pwmac(at)sisna.com
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 Posted: Sun Sep 09, 2007 3:45 pm Post subject: Firewall penetrations |
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| Quote: | http://www.aeroelectric.com/articles/Firewall_Penetration/firewall.html
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This link shows one how to do a good penetration. Do a Google search
and find commercially available ones that are easier to use than the
DIY method that Bob shows.
The fundamental purpose of the penetration is to let the cable, wire
etc. pass thru the stainless steel firewall using something that will
not let flames enter the cockpit. Thus the use of stainless steel
penetrations are the norm. They are packed withal sorts of things
like silicone scat material, fiberfrax, high temp silicone RTV, etc.
I have seen HD SS bathroom grab handles, AN fittings, and custom made
SS tubing.
I built some to the gadgets that Binglils shoes in his book. It took
way to much time but now I have them. They are copies of what Cessna
and other TC planes have used for years.
Really the use of any kind of rubber is very bad practice since it
will go poof at the first sign of flames.
Be safe, Paul
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