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Old Aug 16, 2008, 09:18 PM
Where'd my money go?
rawr404's Avatar
VA
Joined Jun 2008
577 Posts
Cool
Scratch Built Flying Wing

I recently put together a scratch-built foamie from Dow FFF (Fan-Fold Foam). Somewhat resembles an Airforce B-2 Bomber mixed with a Zagi with vertical stabilizers. It flies and is fun to fly. I have flown two successful flights. It has a Kline-Fogleman Airfoil (KFm-1).

My Gear:
Servos - S3003 (x2) with Elevon Mixing
-- I used coat hangars for servos rods and glued on scrap fff for control horns.
Esc - 10A Home-made
Transmitter - Parkzone ZX-10
Receiver - Parkzone RA672 4Ch FM 72MHz
Motor - 380 Brushed from Aerobird Challenger with compatible pusher prop
Battery - 7 Cell Ni-MH from Aerobird Challenger
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Last edited by rawr404; Aug 16, 2008 at 09:29 PM.
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Old Aug 16, 2008, 09:20 PM
My plans are in my blog
Rusty-Gunn's Avatar
Kotzebue, Alaska
Joined May 2006
5,416 Posts
Congrats, nice little flyer.
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Old Aug 16, 2008, 09:23 PM
Where'd my money go?
rawr404's Avatar
VA
Joined Jun 2008
577 Posts
Thanks! It was really cheap and easy to build. Gotta love that!
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Old Aug 16, 2008, 09:45 PM
Lower, Lower
bc-slowflyer's Avatar
Penticton,BC, Canada
Joined Feb 2004
1,435 Posts
Nice job.
I can see a number of things that, once changed, would cut your weight down and make it even a better flier.
PM me if you want some ideas.
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Old Aug 16, 2008, 09:48 PM
Flying low is expensive.
pdiddyg40's Avatar
United States, CO, Boulder
Joined Jul 2008
2,398 Posts
looks great. what is the speed range on it?
-P.D.
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Old Aug 16, 2008, 10:21 PM
Where'd my money go?
rawr404's Avatar
VA
Joined Jun 2008
577 Posts
Quote:
Originally Posted by pdiddyg40
looks great. what is the speed range on it?
-P.D.
I don't quite know what you mean by speed range, but if you mean how fast it goes, the max efficiency speed is 14150 RPM. In the air it's kinda a slowflyer, but you can get it going fast at full throttle.
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Old Aug 16, 2008, 10:23 PM
Flying low is expensive.
pdiddyg40's Avatar
United States, CO, Boulder
Joined Jul 2008
2,398 Posts
Quote:
Originally Posted by rawr404
I don't quite know what you mean by speed range, but if you mean how fast it goes, the max efficiency speed is 14150 RPM. In the air it's kinda a slowflyer, but you can get it going fast at full throttle.
yeh, thats what i meant. would it be any faster with a bigger prop? what size prop do you ahve on it?
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Old Aug 16, 2008, 10:28 PM
Where'd my money go?
rawr404's Avatar
VA
Joined Jun 2008
577 Posts
It's the stock 6.5x3 push on prop. I broke the prop today in a not so pretty landing, so I think i am going to try a larger prop. The shaft size is 3mm, so if i get a prop shaft adapter, what would you suggest as a new prop?
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Old Aug 16, 2008, 10:29 PM
Registered User
Arkansas
Joined Dec 2004
121 Posts
What is the general dimensions on your flying wing?

eboggs59
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Old Aug 16, 2008, 10:46 PM
Where'd my money go?
rawr404's Avatar
VA
Joined Jun 2008
577 Posts
Quote:
Originally Posted by eboggs59
What is the general dimensions on your flying wing?

eboggs59
Wingtip to Wingtip - 36.5 inches
Vertical stabs- 4 inches high
KFm1 Airfoil - Ends 7.5 inches from nose and you can see from picture, it is almost parallel to the trailing edge
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Old Aug 16, 2008, 10:52 PM
mel gibson?
HPIAdam's Avatar
Joined Apr 2008
197 Posts
you were the one looking for an airframe for aerobird parts no? pretty cool
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Old Aug 16, 2008, 10:57 PM
Where'd my money go?
rawr404's Avatar
VA
Joined Jun 2008
577 Posts
Haha! Yep that's me! I enjoy tinkering.
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Old Aug 16, 2008, 11:10 PM
Registered User
Arkansas
Joined Dec 2004
121 Posts
What is the cord length from the nose to your hinge point?

eboggs59
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Old Aug 16, 2008, 11:12 PM
Where'd my money go?
rawr404's Avatar
VA
Joined Jun 2008
577 Posts
Quote:
Originally Posted by eboggs59
What is the cord length from the nose to your hinge point?

eboggs59
12 Inches. The CG is right at the end of edge of the KFm-1 airfoil.
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Old Aug 17, 2008, 06:52 AM
Flying low is expensive.
pdiddyg40's Avatar
United States, CO, Boulder
Joined Jul 2008
2,398 Posts
rawr, it looks like you have plenty of room for a larger prop in some of your pictures. i dont have experience in wings and i really couldnt tell you what to use. i have seen others in the 8x6 range, but i dont know if this could relate to you. Sorry for the
clue-less-ness
-P.D.
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