Patent ID: 8678938

Claim:
A motorcycle comprising: a frame; a rear wheel rotatably coupled to the frame; an engine supported by the frame and configured to drive the rear wheel, the engine having a crankshaft; and a compensator assembly coupled between the crankshaft and the rear wheel and configured to dampen impulse loads between the crankshaft and the rear wheel, the compensator assembly having, a shaft extension rotatably fixed with respect to the crankshaft, an input member rotatably fixed and axially slideable with respect to the shaft extension, the shaft extension and input member forming a first interface therebetween, an output member driven by the input member with a torque-buffering interface, and a retainer rotatably fixed to the crankshaft and configured to axially retain the input member and the output member thereto, the retainer and output member being rotatably coupled to one another forming a second interface therebetween, and wherein the retainer includes a passageway extending between a distal end of the retainer and at least one of the first interface and the second interface.