Abstract:
Several embodiments of rear wheel suspension systems for motorcycles wherein the leaf spring is employed that is contained within the suspension arm so as to be protected and yet facilitate servicing. The spring is loaded so as to provide a progressive rate and various damper arrangements are also disclosed employing either rotary or tubular-type dampers.
Abstract:
A motorcycle rear wheel frame is pivotally mounted to the motorcycle main frame. A shaft is positioned on a pivot axis of the rear wheel frame and the main frame of the motorcycle. Rigidly attached to the shaft is one end of a leaf spring. The other end of the leaf spring contacts a transverse cross member of the swing arm so that pivotal movement of said rear frame with respect to the main frame is primarily absorbed by the leaf spring.
Abstract:
A rear wheel supporting system for a motorcycle wherein an end portion of a rear axle--which is supported by the rear end portions of a rear fork--on the side opposite to the side where a rear wheel driving means is disposed, is supported so as to be movable resiliently in the longitudinal direction of the vehicle body.
Abstract:
A bicycle frame assembly includes at least one frame member having a connecting portion, and at least one shock absorber formed as a looped plate member disposed detachably in the connecting portion. The looped plate member has two resilient plate portions each having two opposite ends, and an intermediate portion between the opposite ends. The resilient plate portions are interconnected at the opposite ends. The intermediate portions of the resilient plate portions extend away from each other.