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  #1  
Old 06-21-2022, 07:52 AM
pierre smith's Avatar
pierre smith pierre smith is offline
 
Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,931
Default Hole in firewall

Guys, I have a 2” hole in my RV-12 firewall for the UL engine’s computer plug. The wire bundle is about 1” in diameter.


What’s the best (approved) way to seal the hole and render it fireproof?

Thanks,
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Air Tractor 502/PT-6
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  #2  
Old 06-21-2022, 09:54 AM
abwaldal@gmail.com abwaldal@gmail.com is offline
 
Join Date: Jan 2017
Location: Battle Ground WA
Posts: 520
Default

The most obvious way is with a piece of stainless steel riveted with stainless steel rivets. Sealed between with high temp RTV. I did this with one on my RV-6.
Used sheet goods and SS pop rivets.
I polished and rolled the edges But ???!!!
I had followed my 1990 plans as to cutting the holes for what I can no longer remember.
Ok it's not pretty in my opinion but had no choice
At least I can't see the repair from 10,000 feet at 200 mph.
Love these little airplanes and this forum.
Art
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  #3  
Old 06-21-2022, 10:42 AM
lr172 lr172 is online now
 
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 7,277
Default

I would make or buy a 1" split tube/flange in SS. I cover the tube opening with firesleeve and a SS clamp at the wire exit, which I think is good enough, but some prefer to fill the tube with 2000* fire barrier caulk.

Larry
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Last edited by lr172 : 06-21-2022 at 10:44 AM.
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