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Old 01-28-2007, 10:50 AM   #1
fun_fly_3d
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Default Biplane wing bracing. HELP!!

Guys,

i want to know how you are bracing the wings on your foam biplanes! i am scratchbuilding one and this is my only problem rightnow. do you all use carbon cross-bracing or are carbon spars and carbon reinforced struts ok? Thanks in advance for your help!!

Brian

P.S. Pictures are awesome as i can usually figure it out just looking at some pictures! Thanks!!
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Last edited by fun_fly_3d; 01-28-2007 at 11:33 AM. Reason: this is a Foamie biplane
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Old 01-28-2007, 11:28 AM   #2
flyin woodbutcher
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Default Re: Biplane wing bracing. HELP!!

this is what happens when you dont brace the wings.
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Old 01-28-2007, 11:32 AM   #3
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Default Re: Biplane wing bracing. HELP!!

Oh sorry,

I mean foamie biplanes

brian
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Old 01-28-2007, 11:37 AM   #4
flyin woodbutcher
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Default Re: Biplane wing bracing. HELP!!

HAHA I knew. Here is what you are looking for
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Old 01-28-2007, 11:42 AM   #5
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Default Re: Biplane wing bracing. HELP!!

Go with foam. Check out the Xcalibur from fancyfoam.com, and try something like that. It's stiffer than carbon, and in crashes will flex rather than punch holes through the wing. Plus it adds wing area both on the wing and in KE.
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Old 01-28-2007, 04:53 PM   #6
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Default Re: Biplane wing bracing. HELP!!

Quote:
Go with foam. Check out the Xcalibur from fancyfoam.com, and try something like that. It's stiffer than carbon, and in crashes will flex rather than punch holes through the wing. Plus it adds wing area both on the wing and in KE.
ya i thought about that Ryguy, but it seems very tricky to do. it also seems like it would add as much weight as carbon by the time you have all the glue and foam installed. I could be wrong, but i just thought that the xcalibur was a very fragile design. I do appreciate your input and will seriously consider doing that. I probably will end up trying all of the ways, since foam is cheap and I need to build at least 3 or 4 for e-fest! I might also end up doing a sratch-build like the xcalibur. Similar design but not a complete rip off. Besides not having the plans, i don't like to steal designs and call them my own. I usually print out a picture of the plane for ideas, and then change wing shape, or add something here and there. Thanks and keep it coming!

Brian
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Last edited by fun_fly_3d; 01-28-2007 at 04:57 PM. Reason: added quote
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Old 02-03-2007, 09:43 AM   #7
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Default Re: Biplane wing bracing. HELP!!

Don't get on a guilt trip for borrowing the strut material. Its all been done by now. I think carbon gets overused some just due to its cool factor. If you hit hard enough is all toast anyway. The Foam is also draggy which seems to be a plus on indoor models.
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Old 02-24-2007, 07:10 AM   #8
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Default Re: Biplane wing bracing. HELP!!

"Borrowed" from the Foamy Factory, enjoy.
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Old 02-24-2007, 09:30 AM   #9
fun_fly_3d
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Default Re: Biplane wing bracing. HELP!!

Thanks waco! I have used this exact method on my mono wing indoor planes. Unfortunately, I get confused when it comes to doing biplanes. I am also going to use carbon rod mostly now until indoor starts again due th the tendency of the fishing line to stretch in any temp. change. it works great for indoor when I build in my house and fly in a heated building. This year I will be bringing it with me on the road and I will fly ing in zero winds and possibly at the hotel . Thanks for you input anyway.

Brian

P.S. I bought a freestyle vrolet at e-fest so I will use the rods on my bi-planes from now on.
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Old 02-24-2007, 11:51 AM   #10
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Default Re: Biplane wing bracing. HELP!!

Biplanes aren't hard, they just take a little more time to thread them. Do an X on each side of fuse, tie corner of the X off at the spars. That way the pressure is transmitted laterally.
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