an internal ring gear carried by said rotor and meshed with said timing gear, said ring gear having a number of {TAIL ~ teeth} greater than {HEAD ~ said predetermined number} whereby a crescent shaped gap between said gears will exist 
an internal ring gear carried by said rotor and meshed with said timing gear , said ring gear having a number of { TAIL ~ teeth } greater than { HEAD ~ said predetermined number } whereby a crescent shaped gap between said gears will exist
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH