Todd Carrico wrote:

<snips>

Todd Carrico wrote:

I would think that port timing were more critical with higher RPM.  I am
talking 10k plus.

<snips>

Don't know where you are getting rotors light enough to go to 10K
plus Todd.

Paul Lamar

No, no I was only agreeing that port timing is probably not critical, even
at 7500 RPM.

2 cycle cart races spend a lot of effort on port timing.  This is similar to
the cam on a pushrod engine (loosly).  The 2 Cycle racers turn some incredible
RPM's we are not.

tc

Here is a picture of Dennis Hayes peripheral port rotor housings and some 
others. These are again different than Jim Mederers collection.

Paul Lamar
 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org