IMPROVED BICYCLE SUSPENSION SYSTEM

摘要

An improved bicycle suspension system wherein the suspension system's characteristics change according to whether a rider is in a standing position or a sitting position. In a standing position, the rider's weight is placed primarily upon the pedal assembly (99a) of the bicycle, thereby creating an upward force on the swing arm (32a) which places a first compression force upon a shock absorber (42a). In a sitting position, the rider's weight is also placed on a seat (24a) of a seat frame (22a). This places a downward force on the seat frame which places a second compression force on the shock absorber. Thus, in the sitting position, the combination of the first and second compression forces, measured as a leverage ratio, is placed upon the shock absorber and the shock absorber is more responsive to irregularities in the road. In the standing position, since only a first compression force is being exerted against the shock absorber, the suspension system is stiffer and provides a less comfortable side.