Bill Freeman wrote:

                     SNIP

Actually it is 2:3. No. You would not have a practical rotary. It must be 2:3
other ratios work but it would probably take a billion dollars and 30 years to
develop it.
Seal angle with the rotor housing becomes unfavorable with the following
ratios 3:4 and 4:5. The combustion chamber shapes are even worse.
1:2's don't work as they need external pumping.

Thanks as always.

Bob
Rotary Novice

The diagram is from R.F. Ansdale book on the rotary The Wankel RC Engine.

Paul Lamar

The far right version on row two is (IIRC) one "power"
lower than the oil pump design I referred to recently,  but
very similar.

Bill

 
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