Abstract: A drive system for providing propulsion forces having predetermined characteristics for a bicycle or the like having a rear wheel manually operable by application of rider generated input forces through pedals mounted on crank arms operatively connected to a crank shaft with cam means operable by the crank shaft and the crank arms, the cam means being designed to variously modify the available input and/or effective output force characteristics in accordance with predetermined desired characteristics and being operatively connected to and driving an oscillator means with bike speed change means associated therewith to provide a substantially infinitely variable selectable range of bike speeds, and rear wheel driving means operatively connected to and driven by the oscillator means and operatively connected to and driving the rear wheel of the bike with bike speed ratio changing means associated therewith to provide for selective multiplication of the ratio of application of available bike speeds in the substa

Abstract: This cambering vehicle incorporates a frame having a steerable front contact engaging a support surface and having three laterally spaced trailing arms pivoted at their forward ends to the frame and with separate rear contacts engaging the support surface. The intermediate trailing arm supports a seat on which the operator may sit while operating the vehicle. Foot rests are secured to the outboard trailing arms allowing the operator to stand on the vehicle and camber steer the vehicle into turns with manual forces applied to the rear surface contact through a shift in weight of the operator through the foot rests. An optional trailer is provided for the vehicle to increase load capacity.

Abstract: A cambering vehicle, having an upright main frame supporting a front steerable surface contact means and having a pair of trailing arms pivoted at one end to opposite sides of the main frame and having rear surface contact means mounted at the free ends thereof, is manually propelled by the vehicle operator who stands on foot rest means adjacent the rear wheels and, while camber steering the vehicle in a first curved path centered to one side of the vehicle, shifts his body weight from the outside to the inside foot so that the mass initially turning on a first radius is forced to turn on a smaller radius to increase velocity and conserve angular momentum. This stroking action is repeated as the operator steers the vehicle in a second curved path centered to the opposite side of the vehicle. The sinuous camber steering and body weight shifting strokes are repeated as desired to produce a net forward travel.

Abstract: A mechanism which automatically disconnects a driven wheel from a drive train in the event of a mechanical failure of the drive train, allowing continued rotation of the driven wheel.