SIG Kobra Tapered trailing edge - RCCanada - Canada Radio Controlled Hobby Forum
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Old 02-01-2009, 09:28 PM   #1
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SIG Kobra Tapered trailing edge

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Tonight I start bulding a Sig Kobra kit. I installed the ribs on the main spars.

The instruction is asking to taper the leading edge per attached drawing. I think it will add some washout to the wing. but the instruction doesn’t say if the tapered side should installed toward the bottom or top of the wing.
I believe the tapered side should be glued to the bottom of the wing to eliminate tip stall.

I would like to get a second opinion.

Also I am going to build it following the instruction without any modification. I am willing to get advice to enhance the building and the airplane performance as well.


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Last edited by bavl; 02-01-2009 at 09:31 PM.
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Old 02-01-2009, 09:40 PM   #2
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Re: SIG Kobra Tapered trailing edge

I'll give this a try. First of all, the washout is usually controlled by the trailing edge of the looking downon your wing from above, the trailing edges would be raised by
one or two degrees in relation to the lead edge. I understand you also have a tapered lead edge due to the design of the airplane. The tapers should be the same on the right and the left. Your plane does not have a whole lot of wing area, so try to minimize weight thru your build.


Last edited by cassat; 02-01-2009 at 10:12 PM.
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