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Message-ID: <01BDE28F.34119490.ed@testelectronics.com>
From: Ed Armstrong <ed@testelectronics.com>
Reply-To: "ed@testelectronics.com" <ed@testelectronics.com>
To: "Lancair [Lancair.List@Olsusa.Com] (E-mail)" <lancair.list@olsusa.com>
Subject: Bolting Electrical Connections through the Fire Wall
Date: Thu, 17 Sep 1998 23:02:10 -0700
Organization: Test Electronics
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          <<  Lancair Builders' Mail List  >>
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>>
Does anyone know where I might obtain non-ferrous (copper alloy?) threaded 
rod material or a solid rod of a bolt diameter that I could thread?  <Scott 
Krueger N92EX>

Copper may be a problem because it is soft. It may stretch and loosen up on 
you with all the vibration and temperature cycling that exists in an engine 
compartment. How about brass bolts. They are stronger. You can get them 
from you local Hardware store, or from McMaster Carr Supply Company. In my 
opinion everyone building these kits should have a McMaster Carr Catalog. 
It is a 3000 page catalog filled with all kinds of hardware, hand tools and 
machining tools. The catalog is free, just call 562-692-5911, or 
www.mcmaster.com or write to la.sales@mcmaster.com

For my wires to the engine compartment, I am going to drill large holes 
maybe 3/4" through the firewall and then cover that with a .050" stainless 
steel plate that has a 1/2" hole drilled in it and is fitted with a rubber 
grommet. Then I will run the wire through the rubber grommet. I am just 
guessing on these hole sizes. First I have to get the wire and find out how 
big it is, then find a grommet to fit that, then figure out how big to 
actually drill the holes for the grommet. If you use this method, you just 
run the wires all the way through, and you don't have to worry about a 
connection which could loosen up. I am debating on whether to use the 
stainless steel sheet metal and high temperature fiber cloth for my 
firewall, or just use the high tech blanket material they are using for the 
Lanciar IV''s.. Also, I think that I am going to put my battery in the 
engine compartment instead of a header tank. I got my carbon fast build kit 
with leading edge wing tanks installed. So, I have plenty of fuel.

Regards,
Ed
Watsonville CA.