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Old 03-04-2007, 09:24 PM
ibange is offline
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Re: Scratch Built Snowspeeder!!!!!

I am confident it will fly. My father built two 90 size versions of this:

http://members.aol.com/slicklynne/facet.htm

that flew awesome. Not too far off eh? The CG was at the first "bend" back if you look at the pics. That ought to give you some clue where to put yours. As always, better further forward than too far back.

Good luck, can't wait for the video!
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Old 03-04-2007, 10:31 PM
xtremeRCpilot is offline
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MR.INVERT3D';)
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Re: Scratch Built Snowspeeder!!!!!

ibange.. WOW!!!! That is cool. Thanks for the inspiration. I always thought it would be awesome to make a full scale snowspeeder, even if it was just a lawn ornament....


John C.
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Old 03-04-2007, 10:43 PM
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Burn Gas.. Bend wings.
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Kentucky
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Re: Scratch Built Snowspeeder!!!!!

i built that paper airplaen again to run some tests.. at first it fliped over and did the roll of death,, once i got it dailed in it flew great, it will almost flat spin off axis very easy,, gemme a sec ill get some pics
mike
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Old 03-04-2007, 10:56 PM
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Burn Gas.. Bend wings.
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Re: Scratch Built Snowspeeder!!!!!

ok heres a few pics of the glider,, i tryed gettign inflight shots, but seeing im tossing and shooting at the same time nothing worked hha, ill get some tomarrow i designed this for a science project in 11th grade,, the teacher couldnt belave it flew... i thought about a powered version once, might still try it.. cg is about middle of the ship for this one, still needs work tho..
mike
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Old 03-05-2007, 06:51 AM
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MR.INVERT3D';)
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Re: Scratch Built Snowspeeder!!!!!

pitviper51.........Looks cool!!!! I like the concept of the tail fin. I alway wanted to try a hat cam so I could record more of my flights. This way where ever your looking the camera will follow!!!

John
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Old 03-05-2007, 10:52 AM
pitviper51 is offline
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Burn Gas.. Bend wings.
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Kentucky
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Re: Scratch Built Snowspeeder!!!!!

one thing i would highly suggest puting some kinda of vertical fin on it,, even a clear lexan fin would be better then nothing,, i tryed to thing once with out a vert stab, and it would slide so bad haha then spin wildly, tho yours is a bit differnt more of my 2 cents
mike
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Old 03-05-2007, 12:21 PM
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Re: Scratch Built Snowspeeder!!!!!

I think I could be done as is. If changes need to be made I would simply consider making control surfaces like on a b-2 stealth bomber. It has yaw control without a vertical fin.
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Old 03-05-2007, 06:43 PM
ibange is offline
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Austin
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Re: Scratch Built Snowspeeder!!!!!

You know, if you end up with stability problems, as an alternitive to doing non-scale lexan fins and stuff like that - just install some pizo gyros where needed to keep the thing going in the right direction.
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Old 03-05-2007, 10:27 PM
pitviper51 is offline
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Burn Gas.. Bend wings.
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Kentucky
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Re: Scratch Built Snowspeeder!!!!!

i did more test on my paper design,, one things for sure down slow down hahah, im sure this will hold true to the snow speeder.. the b2 controls yaw by use of clam shell airbrakes, would be neat to see on rc
mike
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Old 03-08-2007, 02:54 PM
Ran D. St. Clair is offline
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Night Dragon
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Re: Scratch Built Snowspeeder!!!!!

John,

I love it, and wish you the best...but....
You've got major anhedral there. It's going to want to flip over on its back big time. Be prepared to fly inverted, or better yet, drop an FMA Co-pilot in it.

Good luck

R.D.
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Old 03-08-2007, 03:12 PM
Ran D. St. Clair is offline
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Redwood City, CA
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Re: Scratch Built Snowspeeder!!!!!

John,

Flying wings are normaly closer to 20% to 25% of the area ahead of the CG. I fly a Pizza Box Flyer (Flat plate, 24 x 24 square) and it fly's great with the CG 5 1/2 inches back from the leading edge. That's 23% more or less.

Others have suggested a glider test. It's always a good idea.

Very low aspect ratio designs have a lot of effective dihedral. That's positive yaw to roll coupling. It may help to counter all that anhedral.

Yes, bigger diameter lower pitch prop the better. With all that drag it won't be fast anyway. Don't overload the motor though.

Best of luck.

R.D.
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Old 03-08-2007, 03:17 PM
Road Builder is offline
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Re: Scratch Built Snowspeeder!!!!!

I think it will fly. If is doesn't it will still look really cool crashing Good luck with it.

Jay
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Old 03-08-2007, 07:42 PM
xtremeRCpilot is offline
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MR.INVERT3D';)
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Re: Scratch Built Snowspeeder!!!!!

Quote:
Originally Posted by Ran D. St. Clair View Post
John,

I love it, and wish you the best...but....
You've got major anhedral there. It's going to want to flip over on its back big time. Be prepared to fly inverted, or better yet, drop an FMA Co-pilot in it.

Good luck

R.D.
R.D. ...... My nick name at our feild is " Mr. Inverted " ... My brain seems to function well this way, so I am prepared for the worst . Now getting it to flip back over is the ultimate challenge.. I am just about finished with my glider version and will be taking it out this weekend (hopefully).. Thanks for the good wishes!!!

Jay ... My sentiments exactly!!!! If it does crash I will be posting a special effects video . I need all the luck I can get!!! Thanks.

John Carver
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Old 03-09-2007, 09:09 AM
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How do u fly this thing??
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PA
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Re: Scratch Built Snowspeeder!!!!!

Quote:
Originally Posted by xtremeRCpilot View Post
I need all the luck I can get!!! Thanks.

John Carver
good luck John looking forward to your video
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Old 03-09-2007, 10:20 AM
PLANKBONE is offline
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Do Work
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Tulsa Oklahoma
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Re: Scratch Built Snowspeeder!!!!!

When is this thing going to fly? Must have video!
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