Boingers

Bruce Lewis pblewis at mindspring.com
Thu May 7 13:57:12 GMT 1998


At 07:58 AM 5/7/98 -0400, Gary Derian wrote:
<SNIP>
>
>Wankles are great for high power per size, no valves to get in the way of
>flow, lots of rpm (don't forget the rotor rpm is geared up 3x) but as
>Raymond pointed out, by the time a whole car is built, there is not much
>advantage.
>
>Gary Derian <gderian at cybergate.net>
>
Actually the Rotors are geared down by a factor of 3. For each revolution
of the crank (eccentric shaft) each rotor orbits the shaft by 1/3. Hence if
the shaft is turning at 6,000 rpm the rotors are orbiting at 2,000 rpm.

This is why you have a combustion volume equal to the displacement of the
rotors for one revolution of the shaft. Each rotor will disaplace 3 times
it's volume per revolution of the rotor. For one revolution of the shaft
one of the three faces of the rotor have a combustion cycle. Thus on a
rotary the combustion volume per revolution equals the displacement and a
piston engine is 1/2 it's displacement. If the rotors were geared up you
would have a combustion displacement equal to 3 times the displacement or 6
times that of a piston engine.

Bruce Lewis



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