Archie wrote:

http://www.nova-racing.com/nova_gb/index.htm

Snips...

         Fresh gases initially flow through one end plate, stream through the rotor, bearings and
         shaft cooling and lubricating, before passing into the combustion chamber through the
         opposite end plate.

         At ~5500rpm a negative-pressure controlled butterfly valve opens a second port feeding
         additional gases directly into the combustion chamber.

         These cold gases give rise to the enormous power of the XR8. The untypical processes in
         the engine result in very long control times that positively influence exhaust gas values,
         which are typically under 1% of comparable 2-stroke units and equal to the best 4-stroke
         levels.

This sounds like both side ports and peripheral ports. There appears to be
tremendous HP potential for this approach. Mazda could use the same idea and still
have good EPA fuel consumption and low smog  numbers on the EPA driving cycle. 

Something like 170 HP per rotor is possible normally aspirated at 8500 RPM 
with the light weight RX8 rotors. That is 340 HP for a two rotor for the 
arithmetic challenged. At 6000 RPM it could be as much as 240 HP normally 
aspirated. I can hardly wait for Richard to get his peripheral port working 
on his one rotor in addition to the just the one side port he is running on now.

For aircraft use you could take off on both and fall back to the side
ports for cruise.

Paul Lamar
 
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