I wonder if anyone can shed some light on this issue. I had assumed that
the rotary would have considerably less torsional vibration than a
piston engine -- for a number of reasons -- but I have heard this may
not be so.

Also, how does the single-rotor engine fare in this regard?

Regards,

Gordon Arnaut
Ontario, Canada.


The two rotor is better than a four cylinder. About the same as a six cylinder.
The one rotor is a real beast. See the attached graphics.

Paul Lamar

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