Bill Jepson wrote:

Paul, The attached jpeg is a variation on the tangental muffler theme.
The intent is to cool the exhaust system using the exhaust energy. A
outside air source is provided near the front. The design could also be
inverted, (exhaust inside the the can), if the inside tube wouldn't
provide enough cooling. The tail pipe mixing should also make it a bit
quieter.  comments? Bill Jepson

That is a really great idea Bill. I really like it. I think it is
THE soluttion.

Do you mind if I have someone build one?

I'll test it on the dyno.

Ed Klepis,

Can you build a two rotor version of one of these out of .049 316SS ?

How much?

Paul Lamar

Paul, Please be my guest. I make the submissions in hopes of all of us 
having a better product. I hope all works well. You could also easily 
use the square head pipes like the russians did. I personally prefer 
round for strength. I am considering the tangential muffler since I 
don't need a "max tune" on my 20B for the RV-10. 250 reliable hp is my target.
Bill Jepson

 
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