The clutch connects/disconnects the motor and gearbox, plus the gearbox adjustments rotating pace via distinct gears. This type of gearbox options driver and driven shafts that share the middle line (coaxial) but work independently. Electrical power transmission happens by using gears mounted on a shaft parallel for the coaxial axis. https://manuelmnlki.answerblogs.com/33870527/little-known-facts-about-gearbox