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Jan 19, 2020, 03:14 PM
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GWS F - 15 as a pusher.


I will only be using all the white foam parts of the kit. As a pusher prop job. Couple of questions about the tail surfaces.

1 The plans show a All Flying horizontal stabilizer as 1 way to control it. OR A combination of aileron & elevator surfaces controlling it.............. which for sport ?

The foam parts weigh 14 oz. GWS calls for a GWS brushless 2215 /12 t or a 3008/16 t motor with a 9050 X 3 blade. APC 2 blade is fine.................

I have some good BP H2217-4 3500 kv motors rated at 27amp .... no load amp 1.0 a.... .050 Ohms.... 79 % eff. @ 27 A.....250 watts maximum. Prop to use ?......APC E 5.25 x 4.75....6 volts....20 amps ....16000 rpms.... 13 oz of thrust....75 mph ....All readings are at static. Odd helicopter motors I have around.

High speed vertical is not needed. WOT of 45 should do nicely in windy day to get back to a landing spot.

Thank you.
Last edited by cyclops2; Jan 19, 2020 at 03:40 PM.
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Jan 19, 2020, 07:41 PM
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I should have weighed all the foam pieces out of the plastic bags.


Parts weigh 4.1 OUNCES . & 3.77 S F of wing area.

Now you all know why a 82 year old guy who died legally posts some goofy questions.

Based on the wing loading & LONG body. I am going to use a rubber motor. Why not ? Vertical out of sight launches.

I really do need help !!

I just measured the length I can put in a C F winding tube. 32 " No stress on the foam body that way.

O K Add 1.4 oz for all RC gear. 1 oz for a motor 3/8 oz for a prop. Battery 3 oz. = a 10 oz DF
Last edited by cyclops2; Jan 21, 2020 at 09:04 AM.


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