Pat MacAvoy wrote:
>Also, you asked about rotaries... I think 2.5 is the factor used for
>converting piston to rotary-equivalent displacement. For example,
>my 1.3l rotary is similar to a (1.3x2.5) 3.25 liter piston motor.
>I think this is based on the amount of airflow you get out of each type.
No, 2x is the displacement factor for rotaries since they're
two-cycle vs. the conventional 4-cycle motors the rest
of us use. Therefore they get 2x power strokes per crankshaft
revolution, thus 2x more power for same displacement.
George Emery
gemery@aol.com
http://members.aol.com/gemery
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