Hi  Paul

There are allot of nice technical papers, here are some math basics

(but I don't know them for the practical engine)

http://en.wikipedia.org/wiki/Epitrochoid

Put in the numbres 100 50 25 and press start


http://www.mekanizmalar.com/epitrochoid.shtml

http://curvebank.calstatela.edu/reu/reuleaux.htm

Gino De Baerdemaeker

Farman Engineering bvba

Cool! Thanks!

Paul Lamar

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