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Author Topic: Back to the Gee Bee D model....  (Read 196 times)
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kaintuck
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« on: November 04, 2020, 06:36:36 AM »

She has been gaining weight....I'm working on the undercarriage....those wheels pants!...a geebee cannot be without the iconic chubby wheel pants. But my question....I'm working them up in balsa wood, but....should I try a vacuum plastic route? Right now, batt and gear inside, wheels and pants, but no covering....20oz for 252sq inches...
Should I re engineer the pants?,,,I'm going to cut some lightening holes in those solid sheeted tailfeathers....
https://ibb.co/k0RkXPG
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Sundance12
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MAAC #25680, VE4BDF (amateur radio callsign)

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« Reply #1 on: November 04, 2020, 10:58:24 AM »

Now there is an interesting engine mount... .049 for effect...

Cheers

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kaintuck
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« Reply #2 on: November 11, 2020, 07:01:04 AM »

Now there is an interesting engine mount... .049 for effect...

Cheers


It's the williesnillies power package...they have a .020 and a .010 'package....cool stuff
Marc
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OZPAF
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« Reply #3 on: November 11, 2020, 06:49:35 PM »

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Right now, batt and gear inside, wheels and pants, but no covering....20oz for 252sq inches.


What span is this Marc? I calculate around 11.8 oz/ft2 - and for a small model and I think that may be getting a little heavy. I have flown a 20" WS at 10oz/ft2 and it wasn't too bad but was fast with a corresponding high stalling speed.

Vac formed spats may be a help as you suggested.

John
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kaintuck
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« Reply #4 on: November 17, 2020, 09:19:09 AM »

37"...IM ready to test her~ minus the spats/pants. if we get a good flight, then i'll vac form the nose, spats n pants. if she's to fat...then I may rebuild the wing as the plan said....no ailerons..........or just take my radio out and give her to a friend for a .09 gas job..........THAT would be a racer!!!!!!

marc
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kaintuck
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« Reply #5 on: November 18, 2020, 11:21:30 AM »

WITH the needed nose weight...she has grown to 24oz........... Cry
we will see what my friend can do......if nothing else, I will swap that little electric, put a bigger motor and batt.and have a real 'racer'............

back to the drawing board.........
marc
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kaintuck
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« Reply #6 on: November 20, 2020, 02:19:19 PM »

26oz ready to fly Angry
IF she flys...I will call her the 'Pig'.....I'm kinda thinking the motor will need swapped out for a powerhouse....and we then can rip around the sky's....and when she gets totaled out....I will build a mig 3 for the radio gear.....not in love with this pig.....
https://ibb.co/LDK0s11
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OZPAF
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« Reply #7 on: November 20, 2020, 06:01:31 PM »

Marc - does it have built up tail surfaces or are they solid sheet? You may be able to loose some weight back there.

John
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kaintuck
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« Reply #8 on: November 21, 2020, 12:50:21 PM »

John, the plans did call for solid tail feathers...and I cut lightening holes, saved .6gm....but IF I build another...contemporary stick tail feathers, NO sheeting until 1" firewall...box fuse w/o formers, and no ailerons....vac formed pants for landing gear.....
Live n learn....these plans are from last century....were you built them strong, and heavy Roll Eyes
I have some plans for the push-pull Dornier German plan, something in 60" wingspan....you should see the lumber!
THATS on plane in the future.....maybe in another 10yr Tongue
Marc
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