Patent ID: 8225897

Claim:
In combination with a motorcycle which has a front wheel and a rear wheel mounted on a frame, said frame including an upper steering plate and a lower steering plate, a steering stem which has a longitudinal center axis known as the steering axis, a handlebar assembly is mounted on said upper steering plate and stem assembly with pivoting occurring about said longitudinal center axis, said handlebar assembly for turning of said front wheel within a horizontal steering angle which will steer said motorcycle to a leftward direction and to a rightward direction, a fork assembly connected to both said upper steering plate and said lower steering plate and stem assembly and said front wheel, the improvement comprising: a constant velocity joint mounted on said frame, said constant velocity joint to receive power from a motorcycle motor, said constant velocity joint having an output shaft having a center axis, said output shaft being connected to said lower steering plate and stem assembly, a joint housing having an internal chamber, said joint housing connected to a first end of said output shaft, a series of balls arranged in a circle that transmits power from the outside to an inside drive star which is connected by splines to said output shaft located within said internal chamber and drivingly connected to said joint housing, said balls connecting with said output shaft, said joint housing to be rotated by power from said motor, said constant velocity joint being mounted directly below said steering stem, said constant velocity joint containing said series of balls running in a circular plane, said plane being centered on said steering axis both horizontally and longitudinally whereby not only will power be transmitted from said motor to said rear wheel but also said front wheel; a continuous chain connected between said front wheel and a sprocket engaged upon a splined exterior surface of a sleeve, said sleeve having a splined axial passage engaged upon a cooperatively splined exterior of a second end of said output shaft extending from said constant velocity joint to cause driving rotation of said front wheel; a circumferential relief formed in said second end of said output shaft between said sprocket and said constant velocity joint, said relief providing clearance for a deflection of said center axis of said output shaft with said axial passage, said deflection providing means to prevent interference with steering of said motorcycle when traversing bumps; and an inner side plate and an outer side plate with said chain running therebetween wherein said inner side plate runs on a hub and said outer side plate runs on an axle.