Fashionable automobiles use helical gears and synchromesh equipment inside the gearboxes, that synchronize the rotation of gears which have been about to mesh. This eliminates clashing of the gears and will make gear shifting simpler. The Pet dog clutch slides on the most crucial shaft to rotate with it. https://gearbox19639.ziblogs.com/33904797/the-basic-principles-of-gearbox