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 1 
 on: Today at 05:47:58 AM 
Started by abl - Last post by ZK-AUD
Nice job - Looks like a great candidate for a bit of vac forming...

 2 
 on: Today at 04:43:06 AM 
Started by abl - Last post by Jack Plane
I've CA'd my prop to the backplate three times already, and still haven't got it both centred and rotationally level!

Plan D is to rig a rotating gluing-jig! At least the prop-zone is the one area where excess weight is welcome!

 3 
 on: Today at 04:20:52 AM 
Started by abl - Last post by abl
I think I'm going to have to make another spinner as - due to carelessness on my part - it's slightly under-size (in diameter); not a lot, but I can't really ignore it. Drat.

So I'll try your cross-laminated layers suggestion over the weekend.

 4 
 on: Today at 04:01:47 AM 
Started by danmellor - Last post by Jack Plane
That's a lovely looking Big Cub Dan.

 5 
 on: Today at 02:01:08 AM 
Started by danmellor - Last post by Pat D
looking good Dan !

 6 
 on: Today at 12:34:04 AM 
Started by RolandD6 - Last post by RolandD6
I have uploaded a zip file containing my photographs of an Armstrong Siddeley Genet Major engine. A model of the Major could be made using everything from the Major 1A except the crankcase and possibly the Pushrod Covers. There are many other photos of Genet Major engines on the internet that may clarify the Pushrod Cover issue but be aware that some photos are incorrectly labelled.

The internet has photos of the Genet Mk1 and Mk2 engines which are also 5 cylinder engines. Sometimes they are labelled Genet Minor but I suspect Armstrong Siddeley never used that label. The two Genets are smaller and different in details to the Major and Major 1A. The Genet Mk1 and Mk2 also have differences, the most obvious being the spark plugs. The spark plugs on the Mk1 appear to be parallel (or nearly so) and close together; the spark plugs on the Mk2 are splayed and may be further apart. Other differences will become apparent if photos of the two engines are studied.

This is likely to be my last post on the subject of Genet Major and Major 1A engines. I hope all of the foregoing is useful to someone.

Paul

 7 
 on: May 26, 2017, 11:08:13 PM 
Started by abl - Last post by flydean1
When you make your next one, try using cross-laminated layers.  Makes it much stronger, and the glue adds a bit of nose weight.

 8 
 on: May 26, 2017, 10:28:28 PM 
Started by scrubs - Last post by FF Bruce
Paul,one of our guys (Ralph Cooney) has a built up wing only 3\16 thick and has an airfoil like a long triangle and a high point at about 10% with a rounded L.E. He  gets much higher than anyone but when we fly at the same time I've been able to beat him 2 out of 3 times. Fun to watch as they glide down as to who will hit the ground first. He gets almost twice as high and in lift really gets hard to see in 90 sec.   

 9 
 on: May 26, 2017, 09:57:58 PM 
Started by scrubs - Last post by PaulBrad
Good information Bruce. I can see that a good catapult glider would do well with a motor up front. One thing we are seeing with the hand launch/catapult glider style thinner wing is a very good climb rate. The lower drag allows the model to get up there in a hurry. As long as there is a bit of lift in the area, the thinner wing works really well. It will be interesting to see how the duration numbers work out in no lift conditions compared to a thicker built up wing. Always a trade off when it comes to Free Flight competition. One of the fun things about Free Flight.

Paul Bradley

 10 
 on: May 26, 2017, 08:44:30 PM 
Started by Sky9pilot - Last post by Sky9pilot
Got some of the mojo back but haven't mastered the covering in the humid Pacific Northwest!  I also had trouble with running out of the good red tissue.  I am planning on painting anyway but this was a bit of a setback.  then found some red tissue but it was domestic from Dollar Store, bigger mistake. 
The starboard side of the fuselage is done in the Dollar Store red tissue and it bled all over my hands while applying it wet. Embarrassed Cry
I've already recovered the wing bottom twice and then the white tissue I thought was Esaki, wasn't!!  So when shrunk started to split along the ribs of the starboard wing and along the turbulator strip on the port wing.  I'm seriously considering recovering both the top and bottom of the wing again.   

Makes it hard to get the mojo back when this happens!

Here's some pictures anyway.... the camera is very generous!
Tom

 11 
 on: May 26, 2017, 07:45:57 PM 
Started by Garry - Last post by Mark Braunlich
Roman
Be aware of a problem with the Zero.  It's an A6M2 with the shorter wings of an A6M5.

 12 
 on: May 26, 2017, 07:32:01 PM 
Started by MKelly - Last post by Balsa Ace
Great Waco & great in-flight photos,Mike.

Scott

 13 
 on: May 26, 2017, 05:55:54 PM 
Started by scigs30 - Last post by Marc*G
I have not been able to find the other episodes.
This is the first episode where it is being built: https://www.youtube.com/watch?v=B2bycJMx2i8  This is the second season around 1970 I believe. There are two more later episodes I believe are in the last season that also features the model. One is where Peter and bobby are have a fight and the model gets broken. The last one is the episode where Greg and Marcia are competing on an obstacle course to see which one is the  better driver. In the beginning of this episode Peter can be seen painting it. Probable after fixing it from the previous episode.

 14 
 on: May 26, 2017, 05:11:25 PM 
Started by billdennis747 - Last post by PeeTee
good luck chaps!

peter

 15 
 on: May 26, 2017, 04:36:13 PM 
Started by abl - Last post by abl
I found a copy of the old Airfix/PSL book (Spitfire classic aircraft No. 1 by Cross & Scarborough) that was written for the 1/24th Spitfire kit back in 1971; it has a number of quite reasonable drawings, including the later (more pointed) spinner which looks similar to what's in the photograph above so I'm going to use it and if it doesn't look quite right I can always make another one - although I did approach the job with a degree of apprehension...

As it turned out, it was OK apart from the mess; a piece of 3/16" dowel was glued into a balsa block with medium cyano and then checked for alignment by eye as the glue was setting using an engineer's square, which turned out to be accurate enough. Grinding down the wood went reasonably well with a Premagrit block, but the dowel tends to loosen in the chuck unless the drill is run anticlockwise. And the jaws of the chuck tend to compress slight grooves in the dowel so if it does come loose, it has to go back in exactly the same place each time; I pencilled-in a small register mark on the base.

The insides of the spinner did need to be hollowed out a bit to give a bit of room for the prop hub and freewheel, using a rather lethal-looking dremel attachment. The spinner is quite small and I had visions of claret everywhere and a free fairground ride to A&E if the dremel slipped, so took the precaution of wearing an old motorcycle glove.

Not 100% sure how it's all going to fit together yet, I'm thinking of a backplate of 1/32" ply with a 1/4" hole through to allow the nose plug to contact the prop. I think it should be OK to have a little bit of balsa support structure on the other side of the backplate inside the spinner that the prop is glued to, and the spinner can be slotted and glued to the backplate. And I hope it doesn't wobble too much...

 16 
 on: May 26, 2017, 03:49:43 PM 
Started by p40qmilj - Last post by p40qmilj
 Grin well my balsa arrived so i now have plenty of pre-cut strips.

i have the 1/2 shell done on one side and will add the tail wheel while i have access.   i needed to trim the wing to fit in the slot too. 

i am going to Moncton to see the BEBEs fly. should be fun. will post pics on the bebe build.

jim

 17 
 on: May 26, 2017, 03:36:51 PM 
Started by MKelly - Last post by MKelly
Installed the upper fuselage formers.  I replaced the kit parts with lightweight 1/16" sheet.  The turtledeck formers are cut from sheet spliced together on a diagonal, excess cut out from the middle, and sanded down to about 1/32" thickness.  Replacing these parts saved about half a gram.

For the forward sheeting, I made a paper template, cut the balsa, test-fit it and trimmed the right edge to fit as good as I could get it, then glued the right edge to the framework.  After that set, I glued the sheeting most of the way across the formers, wetting it to make it easier to wrap, and leaving the last 1/8" unglued on the formers.  After again waiting for that glue to set, I trimmed and sanded the left edge to fit, then glued and taped that.

While that dried I put in the turtledeck stringers, stripped 1/20th" wide from 1/32" sheet.

Through all that I only managed to put my fingers through one longeron...twice.  Fortunately it's at the nose, where there will be carved balsa for the lower cowl.

Cheers,

Mike

 18 
 on: May 26, 2017, 03:27:02 PM 
Started by scrubs - Last post by FF Bruce
Just for more info. my build up wing is 6.7 grams. My friend took his cat.glider and put a motor on it, flew very well. 

 19 
 on: May 26, 2017, 03:26:56 PM 
Started by Garry - Last post by TheLurker
Grin any suggestions on printing plans?  i use 11 x 17 printer

jim
Dunno about Canada, but in the UK there a number of office supply companies that crop up on retail parks (generally selling a mix of PC hardware, office consumables and furniture for small companies - Staples is one - can't imagine you haven't got similar) and many, not all, of these have copy and print "shops" in them and they can print most formats from USB stick or CD.  Most recent plan I had printed was a copy of Keil Kraft's Minimoa (an Outerzone PDF) printed on 70gsm A0 (just too big for A1) for 4 quid.


 20 
 on: May 26, 2017, 03:20:44 PM 
Started by bgrove - Last post by Firefly
Two thoughts on the canopy: 1. Put a couple of 3/6"-1/4"  strips under the canopy plug. Glue them on so they do not shift. This will help eliminate the webbing  on the right front. 2. Drill a hole or two in the top of the canopy plug, all the way through the bottom, where the cut out will be located. This will help pull the plastic down around the top of the canopy. You might simulate the metal canopy frame with masking tape.

You are doing great, just a couple of more tries and you will nail it!

 21 
 on: May 26, 2017, 03:05:48 PM 
Started by scrubs - Last post by PaulBrad
Dave - Ralph and I are currently using wings carved from a piece of 3/16" balsa. Basically old school hand launch glider style. To be able to use that type of construction for a E20 model you have to be able find exceptional balsa. Something in the low 4 pound density range. Not easy to find. Ralph's wing came in at 9.7 grams with several coats of 50/50 clear dope and a little tissue trim.

My wing was much heavier. I decided to cut out the major portion of the wing and replace what was cut out with 1/16" balsa ribs. After doing that the wing was covered with tissue and given two coats of 50/50 dope. That wing came in at 10.3 grams. My target weight for a wing is 8 grams.

Back to the drawing board. My next wing was made from two layers of 1/32" balsa with a minimal internal structure. Basically  a spar made from 1/16" balsa and a few ribs to maintain the airfoil shape. That wing also got two coats of 50/50 clear dope. Its weight was also 10.3 grams.

In desperation I picked through all of my on hand balsa including the scrap pile. I found two pieces that were fairly close to the needed density. Since the wood was still heavier than what I wanted I also cut out the majority of the wood after the panel was shaped. After covering and applying two coats of 50/50 dope the wing came in at 7.6 grams. Now we were talking. I discovered some old tissue I had on hand that was very light. That combined with better wood allowed me to do slightly better than my 8 gram target weight for the wing.

Wind and rain have been a continuous problem for me here in Northern Kentucky, so I have not yet flown the model under power. Hand glides looks promising, but it is the powered flight that will tell the whole story. Hopefully I can get it in the air soon.

Paul

 22 
 on: May 26, 2017, 02:33:49 PM 
Started by billdennis747 - Last post by FFmodeller
Can only make it to watch on Saturday,  so I hope that something will be going on!

 23 
 on: May 26, 2017, 02:28:06 PM 
Started by billdennis747 - Last post by ZK-AUD
Good Luck To The NZ contingent.   We have 3 in attendance this year.  Wish I was one of them.  All the best to you all.

 24 
 on: May 26, 2017, 01:37:21 PM 
Started by billdennis747 - Last post by Pete Fardell
I presume Saturday is a fixed deal for the Kit Scale and AM/MA designs contests though? Or might they be moved to Sunday too?

 25 
 on: May 26, 2017, 01:12:50 PM 
Started by crashcaley - Last post by tross
Thanks John, Don.
They're a lot of fun. Smiley
TR

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