Principles of Operation: Overview

When the electromagnetic clutch is engaged, torque flows through the input shaft to the front planetary gear assembly and outward to the ring gear and to the upper output shaft. Torque also flows through the front planetary gear assembly to the overdrive sun gear and outward to the upper drive sprocket. The torque flow continues from the upper drive sprocket through the drive chain to the lower drive sprocket and to the front output shaft. The electromagnetic clutch provides the connection between the ring gear and the overdrive sun gear.