cylinder index question

[Mike Arman]

Cleaning off my desk, I find the discussion of the CI or "cylinder index".

The mark of a true motorsports enthusiast is when the total number of 
cylinders in all the engines owned equals or exceeds the enthusiast's age.

Well I gotta prollem . . . how do we count rotary engines? Is each rotor 
one, two or three cylinders?

(I need to go buy some more cars/airplanes/motorcycles - I've evidently 
been slacking!!! My CI is only 35/57 or 36/57 or 37/57, and that isn't good 
enough!)

Best Regards,
Mike Arman