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04-15-2008, 07:36 AM
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#1 |
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Bad-ass Super Contributer!
 
Join Date: Jan 2007
Location: Newton Iowa, U.S.A
Age: 38
Posts: 233
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Cowl Mods for twin engines
I have a 35% Extra 260 that will have a 100cc twin engine. I have the cowl baffled from the underside of the opening in the cowl to the engine cyinders. My plane also came with another piece of balsa sheet. Do I need to make a top baffle for the top of the cowl opening back to just above the cylinders too? Or will the baffles in front be enough? I put some fiberglass cloth from the cowl to the baffles on the underside with thin ca. Should i use any more bracing as they are pretty stiff now. I also hardened the baffles with thin ca before I painted them to seal the wood. Also should I lay another layer of fiberglass cloth around the cut-outs on the bottom to keep the cowl from cracking? Thanks guys.
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04-15-2008, 06:20 PM
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#2 |
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Bad-ass Super Contributer!
Join Date: Apr 2006
Location: Beaumont Texas
Age: 44
Posts: 339
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Re: Cowl Mods for twin engines
I went to the extra step on my baffling, not many do any more than the lower deflectors..
Rick |
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04-24-2008, 02:12 AM
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#3 |
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Bad-ass Super Contributer!
Join Date: Jan 2007
Location: Newton Iowa, U.S.A
Age: 38
Posts: 233
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Re: Cowl Mods for twin engines
Here are some pictures of my baffles I built from 1/8 lite-ply and 1/64 ply.
Last edited by rceagle1a; 04-24-2008 at 05:39 AM. Reason: ADDED PHOTOS |
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04-27-2008, 11:29 PM
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#4 |
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Bad-ass Super Contributer!
Join Date: Apr 2006
Location: Beaumont Texas
Age: 44
Posts: 339
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Re: Cowl Mods for twin engines
Baffling looks very nice.. It should really cool well..
Rick |
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