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Outdoor Free Flight Forum => Free Flight Scale => Topic started by: ZK-AUD on November 30, 2016, 01:39:53 PM



Title: Avetek Pilatus PC9
Post by: ZK-AUD on November 30, 2016, 01:39:53 PM
One of the kits that Avetek took over from the old Airsail business was a rubber powered Pilatus PC9.  It's actually a much bigger model than it's 21' span would imply, the full size PC9 having a relatively short span.  As a scale subject the PC9 has a lot going for it, including some wicked full size colour schemes.  The Airsail kit was die crushed and had a lot more wood in it than necessary.  I'm currently working with Gwyn to revise the kit for re-issue in laser cut form.  My main concern is to get the wing loading down.    My prototype fuselage is currently sitting at 6g - so far so good


Title: Re: Avetek Pilatus PC9
Post by: strat-o on November 30, 2016, 03:07:40 PM
Beautiful.  Pretty sharp curve behind the cockpit.  How will you cover that?  Yikes!


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on November 30, 2016, 03:26:25 PM
There is another sub stringer to go outboard of the sharply radiused one which will help, but it will cover just fine - watch this space!


Title: Re: Avetek Pilatus PC9
Post by: DavidJP on November 30, 2016, 03:43:49 PM
6g?....  I would get your scales checked if I were you.  Or have you got some of this helium impregnated balsa?

Seriously though I like the construction and it does indeed look very neat and I can well believe that weight. 

Very envious of your stamina as I have not yet even taken the Tiger Moth out the packet (don't tell Ricky).


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on November 30, 2016, 03:47:42 PM
Did want to have to do this! ;D


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 01, 2016, 03:52:16 AM
Here she is with the final stringers in and with nose and canopy trial fitted and mocked up - why don't we see more of these - they're a very sexy beast.


Title: Re: Avetek Pilatus PC9
Post by: billdennis747 on December 01, 2016, 04:39:02 AM
Looks good Mike. Which way does it go?


Title: Re: Avetek Pilatus PC9
Post by: Pit on December 01, 2016, 08:34:03 AM
I have an AIRSAIL version in the bones state (has been that way for the past four years or so... ::) and sat around for ten years prior).  Parts were machine cut so it must have been one of the last runs.  I'm not sure what my fuselage weighed at the 'unfilled' stage, but it weighs 11.2g as shown.  Are you going to use the plastic cowl or carve a wood one (the plastic one DOES fit rather nicely)?

I probably won't get back to it till the end of the month, but I'll definitely be following your build!


Title: Re: Avetek Pilatus PC9
Post by: ffscale on December 01, 2016, 10:14:41 AM
Nice looking Model Mike and I’m impressed with the weight. 

I’ve built the Turbo Porter (a fine flyer) and have the Airtrainer and Tomahawk kits in the stash.  Nice designs, if in need of a bit of lightening.  The large canopies in both kits are particularly fine mouldings, though therein lies a story.  I bought the Airtrainer via Ebay and the chap I bought it from thought wrapping the box in brown paper would allow it to survive the delivery process.  Needless to say, the canopy was squashed flat when the rather mangled box arrived.  So, I wrote a note to Airsail and asked if I could buy a new canopy from them.  A few days later they sent me one free of charge and beautifully packed.  Fantastic customer service – what a splendid gesture.   

I would think laser cut, lightened versions of the Airsail kits would be popular.

Mike S


Title: Re: Avetek Pilatus PC9
Post by: DavidJP on December 01, 2016, 10:29:04 AM
Yes OK Mike but you have carefully excluded the whole framework in the picture which is no doubt supported out of shot! :D ;)

Pete I am encouraged by your framework at 11g. because I am plodding through a Mike Midkife Alby DIII and have sheeted the fuselage (because I felt like it) and that is presently 8.7g with nose block (sans 'ook).

But very neat builds both of you. Look forward to more progress.

 


Title: Re: Avetek Pilatus PC9
Post by: strat-o on December 01, 2016, 11:53:04 AM
I like how you treated the tail.  Did you make that out of two blocks that were hollowed out?


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 01, 2016, 03:20:49 PM
Yes Strat O the tail cone is exactly as you describe. I used my deadest block and hollowed it out to nothing. The original Airsail design has stringers going right back but I think this is a lot more convincing.   Pit and Mike S. I wonder what the carbon footprint is of the balsa in these kits that goes from Ecuador to NZ then back to Europe possibly via the US!!


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 01, 2016, 03:26:17 PM
Pit  In answer to your question I was planning a carved nose but last night Gwyn and I moulded one in much lighter ABS than the old Airsail product and it's so nice I will use it. Having said that I have a cunning plan to incorporate the plastic nose in a decent structure that will allow a blast tube and proper thrust adjustments. Pit I have previously had success in retro gutting fuselages like your Airsail PC9. I use piece of 10mm dowel about 30mm long with sandpaper glued to it and this glued to the side of a length of 6mm square spruce so that it is offset. A careful 30 minutes of happy time will see all your formers nicely Jenny Craig'ed!!


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 02, 2016, 04:14:00 AM
Meant to post this earlier which shows the carved and hollowed block tail cone to advantage


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 06, 2016, 03:43:08 AM
A little more progress to report.  Pit's suggestion to put some infill around the nose is a good one so I've started on that.  I'll also do the bottom section of the next bay back and underneath to reinforce the front undercarriage leg area.

The undercarriage leg has 2 torsion loops and goes down through the lower keel.  On the Airsail design it is actually shown descending to one side of the keel - I have cut the keel away and put a scab of 0.8mm ply on either side, making a nice strong box for it to rotate backwards in.

This and the nose sheeting are the only slightly time consuming bits - wings and tail feathers will go together very quickly


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 10, 2016, 06:06:51 AM
More progress today - I decided to use the plastic nose supplied with the Avetek kit but with a cunning plan of my own to allow a proper nose block insert and the passage of a decent size blast tube.  The 1/16 balsa tube is a perfect fit between the back of the plastic moulding and the firewall former.  I also managed to cut a tiny rebate in the nose former so that the plastic moulding slips over it and is flush with the sheeting rather than raised.  It's just sitting there in the picture but it closes up properly and there will be no gap at all when glued - very light nose assembly

Next up is the torsion sprung nose gear - you can work it out from the photo

Finally more cunning in the back end.  Rear peg and mounts in place, and top tailcone fairing - crrved and hollowed out - very light


Title: Re: Avetek Pilatus PC9
Post by: DavidJP on December 10, 2016, 08:39:59 AM
Masterly!  And useful thank you. I notice to you have scalloped the formers between the stringers which is a nice touch.

Have often been in debates about whether to simply attach the stringers to,the formers or put them slots but always felt the latter is   the best way, with the scallops.


Title: Re: Avetek Pilatus PC9
Post by: MKelly on December 10, 2016, 08:57:59 AM
Beautiful woodwork!  I particularly like the way you faired the plastic cowl smoothly into the sheeting - I've never been happy with integration of plastic parts on my models.  The way you've done it should make it look really seamless.

Mike


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 11, 2016, 04:14:50 AM
Well, this is as far as I got this weekend even with She-Who-Must-Be Obeyed away in Australia for the weekend.  The nose is now glued on and sanded fair, and the wing centre section built.  The nose former has a piece of 0.5mm ply doubler a couple of pieces of firm1/8 x 1/16 glued on edge vertically either side of the balsa tube help protect against shock loads!  Weight still looks OK. As you see it there with the nose unit, front U/C, canopy and aluminium rear peg in, she's sitting on 15 grams


Title: Re: Avetek Pilatus PC9
Post by: danmellor on December 11, 2016, 04:23:39 AM
Lovely!!

Dan.


Title: Re: Avetek Pilatus PC9
Post by: DavidJP on December 11, 2016, 09:49:07 AM
Careful - you are going on my Alby! 

Have you considered tissue over Mylar? A chum of mine says it is alledgedly lighter than tissue because you need fewer coates of dope.  Bit difficult to be sure I would think because you would  need to have two identical structures etc.


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 13, 2016, 04:28:58 AM
Wings now built and rough sanded - main U/C Nose block prop and tail unit to go.  Kitchen scales say 19g, Reloading scales say 18.79g so that tallies.  3.5g of that is that huge canopy - I'll try moulding a thinner one - 3.5g is a lot on a model this size - half a peanut just in the canopy!  Finished weight should be around 50g - if we said another 20g for covering tail group and nose assembly and up to 10g for paint and finishing.  Hopefully under that but it will fly OK at 50g


Title: Re: Avetek Pilatus PC9
Post by: billdennis747 on December 13, 2016, 04:54:11 AM
3.5g is a lot on a model this size - half a peanut just in the canopy! 
Not one of my Peanuts.


Title: Re: Avetek Pilatus PC9
Post by: Pit on December 13, 2016, 09:17:34 AM
Just curious, but did you make the landing gear removable?


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 13, 2016, 11:59:20 AM
The short answer is no, the front gear is fixed and so the main gear will also be.  Over here our scale flying is aligned to the British style, with more emphasis on scale fidelity and realism of flight than on duration.  ROGs are therefore encouraged.  I also decided that as this was for the purposes of tweaking the kit I would build it as intended generally.

I have however made some small changes such as lightening the gauge of wire used and thinning the wheels to a more scale thickness than those originally provided by Airsail and moulding them in much lighter plastic.

Granted it would still go a lot better without the appendages!


Title: Re: Avetek Pilatus PC9
Post by: DavidJP on December 13, 2016, 03:44:27 PM
Granted it would still go a lot better without the appendages!

Don't know - I remember being told way back with a Hurricane that the wheels should be fitted as the low slung weight would give a bit of stability -- which it did but was still pretty crazy in flight. That was in the days when dihedral was considered essential.


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 13, 2016, 03:48:16 PM
You could be right - a bit of pendulum might be helpful to balance that big heavy canopy up top!


Title: Re: Avetek Pilatus PC9
Post by: Pit on December 13, 2016, 07:10:47 PM
I plan to set up my gear as plug-in.  More for display reasons, but if the pup flies reasonably well outdoors - and is not TOO heavy, then I'll try it indoors with gear.


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 15, 2016, 12:48:11 AM
Today's progress is the tailplane and elevator.  Fin and rudder currently on the board so we're nearly there.  The original Airsail construction was 1/4 x 1/16 outlines - This adds no real strength but 3 times the weight.  I've re-engineered it to use no more wood,  but constructed it in 3/32 x 16 which has allowed a 3/32 deep spar at the high point and a nod towards a scale section.  I also have an allowance for the extra spar to create a separate elevator which will aid trimming as will he separate rudder currently on the board   Weight as you see it here is sitting at 20g.  Sorry to harp on about the weight thing but the exercise here was to lower the wing loading (it doesn't have a whole lot of wing).


Title: Re: Avetek Pilatus PC9
Post by: Don McLellan on December 15, 2016, 02:12:28 AM
Beautiful work Mike.  Exceptionally interesting model.

Don


Title: Re: Avetek Pilatus PC9
Post by: Tommy Wee on December 15, 2016, 04:26:35 AM
Excellent work. Nice proportions for a flying scale rubber model, rubber around centered on C of G.

Tommy


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 15, 2016, 05:43:45 AM
Thanks team - here's the final update for tonight.  Fin and rudder off the board fettled and rough sanded - not yet profiled.  That's one nice looking aeroplane.  I plan to finish it as a Beechcraft T6C Texan in RNZAF Black Falcon colours


Title: Re: Avetek Pilatus PC9
Post by: tom arnold on December 15, 2016, 10:16:14 AM
The hinges look very interesting. What are they made of and how do they work?


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 15, 2016, 12:07:16 PM
Sorry to disappoint Tom - the 'hinges' are in fact just strips of masking tape holding it together for the mock-up photos!  The actual hinges will be fuse wire.  For what it's worth my practice is to drill holes (a firm fit) for the wire.  I cyano the wire into one surface before covering.  I then push the control surface into the other mating surface and run a bead of RC56 canopy glue down the join.  This holds the 2 surfaces together while at the same time being a flexible glue allowing easy adjustment


Title: Re: Avetek Pilatus PC9
Post by: tom arnold on December 15, 2016, 07:35:02 PM
The addition of the RC-56 is pure genius. Can you get away with doing just a couple of spots of glue over the wire or does it need a long line? I'm working on a stab right now and can't wait to try it. Many thanks!


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 15, 2016, 07:47:14 PM
Happy to be able to contribute something!.  Tom I have always run the bead right along for maximum adhesion.  Being RC56 it has several great properties.  First it wicks into the groove between the surfaces sucks right along the join.  Second it dries clear and third, it dries light when all the water content evaporates


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 16, 2016, 11:05:10 PM
Latest progress with the undercarriage installed and a prop / spinner and hook assembly mocked up.  Pretty happy with the weight - as you see it here it's 28g and fairly nose heavy.  I haven't worked the prop yet but will take a couple of grams out there at least.  Also may be able to take another couple of grams out of the canopy if I form another one in lighter plastic.

If covering and colour were to add even 20g we're still under 50 but I'm picking we'll be closer to 40g.  Very happy!


Title: Re: Avetek Pilatus PC9
Post by: Andrew Darby on December 17, 2016, 02:36:49 AM
That's a very handsome looking model.  Very nice indeed.

Andrew


Title: Re: Avetek Pilatus PC9
Post by: Work In Progress on December 17, 2016, 01:14:58 PM
Very pretty indeed. Will this and the rest of the small Airsail kits be going into production again? I have a Tomahawk and the Auster kits (though I seem to have mislaid the plan for the Auster somewhere) and would be very happy to complete the collection.


Title: Re: Avetek Pilatus PC9
Post by: DHnut on December 17, 2016, 01:42:05 PM
These kit are still available from Avetek directly and are now being improved over a period of time as you see from Mikes efforts.
Ricky


Title: Re: Avetek Pilatus PC9
Post by: Avalanche on December 17, 2016, 02:00:32 PM
Work in Progress - if you email me a postal address, I will be happy to send you a plan - aveteknz@gmail.com

regards, Gwyn


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 18, 2016, 03:51:16 AM
Apparently this thread has already inspired one of our brethren in Florida to order an Avetek PC9 - fantastic news.  Gwyn suggested some pictures of a few of the other little mods might be of interest to people building one - especially if they are building and modifying one of the old kits. 

First up shows the cockpit area - you can see that I have removed the central keel.  I looked at that for a while and realised that once the stringers were on it added no strength and was really just a passenger - gone with it!  You will also see the 1/16 square across the top of former 5 (also done on the other 2 cockpit formers) 

Second is my patent diagonal bracing at former 8.  After I eviscerated the rear formers they were a little weak - (one of my suggestions to Avetek is that each former half be cut in 3 neatly interlocking sections with grain optimized)  Former 8 proved to be the key and that bracing made it all very rigid again. 

Next up is the main undercarriage.  As designed this was bound with thread to the bottom of the lower spar.  I cut a slot in the lower spar and mounted the U/C above the lower spar in a 1/16 OD aluminium tube.  The slot where the gear emerges (and the cut lower spar) is reinforced by a 0.6mm ply doubler let in to the underside of the wing.  You can also see the ply scab that locks the torsion bar against the rib.  The gear is free to rotate backwards in the slot

Finally here are the exhaust outlets which are each 2 ABS halves glued fettled and sanded


Title: Re: Avetek Pilatus PC9
Post by: billdennis747 on December 18, 2016, 04:47:53 AM
Mike, are the 'scallops' laser cut into the formers? Looks like you did it yourself.


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 18, 2016, 04:52:33 AM
No not laser cut. Just the old dowel and sandpaper lark


Title: Re: Avetek Pilatus PC9
Post by: DavidJP on December 18, 2016, 06:01:43 AM
And the stringers - are they set into the notches on the diagonal?  Sorry contact lenses may need cleaning!  Not sure if I have seen it before.  It looks very light!! :-[ :-[


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 18, 2016, 12:08:00 PM
No the diagonal bracing is just bevelled against the keels and glued against the face of the former.  The stringers are notched and then scalloped.  David you made a comment earlier on about a debate as to whether or not stringers should be notched.

I think that as with many things there is no right or wrong here - only preference and opinion.  If I were building this model again (as I may do) I would be inclined to build laminated formers and set them all up in a jig.  1/16 square stringers all round and plenty of them - no keels, no notches. (Check out the Bristol Brigand build on this forum for inspiration!) I've never been a big fan of kit notches as I  have had so many where the notches were way off the mark. 

I used the notches on this model as I was proving the formers for the kit but usually if building from a kit with notches I would mark the position of the stringer at the bottom of each notch and then trim the formers down to the level of the bottom of the notches all around

Once the tissue is on I don't think there is any real risk of the stringers moving


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 20, 2016, 12:21:49 AM
You may have been wondering how the nose block was going to work so here it is.  The circular plug is what gets removed for winding and allows the ingress of a decent blast tube.  It has a keyway which indexes on a hardwood key glued inside the tube.    The square block will be drilled for the bearing.  This is an interference fit in the circular block and can be removed to be relieved and shimmed as required for thrust adjustments.

 The second picture shows the rear of the plug  The slot allows the prop hook through the back of the block without having the whole assembly arrive at the rear peg at a hell of a hurry!!

The last picture shows the square block in position.  It is below the nose block so that all the various accoutrements (thrust bearing and freewheel) are hidden and don't push that beautiful spinner out too far.


Title: Re: Avetek Pilatus PC9
Post by: DavidJP on December 20, 2016, 08:13:46 AM
Thanks for those thoughts on stringers and notches Mike.  I am much of the same view. Admittedly my preference for no notches stems from the old KK kits built as a kid and finding they were a nuisance generally.  So I cheated and just stuck them on.  Don't recall any detriment to appearance or otherwise.  But it did not occur to me to reduce the former in size!  Oh dear, I wonder if Messrs Dean and Hatfull can forgive me?  Ruining the authenticity.


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on December 21, 2016, 02:33:46 PM
Morning all.  There will be a brief hiatus on this thread while we deal with Christmas and then I have 10 days at Scout Jamboree with 4500 kids!  To all the usual suspects out there a very merry Christmas or whatever you choose to celebrate.  Thankyou everyone for the knowledge and humour shared during the year.  Being a part of the community has certainly been a highlight for me this year.  Regards, Mike


Title: Re: Avetek Pilatus PC9
Post by: DavidJP on December 21, 2016, 04:56:27 PM
Well do have fun and your good wishes are heartily reciprocated.  I am again impressed by your continuity and  the committment to the workbench.

And I hope the jamboree goes well because it is a great movement.  That it survives and grows in the society we have today continually gives me confidence that the world of PC and mania for levelling everything down will not win.  The characters that emerge from the scout movement will ensure that. 4500 kids?. Mayb, but they are real kids! So it should be fun.  Even if a tint of masochism is a benefit. ;) :)

Best to all then down there.


Title: Re: Avetek Pilatus PC9
Post by: Work In Progress on January 02, 2017, 05:33:25 AM
I'm very much looking forward to this model continuing now we're entering the New year, and I should also apologise to Gwyn for not responding earlier to his kind offer in #40 on page 2 above - email inbound!


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 15, 2017, 06:25:03 PM
Happy new year to all - after Christmas and the 10 days at Scout Jamboree and another week doing a major clean out of the shed I can report that I'm back in the saddle and that progress has resumed!

I covered and doped all of the flying surfaces yesterday and started on the fuselage.  In an early post on this thread Strat-O commented on the rather acute curvature behind the cockpit and how that might be to cover. 

Actually the one disadvantage of scalloping the formers is that it can make for some fairly complex covering challenges.  This one is nowhere near impossible however when I looked at it again I realised that while it might be an impressive modelling feat from a purely constructional standpoint it would not result in a convincing scale representation of the real aircraft.  Therefore I have filled in between the stringers of that section with some of my really really dead wood to get a nicer shape.  I'll hopefully get it far enough along to share some pictures tonight.   


Title: Re: Avetek Pilatus PC9
Post by: Work In Progress on January 15, 2017, 06:44:43 PM
Yes... I've been caught that way before, having to fill in tissue attachment where I had nicely scalloped things. Frustrating.
Glad to hear you are back working on the model, which has inspired me to order the Porter and PT-19 to go along with my existing Auster AOP.9 and Piper Tomahawk kits


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 16, 2017, 04:12:18 AM
As promised here are some photos by way of an update.  The fill in between the rear deck stringers was a satisfying little job and I think has resulted in a much better shape for virtually no additional weight.  Fuselage is now partially covered - one piece of tissue did that much, including the rear decking area, so there you go!


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 17, 2017, 04:33:52 AM
Here we are - all covered and clear doped 31grams as you see it here including the prop and bearing.  Interestingly I chose to cover the fuselage in the old 'kit' tissue we used to get - principally because it has incredible wet strength.  The disadvantage of this tissue is that it is quite porous and looks like it was hewn from a block with a cross-cut saw - often remaining soft and fuzzy even after dope.  Not mine however.  The secret is 2 coats of weak shrinking dope. and 2 further coats of non-shrinking.  rubbed down carefully with 800 grit wet n dry after each coat - As smooth as Esaki.


Title: Re: Avetek Pilatus PC9
Post by: DavidJP on January 17, 2017, 07:47:06 AM
Huh........ bit nice 'innit??  Looks as though i could be a tail dragger though??


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 17, 2017, 12:00:57 PM
Yes, I had to put a block under the rear for those photos but when the prop and hook are it it sits properly on the wheels - bottom line is that it has to or the COG is wrong!


Title: Re: Avetek Pilatus PC9
Post by: DavidJP on January 17, 2017, 03:10:30 PM
Sorry Mike - I have just noticed the emoji I added to show I was teasing have gone missing!


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 17, 2017, 03:12:57 PM
That's all right - my wife accuses me of dragging my a** too ;D!


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 18, 2017, 03:44:30 AM
No pictures tonight but some good news.  We had a calm spell this evening in what has to be the windiest summer on record so I taped all the bits together and took it outside for a test glide.  Quite amazing - an absolutely rock steady floaty slow glide.  Also got the nose bearing and prop assembly sorted. 


Title: Re: Avetek Pilatus PC9
Post by: Work In Progress on January 20, 2017, 01:42:37 PM
Encouraging! Your weight reduction efforts appear to have paid off handsomely.


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 20, 2017, 07:47:37 PM
I thought it might be worth describing my process for achieving a reliable freewheeling device while using the scale spinner, which really is necessary on this model.

Earlier in this build you saw the bearing block that is an insert in the nose plug.  By filing and shimming this block as required I can fine-tune the thrustlines.  The first picture below shows the 7" plastic prop which I have lightened and balanced in the usual manner.  The clutch helix and bearing nub have also been removed.  A hole has been drilled for the new clutch dog bush, which is a firm interference fit.

Picture 2 shows the shaft assembly - we have 2 3/64 Peck bearings in the bearing block.  Working from the front of the bearing block outwards there is a bespoke washer which is the inner seat for the Jasco thrust bearing that comes next.  Then we have the prop driver plate which is soldered well to the shaft.  You can see the actual driver which is a short length of brass tube soldered on well.  Immediately after than is a short length of tube to space the prop out from the driver plate.

The next picture shows the prop and clutch dog installed and in the driving position.

To seat the spinner accurately I have glued a styrene base plate to the front of the prop.  The final photo shows my method for ensuring that this is accurately aligned in all axes.  I drilled a hole in a block of hardwood and inserted the current excess prop shaft into it to hold everything nice and square.

Next stage is to carefully solder retainers for the clutch dog and prop. and then glue the spinner in position.


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 20, 2017, 08:49:19 PM
Just to finish this subject off, first up is a back view of the prop showing how the spinner plate cetres this nicely and provides a good glue surface.

Next up is the front view with prop and clutch dog retainers soldered on.

Then a couple of shots with the spinner glued on and the bearing block assembly inserted into the nose block, and finally the completed item in the model. 

All works perfectly!


Title: Re: Avetek Pilatus PC9
Post by: DavidJP on January 21, 2017, 04:20:57 AM
No pictures tonight but some good news.  We had a calm spell this evening in what has to be the windiest summer on record so I taped all the bits together and took it outside for a test glide.  Quite amazing - an absolutely rock steady floaty slow glide.  Also got the nose bearing and prop assembly sorted. 

You jammy ********!!  Mind you being upside down does help defy gravity. ;)


Title: Re: Avetek Pilatus PC9
Post by: Balsa Ace on January 21, 2017, 06:26:36 AM
Very nice!

Scott


Title: Re: Avetek Pilatus PC9
Post by: Work In Progress on January 21, 2017, 09:25:04 AM
I am highly impressed with your prop clutch work. It's streets ahead of anything I've ever done in that part of an aeroplane. But I think I could probably follow along using those pics as a guide. I have a current application for it, too.


Title: Re: Avetek Pilatus PC9
Post by: tom arnold on January 21, 2017, 10:34:36 AM
While I am impressed with the mechanics of it all, what really amazes me is how you got such a perfect fitting spinner around the prop blade. How did you measure the precise angle, thickness, and shape of the prop blade at that intersection of it and the spinner?  I have never been able to do more than hack a hole with a chain saw there and hope for the best.....


Title: Re: Avetek Pilatus PC9
Post by: billdennis747 on January 21, 2017, 01:03:06 PM
Mike, can you explain how you engage the drive pin when it's wrapped in spinner? Do you just shake it about


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 21, 2017, 02:24:00 PM
Hi and thanks for the nice comments everyone. 

WIP, I guess everyone has their little hobby horses and mine is getting the business end right on rubber models.  I believe that having a free wheel that works reliably , a decent bearing that supports the shaft properly and minimizes friction losses, a lightened and balanced prop, and the ability to reliably adjust thrustlines are collectively the heart and soul of a rubber model.  So many beautiful models I see are made less than they could be by the old paint stirrer flopping about a skinny piece of wire and retained by the 90 degree bend and helix.  Don't mean to sound strident but that's my particular schtick!

Tom, I'd love to tell you about some clever science but this is how I did it: If you look at the pics you'll se that the cutout over the leading edges is just vertical (clever would be having the spinner follow the underside of the blade too but alas...)  First important job is to make a mark exactly diametrically across so that the 2 vertical cuts are in the right place.  Get them the same depth and radius the bottom of the cuts nicely.  Lock that in and don't touch it.  Then relieve the back of the cut to match the rear camber of the prop.  Using the mark one eyecrometer get this close but ensure that you get both sides the same so that the spinner will sit level over the prop. Then, get a felt pen and run this along the join using the back of the prop as your marking gauge to get the shape perfect.  Work slowly and as the spinner fits closer and closer revise your gauged mark as required.  Hopefully this makes sense.

Bill if you look at the photo that shows the rear view of the completed unit installed in the nose plug you'll se that the mechanism is very visible.  You can just shake the thing into the right position or you can poke something small in there to flick it over - either way it's easy.  I pull the nose plug out and set the mechanism first prior to winding.   


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 22, 2017, 02:34:35 AM
I had wondered whether drilling the prop to receive the clutch dog bush was asking for trouble.  When I tested the thing I dropped something I was holding which hit the prop while it was running and it snapped at that point - not surprising.  Anyway here is version 2 - a much more cunning plan indeed.  This improvement strengthens the prop hub rather than weakens it and also provides the perfect seat for the spinner - Game over!


Title: Re: Avetek Pilatus PC9
Post by: strat-o on January 22, 2017, 12:25:13 PM
Whew, finally understand it!  My expectation that was leading me down the wrong path to understanding this was the locking mechanism was in front of the prop, but it's not, it's behind the prop and thus outside of the spinner.  I was also imagining that a missing spring was somehow involved but there is none required in this design. 

To maybe help others who are still struggling with how this works:  The brass tube which is on the rubber side (which is really just a peg) impinges against a swinging gate (which in this instance is called the clutch dog).  During the power phase the gate is locked against the center hub.  During the freewheeling phase the prop freewheels around and the brass peg pushes the gate aside.

What is cool about this idea is you could conceivably model a design that is spinner-less like a Thunderbolt or Hellcat.  (You would have to solve the issue of what to do about drilling the prop for the clutch dog)


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 22, 2017, 01:18:28 PM
Here's a link to my Thomas Designs Bristol Scout thread which has a version of this freewheel system used on a spinner-less prop.  It was necessary to build the hub up using a method shown to me by Rich Weber   http://www.hippocketaeronautics.com/hpa_forum/index.php?topic=20305.50

I'll do a quick diagram and post it to help aid understanding


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 22, 2017, 01:51:49 PM
As promised here is a rough sketch of the mechanism.  Shown in the freewheeling position


Title: Re: Avetek Pilatus PC9
Post by: OZPAF on January 22, 2017, 06:39:24 PM
It looks interesting Mike but I'm puzzled as to how the drive dog latches. Whoops ok it looks like it engages behind the prop shaft.
Clever and very neat.

John


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 22, 2017, 07:26:57 PM
Just to complete things I thought I'd re-post the sketch of my little jig for making washers and discs the perfect size and with the perfect size hole - the washers, drive plate and the styrene spinner plates are all made this way on my little table sander


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 25, 2017, 03:37:16 AM
Here she is finished and assembled ready to test.  I decided that I would fly her first so that Gwyn can finalise any design changes for the kit and throw some paint on afterwards so the canopy is only taped on.  No detail on the U/C as yet.  Elevator and rudder are attached using my usual method of aluminium wire hinges with flexible RC56 holding the joint together.   Final weight as you see her here is 35 grams and reasonably nose heavy.  At that weight she should be able to fly nicely on 4 strands of 1/8 or 5/32. 


Title: Re: Avetek Pilatus PC9
Post by: Andrew Darby on January 25, 2017, 01:49:41 PM
Very Handsome indeed...

Andrew


Title: Re: Avetek Pilatus PC9
Post by: OZPAF on January 25, 2017, 05:45:38 PM
What no wrinkles - that's a bit rough :) Fine effort Mike.

John


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 25, 2017, 06:22:52 PM
No sorry,

when I was adding the lightness I forgot to install the wrinkles - Doh! ;D


Title: Re: Avetek Pilatus PC9
Post by: rgroener on January 26, 2017, 02:01:19 AM
Wow, very nice PC-9!
I checked out your Avetek site, great range of planes you offer!
Looking forward to see your PC-9 covered.

Roman


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 26, 2017, 02:22:05 AM
Er it is covered and in fact I've Just been out flying it Roman - looks very promising - and a very appropriate one for you to build.  I wondered if you had been following this.  I have decided to make it into a PC-9M with the larger fin as there is a very nice black and gold colour scheme for the prototype.  Just to clarify though Avetek is Gwyn and Christina Avenell's business.  I'm just helping out with the free flight side (which is great fun!)


Title: Re: Avetek Pilatus PC9
Post by: ffscale on January 26, 2017, 05:49:52 AM
Another perfect covering job Mike - it's a really nice looking model.  Thanks for the detailed coverage of your freewheel setup - it makes my efforts at the front end of my rubber models look very amateurish.  Definitely something I need to work on.

Mike S


Title: Re: Avetek Pilatus PC9
Post by: rgroener on January 26, 2017, 06:23:36 AM
Quote
Er it is covered and in fact I've Just been out flying it
...hmmm, now that you say it ::) I was jumping back and forward since I did not realised this thread before...  I must have missed the pics with the covered plane :-[
I have to read the whole thread in one piece as soon as i have some time.

Is this the colour scheme your are thinking about?
http://www.pilatus-aircraft.com/00-def/main/scripts/ckfinder/userfiles/files/Downloads/Model%20Plans/Pilatus%20Aircraft%20Ltd%20-%20PC-9%20M%20Model%20Plan.pdf (http://www.pilatus-aircraft.com/00-def/main/scripts/ckfinder/userfiles/files/Downloads/Model%20Plans/Pilatus%20Aircraft%20Ltd%20-%20PC-9%20M%20Model%20Plan.pdf)
http://www.pilatus-aircraft.com/00-def/main/scripts/ckfinder/userfiles/files/Downloads/Brochures/Pilatus%20Aircraft%20Ltd%20-%20PC9M%20Factsheet.pdf (http://www.pilatus-aircraft.com/00-def/main/scripts/ckfinder/userfiles/files/Downloads/Brochures/Pilatus%20Aircraft%20Ltd%20-%20PC9M%20Factsheet.pdf)

I will have to build one for sure. I see the PC-6, PC7 and PC9 flying a lot from my office window.
If I understand it right, your changes will be included in a new kit?
When I checked the website, I missed for most models some information about the price. But as I sad, I really had no time, just went through it for the moment.

Best regards Roman




Title: Re: Avetek Pilatus PC9
Post by: Pit on January 26, 2017, 10:00:24 AM
That black/gold scheme is the one I've earmarked for my version.  Seems simple enough (it really isn't, tho), but getting the "gold" to look right means paint or artists powder coat (me got both ;D).

Pete


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 26, 2017, 12:13:13 PM
Anyone wanting to build one of these will surely thank Roman for those links - Pilatus has provided a model-building plan.  you get colour pictures, a fully dimensioned 3-view (including the engnine thrustline and washout for the real one) and a fully detailed colour scheme - game over for your documentation!!  Thanks again Roman.


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 26, 2017, 12:17:08 PM
That black/gold scheme is the one I've earmarked for my version.  Seems simple enough (it really isn't, tho), but getting the "gold" to look right means paint or artists powder coat (me got both ;D).

Pete

Forgot to mention - Tamiya acrylic gold will be absolutely perfect.  I've used this on my 2 black and gold Tiger moths.


Title: Re: Avetek Pilatus PC9
Post by: rgroener on January 27, 2017, 01:07:42 AM
Pilatus Aircraft Ltd. provides quite a lot of nice documentation for us model builders.
You can find all the available plans here: http://www.pilatus-aircraft.com/#214 (http://www.pilatus-aircraft.com/#214)
Some more pictures of the gold scheme: http://www.pilatus-aircraft.com/#219 (http://www.pilatus-aircraft.com/#219)

sorry for hitchhiking your thread, now lets take some more popcorn and follow your great thread ;D

Roman





Title: Re: Avetek Pilatus PC9
Post by: Avalanche on January 27, 2017, 02:13:00 PM
What a great resource supplied by Pilatus - no excuse for inaccurate models now!


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 27, 2017, 09:28:43 PM
Well folks, Roman's documentation for the M model came about the same time that I began to suspect that she was a little short of fin area.  Long nose short-ish back bit and that big canopy that could be blanketing the fin - so she's now a PC-9M. The extra gusset on the fin was built in mid-air as I didn't feel like taking the fin off.  This was an interesting little task.  Because the leading edges on the fin had already been rounded off it now meant that all of the new pieces not only had to have the usual bevels,  but also had to be filed out half round to fit nicely over the existing structure.  No-one will ever see or care,  but I will know that it is right!

It's still blowing a gale here so hopefully we could get some suitable weather for trimming in the morning


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 27, 2017, 09:35:53 PM
Forgot to mention - final weight with rubber (4 strands of 1/8 24" long braided )and ballasted ready to fly is 45g.  This low weight was one of the goals as she doesn't have much wing for what is quite a big model.


Title: Re: Avetek Pilatus PC9
Post by: Don McLellan on January 28, 2017, 03:21:04 AM
Exceptional model Mike, beautifully covered.

Don


Title: Re: Avetek Pilatus PC9
Post by: DavidJP on January 28, 2017, 04:38:19 AM
Blow the model - what about the weight?. I am lucky to get a Peanut down to that figure - or is it being upside down? ::)x


Title: Re: Avetek Pilatus PC9
Post by: Work In Progress on January 28, 2017, 09:09:13 AM
That's a good weight!

Those Pilatus files are a great boon. With almost 4000 fpm rate of climb at sea level the full size is quite a hot-rod.

It's an interesting aeroplane, broadly the same configuration and power as an early-WW2 fighter but with a much longer fuselage, especially in the nose - caused by the lightness of gas turbine engines compared to pistons of the same power, of course.

While it may not have a lot of wing, it does facilitate a lot of rubber.


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on January 28, 2017, 02:49:11 PM
An absolutely stunning calm morning here this morning so out for some testing with my new toy.  I only took it up to 700 turns because I admit I wasn't using protection, but at that number of turns we were doing around the 30 second mark.  She flies in reasonably tight left circles and I think I need to adjust the washout a bit but other than that no issues.  Once the turn is ironed out a bit height and duration will go up.  The big nose plug idea is an absolute gem in practice and the freewheel works perfectly.  As it turns out I don't need to set the mechanism before hooking up - I just put the rubber on the hook and then give it a wee shake if necessary to flip the lever over - sometimes it sets itself anyway.  Thrustlines are important for this model and anyone building one would be sunk without a reliable method of making adjustments, so even though my square bearing block insert may seem like a bit of faffing about it has proved a godsend.  4 strands of 1/8 are certainly all it will need.  Looks very realistic in the air and I'm morally certain that the additional fin has helped - in the initial flights before additional right thrust it was stable in a near vertical turn!


Title: Re: Avetek Pilatus PC9
Post by: danmellor on January 28, 2017, 04:40:31 PM
This whole thread has been inspiring! I still have a lot to learn...

Cheers,

Dan.


Title: Re: Avetek Pilatus PC9
Post by: OZPAF on January 28, 2017, 05:03:45 PM
Thanks for a very informative thread mike on such a beautifully done model. Better not fly in Oz though - our large dragonflies may run off with it :)

John


Title: Re: Avetek Pilatus PC9
Post by: Avalanche on February 01, 2017, 11:24:44 PM
We have made a lot of the changes Mike has suggested and if anyone has one of these kits and would like it updated, contact us on aveteknz@gmail.com and we will work something out. Mike has done a great job for us with this kit - thanks mate, the beers are on me.

Gwyn


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on February 02, 2017, 04:26:05 PM
Thanks Gwyn,  this was not a 'job' though - pure pleasure!  To anyone who has one of the older kits Gwyn's update is a really great option and I'm sure it won't hurt your pocket much.  If you go back to the picture Pit posted in reply#7 you can see some of the more obvious changes but there are many more.

I'd love to see someone else do one of these on the forum

Cheers, Mike


Title: Re: Avetek Pilatus PC9
Post by: rgroener on February 06, 2017, 02:13:44 AM
Very very nice!

I definitely want to build one.
Will the modification "just" be available as an update package for the original Airsail kit, or will the kit be modified?
In other words, if I want to buy one, will I have to order the Airsail kit and the update package, or can I order now the Airsail kit and will get the modified version?

Roman


Title: Re: Avetek Pilatus PC9
Post by: Avalanche on February 06, 2017, 04:34:14 AM
The kits that go out the door from now on will be to the revised design, just drop me an email at aveteknz@gmail.com. If you have an old kit, email me and I will sort something out for you.

Gwyn


Title: Re: Avetek Pilatus PC9
Post by: rgroener on February 06, 2017, 10:39:30 AM
Gwyn, thanks for your clarification.



Title: Re: Avetek Pilatus PC9
Post by: rgroener on February 24, 2017, 02:18:11 AM
Have you started giving this beauty a coloured dress?
Roman


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on February 24, 2017, 02:07:30 PM
Hi Roman.  No not yet.  I've been busy with the 2 big (1/5) Tiger Moths that Gwyn and I are building for .91 4 stroke.  Funnily enough though today I am down at our air force base at Ohakea for a big air show  at which the Beech T6C team will be performing.   These being the American built version.  Thanks for reminding me that i need to blow same colour on the PC9M.  By the way I loved the flying shots of your Pacer and travelair


Title: Re: Avetek Pilatus PC9
Post by: rgroener on February 26, 2017, 12:28:34 PM
Dont hurry, I just wanted to ask if there are some news...
Good to hear that you are busy building and enjoying the airshow.
I hope to post more pictures after our spring meeting next month. At the moment I am busy eating out to make sure that the weather is nice ;D




Title: Re: Avetek Pilatus PC9
Post by: rgroener on August 14, 2017, 01:17:48 AM
I couldn't resist and started your PC-9 Kit  :D
What do you prefer, should I start a separate thread or post to this PC-9 thread?
I dont care and can see pro and contra arguments for both ways...

Best regards Roman


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on August 14, 2017, 02:41:15 AM
that's great news Roman!!  if you do it here it's possibly easier to compare notes but I have no preference.  Just looking forward to seeing someone else build one


Title: Re: Avetek Pilatus PC9
Post by: rgroener on August 15, 2017, 01:48:46 AM
I thought the same, I like it if there is one thread for the one kit. This way you have all the information about this kit in one place. But I know also that other people prefer to have their own thread for every new plane.... Therefore I thought asking couldn't hurt ;)

I will post progress here soon.

Roman


Title: Re: Avetek Pilatus PC9
Post by: rgroener on August 20, 2017, 11:03:15 AM
Here is what I have so far.
The wing parts are nearly done, including most of the sanding.
Stab and rudder still need some sanding...

I started the first half of the fuselage. Next will be to take the fuselage from the building board and add the other half of the formers.

I plan to make the landing gear removable since I mostly fly over grass but want to be able to fly it indoor.
Most likely I will make the front part of the fuselage with wood and not with the delivered molded plastic part. There is nothing wrong with the plastic part, the quality looks very good. It's more my personal antipathy against plastic.... ::)

I will take the weight of your PC-9 as my goal. I have to fight for it.

Roman



Title: Re: Avetek Pilatus PC9
Post by: Sky9pilot on August 20, 2017, 10:41:08 PM
Looks like we're going to have two very nice looking PC-9's.  Keep up the great work!
Tom


Title: Re: Avetek Pilatus PC9
Post by: rgroener on February 05, 2018, 06:27:05 AM
I did some more work on the fuselage. This thing is quite big, nearly as long as the  span of the bird :)
It looks still rough, since no sanding is done yet. There are some bits missing before I can start with the sanding.
I also have to study the nose part a bit. I will replace the plastig part and use balsa instead. It's nothing wrong with the plastic parts, they look nice, but I just prefer wood.

Roman


Title: Re: Avetek Pilatus PC9
Post by: Indoorflyer on February 05, 2018, 02:02:19 PM
Looking good Roman.
I re-read this thread to pick up on changes Mike ZK made for the "new" laser cut version. My kit is the original die cut, and had problems with the wing saddle/center section matching. (Chord of center section was longer than the space in the saddle pieces)
If Mike checks in here, what incidence is recommended? Did the LE get notched,or was a combination of trimming the TE and LE used, to allow the wing to seat properly under the fuselage? Thanks!


Title: Re: Avetek Pilatus PC9
Post by: Sky9pilot on February 13, 2018, 12:17:08 AM
I was having some difficulty with your drawing in reply #72 understanding the thrust bearing rear seat and prop shaft bushing.  I redrew the drawing as best I could looking at the Scout nose block as well.  I'd love to know if this is accurate (though not to any scale) or are there changes that need to be made.  Thanks Mike for your original drawing and pictures.
Tom


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on February 13, 2018, 02:49:18 AM
Tom you got it 100% right.  Thanks for providing this much superior drawing.  The only addition I would now make is a spacer (brass tube) behind the prop to stop it coming back and possibly binding on the drive dog


Title: Re: Avetek Pilatus PC9
Post by: Sky9pilot on February 13, 2018, 04:43:44 PM
Mike,
Here's a revised drawing hopefully expressing what you suggested.
Tom


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on February 13, 2018, 04:57:18 PM
Tom, I think the drawing would be confusing for people unfamiliar with the setup - I don't think its really clear that there is a spacer.  I just went back to the Bristol Scout photos in reply # 69 and they show a second smaller soldered washer immediately behind the prop which stops it coming back into contact with the mechanism. (forgot I had done it that way!)  Check out photos 1 and 4 which make that really clear.  Possibly you should draw it like that
http://www.hippocketaeronautics.com/hpa_forum/index.php?topic=20305.50  Sorry I couldn't work out how to create a link straight to the spot but this is close!


Title: Re: Avetek Pilatus PC9
Post by: strat-o on February 13, 2018, 05:10:45 PM
This is a really versatile design, I think.  I can imagine it working well for a pusher with a spinner (like a Mitsubishi Shinden, for example) with almost no modification required.


Title: Re: Avetek Pilatus PC9
Post by: Sky9pilot on February 13, 2018, 06:44:02 PM
Mike
I see what you're talking about.  The extended brass tube would probably work as well, but you were using a rear prop plate and a front prop plate so this washer would seem to give a broader surface for the rear prop plate to rest on.  I did a bit of photoshop to your picture to see if I got what you referred to.

Modified drawing #3  ;D ;) 8)
Tom


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on February 13, 2018, 07:03:41 PM
Yep you nailed it! I would make it clear in the diagram that that washer is also soldered on.  You could show meniscii of solder on all the soldered bits. L


Title: Re: Avetek Pilatus PC9
Post by: Sky9pilot on February 13, 2018, 07:07:25 PM
Back to the CAD program... ;D ;) 8) I actually think I can build one of these now!!!! So it was worth the effort! ;)
edit:  drawing 3a_2
Tom


Title: Re: Avetek Pilatus PC9
Post by: Sky9pilot on February 13, 2018, 09:18:11 PM
MKelly had this suggestion..."The drawing looks good.  The only suggestion I have is to move the drive pin closer to the drive shaft - it needs to be inside the radius of the clutch dog pivot point so the clutch dog can pass over the pin when freewheeling."
Mike

Here's the, I believe, final draft of the drawing:
Tom


Title: Re: Avetek Pilatus PC9
Post by: rgroener on March 25, 2018, 01:38:34 PM
Some progress on the nose of my PC-9.
I managed to build a nose out of balsa. It is not carved from one piece, I tried to keep it light...
I had first to build a prototype to make sure, that it works the way I had in my head....
As you can see, its only roughly sanded. But I am satisfied with it so far.

Best regards Roman



Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on March 25, 2018, 01:53:00 PM
As indeed you should be happy with it - nice work!


Title: Re: Avetek Pilatus PC9
Post by: ZK-AUD on April 02, 2018, 03:24:24 PM
A couple of shots showing the wing attachment


Title: Re: Avetek Pilatus PC9
Post by: rgroener on June 03, 2018, 09:49:22 AM
She slowly starts to look like an airplane...

I realised too late, that the incident angle of the wing might be to big. I just checked your pictures earlier in the thread and in one picture I can clearly see, that your angle is smaller. I will correct it, it shouldn't be a big deal.

One of the next steps will be adding the aluminium tubes for the main landing gear. I will make the landing gear removable, since I mostly fly outdoor over grass, but dont want to waste the opportunity to fly it indoor some time.


Roman



Title: Re: Avetek Pilatus PC9
Post by: dputt7 on June 04, 2018, 03:55:54 AM
Looks really smart Roman


Title: Re: Avetek Pilatus PC9
Post by: BlueBaron on June 15, 2018, 08:06:21 PM
Hi, Great looking model. Any update to how it's coming on? Thanks Michael


Title: Re: Avetek Pilatus PC9
Post by: rgroener on October 28, 2018, 12:35:54 PM
I used my holidays to go on with the PC-9. The rough part of the covering is done. Some details are still missing.
I am happy with the covering so far. I like covering my models, but it is also a critical part of the building process. You can spoil a project in no time if something goes wrong.
I am lucky, this time it was not the case  :)
About the color scheme.... well, with this contrast it will be easy to find it in the high grass ;D

Next is the propeller. The propeller I did was a three blade propeller. Stupid me... the PC-9 has a four blade propeller.... Therefore a new one has to be done.

Here are some pics.... Roman

By the way... the canopy fits perfectly. I never had such a nice canopy. Well done Avetek!

The last picture is a comparison with a pistachio ;D




Title: Re: Avetek Pilatus PC9
Post by: LASTWOODSMAN on October 28, 2018, 12:58:22 PM
Hi Roman.  That is really gorgeous sunlight coloring your Pilatus PC9 in pic #4 !   8)    Wonderful color scheme too!

LASTWOODSMAN
Richard