Edward Klepeis wrote:

Dear Paul
    I have a suggestion why not make the 1st. dyno  testing type muffler
out of steel. I know the rotary eng. will do it in a
very short time. just to see if concept  has any merit and to
keep cost down.On center tube would it help for  expansion and
contraction if a small piece of tube was welded into donut front
end with end in muffler expanded  to accept long inner tube. I
am open to suggestion about how to secure inner tube to inside of
tail pipe to keep centerd. I am waiting on dim. and a flange
to be bolted to my 13b motor if anyone can come up with this I can start work.
                                                              Regards
                                                          Ed   Tech Welding

That's is fine with me Ed as we will have to make some changes anyway.
What thickness steel sheet do you have lying around?

We are hashing out the details of the aft support for the center pipe.
Please send me your shipping address as Doug will ship you a flange.

Paul Lamar

This may be a lame idea but I remember some old dirtbike exhaust pipes
had a center tube held at the end with some bolts, nuts and sleeves. A
pair @180 degs (or 120 ) would hold the center tube "centered", right?
If it was supported on the inlet end with a milled doughnut (I have no
other word to use) a groove could be cut, allowing the center tube to
"float" within the grove and be supported at the outlet end with the
sleeves.  Does this make any sence? :)

Phil

 
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