Richard Konnen wrote:

Paul,
  Just a couple of questions. Why wouldn't you put the third plug at the trailing end. Also is there a source for dimensionsas shown and if there are what
might be the norm and what would be the most extreme?
Thanks,
Richard Konnen

The best position of the plugs has been extensively investigated by a lot of
companies that have attempted to manufacture rotaries in the past.
Some improvement can be had but they are in the low single digits I suspect.
I think the third plug on the Leman engine was worth only 3% better
BSFC as I recall. That is not to say that somebody will never discover
a better configuration sometime in the future. Rotary engine development
is in its infancy with only 2 million built. Piston engines number
in the trillions I am sure.

Paul Lamar
 
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