Ken Powell wrote:

Paul,
I was just thinking about my earlier msg and realized that I didn't say
exactly what I meant.  Bill's design appears to use dynamic tuning
between the rotors, but what I meant to say is that wouldn't it be
better to match the inside ports into one chamber and the outside ports
into another chamber - I think that this is how Tracy does it and that
is how I interpreted the earlier posts here.  What does everyone think?

Ken Powell

Me myself would keep it simple the way Power Sport did it. Individual
pipes into a plenum. Mazda also used this on the Lemans winning engine
sort off. No "dynamic chambers". If you do it this way make sure you
have a bell mouth on the pipes. Power sport said that alone was
worth about 5% in add. HP.
 
Paul Lamar
 
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