A variable gear assembly has a cam gear with a plurality of {HEAD ~ teeth} of varying size and {TAIL ~ configuration}, and a rotatably mounted roller gear has a plurality of rollers for meshing engagement with the teeth 
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A variable gear assembly has a cam gear with a plurality of { HEAD ~ teeth } of varying size and { TAIL ~ configuration } , and a rotatably mounted roller gear has a plurality of rollers for meshing engagement with the teeth
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH