Motorized two-wheeled vehicle construction with power unit swing system

摘要

A motorized two-wheeled vehicle construction having a power unit swing system comprising a vehicle body frame connecting a front head pipe to the lower surface of a seat unit for a driver, the rear side of the frame being provided with a curved lower elbow portion to which a power unit is pivotably or swingably attached. The power unit comprises an internal combustion engine and an integral power transmission mechanism extending rearwardly from the engine to one side of the rear wheel to drive the same. The power unit is swingably attached at its front end to the curved lower portion, and a shock absorber connects the rear portion of the power unit and the lower surface of the seat unit.