I am sure that Felix Wankel and all other early adopters including Mazda would have had  no idea that 650 HP would be extracted out of a 200 pound, two rotor, Mazda engine.

One thing has become crystal clear. Spark plug cooling is a major issue in high HP Wankel's. Jim Mederer has done wonders in addressing this issue.  However the time has come to rethink the cooling system to make it better.

This is the way I would do it. Put the cold water in the centre housing near the spark plugs. Let it flow fore and aft and come out of the centre housing on the other side.

The center housing has another job and that is scavenging the hot cooling oil out of both rotors.

The easiest way to do that is run the engine plugs up and rearrange the oil drain backs. For an aircraft that makes a lot of sense. That way the hot water, hot oil and the exhaust comes out the bottom of the centre housing.

The turbo can also be under the engine. Fuselages are higher than they are wide because sitting people are higher than they are wide.

This concept not done yet. I have a lot more work to do when I find some spare time from the ignition biz.

Thanks to Larry Childs for the excellent rotor housing 3D's.

Paul Lamar


BTW a Super Cub with this engine would set world records for STOL take off and landing.




Paul, I was reading an article a little while ago, about putting quantum particles (silver or gold or copper or something) into the water and vastly improving the thermodynamic efficiency of it (the water). Something in the region of 50% if I recall correctly, it could be your answer to your cooling problems. If you think the idea has merit I'll try and find the article, I think it was in New Scientist mag.
   Chris. Hoskins

I would be very interested in that.


Paul Lamar

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