[NSRCA-discussion] Header coupler

[Larry Odom]

George,
Here's the link to the vendor that has the Octura couplers.  You want the
high temp. silicone reinforced couplers.  They are red.

http://www.rocketcityracing.com/

Larry Odom

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of
glmiller3 at suddenlink.net
Sent: Monday, June 01, 2009 6:07 PM
To: NSRCA List
Subject: [NSRCA-discussion] Header coupler


Hello all.

I need to tap the collective expertise here on the web.

As some of you know, I've been working on a gas conversion of an OS
160....it is running very well and I'm quite happy with the
weight/performance and ease of use.

BUT I'm having a problem with the muffler coupling.

I'm using a Mueller header and an aeroslave carbon pipe.....the header has a
3/4 in outer diameter.

My first coupling material was teflon tubing from McMasterCarr...the "thick
walled" 3/4 inch ID tubing...

This held up pretty well as long as I had the space between the coupled
pipes very small...but I was getting contact between the pipes (that was the
metal "tinging" that you were hearing, Lance)..which eventually caused a
burr on the tube and resulted in a hole in the coupling.....So I made the
gap a little wider 1/4 inch or so and now the teflon coupler is melting
through in a flight or two.....so I need an alternative material.

I remember that we used to use a thick silicone coupling material for
helicopter header/muffler connections but I can't find it anymore...Surely
someone here has some ideas and a source where I can get it.

Let's hear it!

Thanks in advance,

George Miller
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