3D model of a manual (or standard) gearbox. 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.