowler flaps. OTOH the LG on the 52 along with the flaps will prove a challenge. Are you renting hanger space at the airport? I live on 40 acres and don't know if I'd have room :D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on January 09, 2014, 10:32:26 PM
I live on my own so storage isn't an issue. If I wanna hang the Buff from the ceiling of my frontroom I will :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on January 10, 2014, 01:26:39 PM
Oh for a Brabazon,  I can't ever recall a model of one. :-\


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: applehoney on January 10, 2014, 02:44:57 PM
Only control line,  in England waaaay back


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RolandD6 on January 10, 2014, 03:45:21 PM
Oh for a Brabazon,  I can't ever recall a model of one. :-\

A Brabazon was featured in a very early issue of Flying Scale Models. It was powered by electric motors, had contra props (I think) and the motors were supported by carbon fibre space frames. That is a about all that can remember about the model. I am fairly certain that David Boddington was the editor.

I kept those early issues for a long time (beginning with the very first) but space is at a premium around here so they eventually had to be given away.

Paul


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: OZPAF on January 10, 2014, 04:05:46 PM
I think the model was built by Dave Chinery and was quite large.I remeber teh carbon space frame motor mounts and it did have contra rotating props.
Dave has made a series of large scale RC electric models.
John


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RolandD6 on January 10, 2014, 04:10:00 PM
Wrong. I still have that issue of Flying Scale Models. November/December 1999.

The props are not contra-rotating,. The builder was John Menhennett. There must have been another electric powered Brabazon featured somewhere because this model is powered by four 4-stroke Laser engines.

Later today I will scan and post the magazine cover, unless someone else does it first.

Paul

John got in first with more accurate info about the electric Brabazon while I was typing this.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RolandD6 on January 11, 2014, 01:30:08 AM
Here is a scan of the Flying Scale Models magazine cover.

The scan was done with a cheap Epson XP-100 all-in-one. The colours have been reproduced reasonably well except for the round sticker over "November/December".
The actual colour of that sticker is fluoro orange/red which clearly is beyond the gamut of the scanners colour space.

Paul


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on January 11, 2014, 07:56:09 AM
Thank you Chaps - is that not a really nice aeroplane? I remember seeing it once or twice - so elegant in the air!

Just the kind of model for Monique............... what say you all?   


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Starduster on January 11, 2014, 08:54:05 AM
Wow. A XB-70 (my favorite airplane of all time) with a 15ft wingspan would give you a length of 28ft.

That would be pretty impressive!


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on January 11, 2014, 11:44:32 PM
Wow I disappear a few and my thread goes awol!! Haha :D
A Brabazon was one of the prop jobs I considered but the contra props put me off, the length of the XB-70 put me off that. As for the complexity of the B-52 landing gear its actually very simple and I'm not going to lie I've already tried it with two main twist and turn units. I'm now trying to sort the steering, that's the hard part, their are no main twist and turn units on the market with all wheel steering for aircraft this size or weight of around 30lbs


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Pit on January 12, 2014, 11:24:34 AM
Thank you Chaps - is that not a really nice aeroplane? I remember seeing it once or twice - so elegant in the air!

Just the kind of model for Monique............... what say you all?  
She's already got a Shackleton in the works...

Re: B-52 "BUFF"...
8 x 90mm fans... I hope you're NOT considering anything from HK!  They work well but there is only one EDF that I'd consider anywhere adequate for what you have in mind, that would give you a chance to heft that beast with enough reserve.  They are defnitely NOT inexpensive, but are light years ahead of anything else in weight and power/efficiency - especially when used with the suggested motors.

http://www.schuebeler-jets.de/en/

You're looking more towards 55+ lbs of airplane with all those "extras".


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on January 31, 2014, 09:26:01 AM
Quick update guys. Unfortunately the B-29 build has had to come to a halt because I am now out of work sadly, however the plans for the B-52 have been completed and the start of this bomber and the new thread for it will commence once the B-29 has been completed  :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on January 31, 2014, 01:42:39 PM
Oh dear, sorry to hear that and hope you will get things sorted soon.  Just be careful that you do not (as I did) get smitten with the idea of not having to go to work every day.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Bulldogger on January 31, 2014, 03:43:51 PM
Condolences and best of luck at finding a new position quickly.  Always an anxious state to be in.
alex


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on February 02, 2014, 03:46:36 PM
Thank you both


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Saint Alfonzo on February 03, 2014, 03:33:28 AM
I'm in the same boat, no job, I but I'm at that age where the job centre says I have to look, but I'm actually not going to look very hard! The downside is of course, less wonga.. the upside is.. more time for balsa bashing.. Every cloud has a silver lining etc etc..
If you're looking then I wish you good luck..:)   ::)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on February 03, 2014, 05:27:51 AM
Yes - I think I know how you feel - I succumbed to being "free" for a couple of years! A rehearsal for retirement.  Must say I found the people at the job centre very entertaining - in a perverse way! The lack of perception and the inability to deal with people who might be distressed was incredible.  I went of a course (as then one had to) and they discovered I knew more than the person taking the course because at one of the "breaks" I was asked if I would take over :( :o ??? :-[ :'(

So when things get a bit glum maybe you will have similar experiences that will make you laugh! Or cry?  Perhaps I was at a slight advantage as my unemployment was to a degree voluntary.

Chins up both - things are on an upturn the papers say - and they are always truthful. 


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on February 03, 2014, 10:27:28 AM
Unless it comes from the Sun the Mirror or the Daily Star lol

Anyway, I have been thinking. I wonder what the outcome would be if I could produce a simple but quick easy to put together kit or a model aircraft cut from foam and sheeted in balsa (30 second pause there while I watch 3 Apache Gunships fly over my home) I would only need the templates for one and then just cut away :/


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: OZPAF on February 03, 2014, 06:08:59 PM
Good luck - hope you are able to finish off the B 29 soon.
Another forced retiree
John


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on February 03, 2014, 06:30:19 PM
Good luck - hope you are able to finish off the B 29 soon.
Another forced retiree
John

Trust me John the 29 will be finished. Like all aircraft whether model or full size restorations, they all need an influx of money to keep them alie and they always come through......so will this and my B-52 that will follow :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on February 04, 2014, 05:52:45 AM
30 second pause there while I watch 3 Apache Gunships fly over my home)

Ahhhh .... that is where they went? Did not see them properly - could well have been from Wattisham perhaps which is only a few minutes flying time - or maybe Lakenheath also not far?

So are you looking at kit production then? I do get the impression that cottage industries in our "hobby" do reasonably well. And of course the "net" helps immensely.  There is a heavy market for ATRFs etc. and good quality ones should appeal to the chap (or chappess) who perseveres beyond his first model.

Nought to lose I suppose?  Haver fun then?


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on February 18, 2014, 08:44:56 PM
 I have an interview in the morning and if all goes well the B-29 will be steaming back into action within the next two weeks as well as somethin else.....something else not Boeing so its not the Buff, although she is still being built after the 29 is completed  :)

So keep everything crossed guys and hopefully tomorrow I will have good news  ;)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Bulldogger on February 19, 2014, 08:30:19 AM
Best of luck!


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on February 23, 2014, 05:34:40 AM
Its good news week.....I now am back in work and the B-29 will be continuing shortly  ;D


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: soarbird on February 23, 2014, 05:51:18 AM
That is great news indeed.

Will be following closely.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: carpetbagger on February 23, 2014, 06:55:57 AM
YES! Happy for you, and waiting for a pic update on your gorgeous big lady . . .


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on February 23, 2014, 09:53:53 AM
Thank you guys :)

As an announcment to this news a long time has been taken to deciding the actual aircraft I will be modelling and can now tell you that I am going to be doing Boeing B-29 Superfortress 'Atomic Tom'
USAAF 19th BG, 30th BS, Kadena AFB, Japan, June 1950



Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on February 24, 2014, 04:42:55 AM
As those of you following this thread may recall, I had an issue with the fuselage nose section being twisted slightly making the nose out of line by about 3/8 inch. The strength of the construction as it is means I cannot twist it back so I have no alternative but to cut the nose off right behind the third former. I will then make a duplicate #3 former and plug it into the other section of the fuselage with epoxy and then mix up some 5 minute epoxy and glue the nose back on in line with the rest of the fuselage. I'm then gonna cut away the outer skin an inch from the join on both sides and put 1/8 balsa infills between each and every other gap in the stringers and again on the other side of the join do the same but in the opposite position of the first side so when its all done it will look kinda like a checker board......following me so far? lol :D

Then when this is all sanded and flush I'm going to make a 2 inch wide cross grain balsa band and epoxy it into place wrapping it around where I cut the skin away and then sanding it all flush once dry. Hopefully it will be strong enough to withstand the impact of landings without the nose breaking off every time I land but we will see :)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Pit on February 24, 2014, 09:08:15 AM
A twist is really not nice unless it's the bakery kind ;D!  I would, however, NOT recommend 5 minute epoxy for the re-graft of the nose, or for any other use except (temporary) pre-tacking of parts.  By the time you've applied the gunk all the way around the former, it'll have almost cured where you started.

Even 15 minute hardener is questionable where structural integrity is involved.  Go with a good 30 minute resin/hardener (Pacer or West Systems) - the bit of extra time involved is worth the MUCH greater strength.  A couple or three toothpick pins will also help getting a secure graft.

Pete B.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: DavidJP on February 27, 2014, 08:23:21 AM
Just caught up with this - well done with the employment.  Atomic Tom ? What a good choice!  I am now getting. Little impatient so you have had enough time off and suggest you get back to work! (Please).


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on March 02, 2014, 05:07:55 AM
Thnks for the advice Pete and duely noted :)

David your really piling on the pressure now aren't you? :D As with most jobs a week in hand or as in my case a month, needs to be done first but rest assured my first pay packet WILL include items required to complete the 29, also if funds allow it a new kit will be added to the stable ready for the spring warm weather for test flying along with the P-47, MX-2 and hopefully Spitfire dust offs :)

Patience my friend all in good time ;)


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: OZPAF on March 06, 2014, 07:12:36 PM
Good luck with the new job.
John


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on March 21, 2014, 01:17:22 PM
Ok so the B-29 build is back under way after a period of time out due to lack of employment. As stated earlier the servo's Y leads and extension leads have finally arrived after a three month wait from the joke that is Hobbyking which means now I can start the process of attaching the tail surfaces and plugging in the servos and leads.


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: RRCA on March 29, 2014, 12:03:56 PM
So here we go again  :D

Although not a lot has been done due to working I thought I would continue on with the progress reports all the same. I have been working mainly on the tail of the bomber and now I have got the leads and servo's I needed have now epoxied the tailplane and fin into place

The tail gunner section has also been built up and is now ready to have the windows cut out. The small peach thing at the back on top isn't a biscuit but the plug I am making for the gun turrets :) Everything all lines up perfectly now too


Title: Re: New Project-Big is beautiful B-29 Superfortress
Post by: Alastair on May 09, 2014, 10:47:00 AM
Nice work RRCA, looking forward to the next update!