Aircraft Spruce offers some hardware for this; see their P/Ns 05-16250,
05-16252 and 05-16253. I used their "Cable Safe II" which is a split
fitting that allows it to be used with the choke and throttle cable
assemblies for the 914. Unfortunately the "Adapter" P/N 05-16251 that makes
it possible to use with 3/16 inch diameter cables is NOT split so I had to
use that handy Dremel to cut the adapters in half (longitudinally).
These fittings are aluminum but much better than rubber grommets for a
firewall pass through.
When I sought factory assistance, Neville suggested that instead of
penetrating the SS firewall I should route the cables over the landing
gear/engine mount frame and then use lots of RTV to seal the gap. Since I
would have had to remove so much of the phenolic (or whatever it is)
firewall to make this work I decided to use the aluminum Cable Safe method
instead.
The @#$%
&* SS firewall is one of those problem areas where it seems that
everything interferes with everything else. I strongly recommend you check
out Tony Krzyzewski's web site at http://www.kaon.co.nz/europa/index.html so
you can benefit from his experience. I have found that just about every
factory induced problem (and not just with the @#$%
&* SS firewall) that I
had was already experienced by Tony. Unfortunately I sometimes discovered
his solution only after independently doing the same thing.
Best regards,
Rob Housman
A070
-----Original Message-----
Behalf Of clevelee@cswebmail.com
Subject: Going through the stainless portions of the
firewall
Collective wisdom -
I have not yet purchased the manual for the engine installation (doing the
Jabiru 3300). My question deals with the best way to handle running fuel
lines,
cables and wiring through the Stainless Steel portions of the firewall.
As an example, the rudder cables go through a slot in the SS portion of the
firewall. The rudder cable slots are fairly large (allowing for the
nicopress
sleeve and tails on the thimbles) Are these 'gaping holes' acceptable?
Which of the SS panels are people running their cables and fuel lines
through?
Are regular rubber grommets oK in metal that could reach fairly high
temperatures in the event of an engine fire?
Cleve Lee
A198 Mono XS Jabiru 3300
Detroit, MI
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