Gordon wrote:
   " Here is what actually happens inside the rotary engine:

    Each intake event is 650 cc, not a molecule more. Each compression
    event is 650 cc (before compression), not a molecule more. Each
    combustion event is 650 cc (after expansion), not a molecule more.
    Each exhaust event is 650 cc not a molecule more."


ABSOLUTELY TRUE, BUT in the marine world "displacement" is the volume of
H2O that would fill the hole if the boat were removed. To a chemist
"displacement" is the number of CC's that a beaker holds. But in the
automotive world "displacement"  IS ALWAYS REFERENCED TO CRANKSHAFT
REVOLUTIONS. In a 4 cycle single cyl piston engine there is ONE complete
4 cycle event per TWO crankshaft revolutions. In the 4 cycle single
rotor rotary engine there is ONE complete 4 cycle event in........( and
Gordon needs to account for this )... THREE crankshaft revolutions. Yes,
it's certainly 650 cc, not a molecule more, but it's processing that
650cc charge longer in terms of crankshaft revolutions.......RPM's of
the crankshaft is the basis for engineering calcs for HP, torque, even
turbocharger sizing  :)


    "But people who are concerned with what is really going on inside the
    engine, not the EQUIVALENT compared to a piston engine, will stick
    to the REAL displacement.

    This is the real physical displacement of each rotor flank and it is
    650 cc. Period End of Story."
    Regards,
    Gordon.

End of story???  This will outlive the Tales of the Royal Family !
Dave M

It is cast one each rotor 13B. 13 + 13 = 26
Thanks to blake Lewis here at Sun n Fun

Paul Lamar


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