3D model of the transmission of an internal combustion motor. The transmission includes: friction clutch, gearbox. On the IC motor, a gear teeth are also visible on the flywheel, these are used by the starter motor to start the internal combustion motor. 2 types of clutch are visible in the model; one used in cars, the other used in motorcycles (called a “basket clutch”). The manual (or standard) gearbox works as follows: A gearbox works by connecting one of the orange gears with the output shaft (the orange gears rest on, but are not fixed on the output shaft). The orange gears are already connected to a gear fixed on the layshaft, in turn connected to the input shaft (which is connected to the engine), so the closing of the connection to the output shaft will relay the power to the wheels. The connecting is done by means of the internal cone, synchronizer sleeve, external cone & drive dogs. See the 'Purchasing_the_models' link at appropedia's AT_CAD_Team for additional information on the model