Lynn Hanover wrote:

For the inner (Compression) ring I use the stock ring, or 18 gauge Teflon
covered aircraft hook up wire. Again with a very tiny bead of silicone in the
groove. The joint should be even with the intake port. Another dab of
silicone over the joint. For bridge ported engines, I take a sharpened punch
and stand up a burr in the floor of the inner groove to prevent the "O" ring

>from oozing into the "J" port. Again, a drop of silicone at each end of the

ring and along the remaining aluminum rib to keep the water out. Bill Koch
runs in GT-2 with a 13B, and he just uses regular 18 gauge hook up wire. Not
even Teflon. The silicone is the trick. After the case bolts are torqued,
squirt some oil into both housings and turn the engine over a few times. The
silicone scraps will come out the exhaust port. No leaks yet, since 1980.

Fred Osborn wrote:

Am I confused ? Subsequent postings seem to indicate that
some think that
Lynn is using solid copper Teflon insulated wire. I was
certain he was
writing about stranded wire. I don't think solid wire is
used in aircraft
applications because any nick coupled with vibration will
cause the wire
to fail. Stranded wire would make sense because it can give
and with the
Teflon cold flow + silicone fill the groove nicely. As I
remember Kapton has
much less cold flow and probably would not work very well.
Years ago,
Teflon insulation was not allowed in spacecraft because of
its cold flow.

FWIW. Much of present day Teflon is a reduced cold flow
formulation so it
might not work as well as Lynn's older wire.

Fred O.

The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2003 All world wide rights reserved.