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Old Feb 21, 2013, 03:23 AM
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D design's Avatar
New Zealand, Northland, Totara North
Joined Feb 2012
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Never flown a rc plane in my life but would like to someday.
Just got a Great Planes Super Decathlon! I'm going to fully restore it and give it back its former glory. Of corse im not going to fly it untill ive done so many hours in a high wing trainer.

Can i use half oz glass for the fuse and paint over or is that method to heavy.

Cheers guys and well done EJ, beautiful plane!
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Last edited by D design; Feb 21, 2013 at 03:24 AM. Reason: spelling
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Old Feb 21, 2013, 08:33 AM
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United States, WA, Hoodsport
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Thanks D,

Quote:
Originally Posted by D design View Post
Never flown a rc plane in my life but would like to someday.
Just got a Great Planes Super Decathlon! I'm going to fully restore it and give it back its former glory. Of corse im not going to fly it untill ive done so many hours in a high wing trainer.
The BEST approach, bar none. Get comfortable and confident with a trainer (and instructor) is the natural progression.

Quote:
Originally Posted by D design View Post
Can i use half oz glass for the fuse and paint over or is that method to heavy.
I looked-up the Great Planes Super Decathlon kit and found the build manual:

http://manuals.hobbico.com/gpm/gpma0185-manual.pdf

Hopefully this is your plane.

Weight is a factor with the glass cloth/resin method, but the biggest detractor is using it over open areas. There is no way to get it tight, and it is impossible to sand in the open areas. NOT the way to go. If you do not want to go the plastic shrink covering route (Monokote, Ultracote, etc.) you can go with Solartex or Sig Koverite and paint. Also, Solartex also comes in colors. I just chose to go the paint route.

Hope this helps.

EJWash
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Old Feb 21, 2013, 03:13 PM
NORTHLAND NEW ZEALAND
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New Zealand, Northland, Totara North
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Ok thanks.
Cant find in the manual the weight and cg placement?

Cheers
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Last edited by D design; Feb 21, 2013 at 03:53 PM. Reason: found what i wanted
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Old Feb 21, 2013, 04:23 PM
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North Carolina
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Quote:
Originally Posted by D design View Post
Never flown a rc plane in my life but would like to someday.
Just got a Great Planes Super Decathlon! I'm going to fully restore it and give it back its former glory. Of corse im not going to fly it untill ive done so many hours in a high wing trainer.

Can i use half oz glass for the fuse and paint over or is that method to heavy.

Cheers guys and well done EJ, beautiful plane!
I would go with the lightest weight covering I could find for the Decathlon. The GP kit has a symmetrical wing on it, and it is a super snappy airframe. Any extra weight is just going to exacerbate the issue. Don't get me wrong, its a great flying model, but slow flight is not one of its greater attributes, so you want to keep the wing loading as low as you can. This model will drop a wing, and snap on you so fast, that if your not ready for it, it can get away from you at a low altitude. Good luck with your rebuild.
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Old Feb 21, 2013, 05:40 PM
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Quote:
Originally Posted by D design View Post
Cant find in the manual the weight
Here's the spec sheet:

http://www.greatplanes.com/discontinued/gpma0185.html

Advertised weight: 5.75-6.75 lbs (2610-3060 g)

Quote:
Originally Posted by D design View Post
and cg placement?
Page 37, right-hand column titled "Balance Your Model".

EJWash
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Old Feb 26, 2013, 04:41 PM
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Quote:
Originally Posted by D design View Post
Never flown a rc plane in my life but would like to someday.
Just got a Great Planes Super Decathlon! I'm going to fully restore it and give it back its former glory. Of corse im not going to fly it untill ive done so many hours in a high wing trainer.

Can i use half oz glass for the fuse and paint over or is that method to heavy.

Cheers guys and well done EJ, beautiful plane!
This is not a plane to fly untill after you have mastered a trainer and tail draggers. Also you don't want to add any weight that is not needed. I would use Ultracoat to keep it light. The GP Super Decathlon can be a real handful as it is a clipped wing airobatic plane, not a trainer or cub as it resembles. Ground control and avoid flying it too slowly are the keys. Good luck.
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Old Oct 19, 2013, 07:39 PM
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Citabria in flight

This is the link of my Citabria flying...

Sig Citabria (1 min 16 sec)
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Old Oct 19, 2013, 09:32 PM
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Quote:
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This is the link of my Citabria flying...
VERY nice flying! Thanks for sharing.

Curious as to the specifications of your electric conversion. Please share them with us as well as some pics.

EJ
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Old Oct 20, 2013, 07:53 AM
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Great to see this thread back up and running again, EJ! I went back on the thread to see where this project is! It appears that you stopped around the same time I stopped on my Kaos build.

I love Aeronca Champions and Aeronca's lineage can certainly be seen in the Citabria/Bellanca Decathlon airplanes.
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Old Oct 20, 2013, 08:24 AM
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Mode One,

Yeah, got it covered and moved to another build. Now the Citabria is sharing a crate with my other models and waiting for a move from the Southwest to the Northwest. Probably won't see the light of day until the first to third-ish month of the new year.

EJ
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Old Oct 20, 2013, 10:14 AM
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Quote:
Originally Posted by EJWash1 View Post
VERY nice flying! Thanks for sharing.

Curious as to the specifications of your electric conversion. Please share them with us as well as some pics.

EJ
Helo EJWash1

This is my setup:


Motor: Dualsky XM4250CA-10 500 kv,

http://www.zenn.hu/modelsport/produc...oducts_id=4489

prop 3 blade, 13 x 8 Master Airscrew

http://www.hobbyking.com/hobbyking/s...ler_13x8_.html

battery Zippy 6S 5000 mAh

http://www.hobbyking.com/hobbyking/s...rch=zippy%206s


Total weight is 3650g.
It has two piece wing for easier transport.






I put two doors under the fuselage




For more pictures and full build treath follow this link:

http://www.rcfly4um.org/index.php/topic,8646.0.html
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Old Oct 20, 2013, 01:40 PM
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drjack,

I just finished going through your build thread. I would have said "read", but, well, you know.

Very clean and meticulous work. The work of a skilled craftsman.

I particularly liked your conversion to electric and your two-piece wing. Also interesting was watching you make fiberglass and vacuum-formed replacement parts.

EJ
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Old Oct 20, 2013, 06:14 PM
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Quote:
Originally Posted by EJWash1 View Post
drjack,

I just finished going through your build thread. I would have said "read", but, well, you know.

Very clean and meticulous work. The work of a skilled craftsman.

I particularly liked your conversion to electric and your two-piece wing. Also interesting was watching you make fiberglass and vacuum-formed replacement parts.

EJ
Yes I know that the google translate is not perfect , but there is still a lot of pictures for watching.. Actually, me and my friend makes two Citabrias, one from SIG kit, and other copy off it. That is the reason why we make copy off all plastics parts. If we broke something in flight we can easily repair it . The second model is not finished but will be very soon.
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Old Oct 21, 2013, 07:41 AM
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Drjack, I love your paint scheme! I had a Plane & Pilot magazine with a cover showing a Bellanca Decathlon, that had this paint scheme on it with the over all color being green, where yours is blue and blue where yours is yellow and white trim stripes around the shooting stars. It was a very dramatic paint scheme and so is yours! There was an article in this magazine about the Bellanca Decathlon this was back when they were still being made. I remember it also had an ad in the magazine on the Decathlon, showing the pilots face and in the back ground looking out through the windows, you could see that the airplane was inverted. The caption was There's a reason the call it a "Joy Stick"!
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Old Oct 26, 2013, 12:37 AM
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Mode One, The Citabria and the Decathlon are still being built today, just not by Bellanca.
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