Present day cars use helical gears and synchromesh units during the gearboxes, that synchronize the rotation of gears which have been about to mesh. This eradicates clashing from the gears and would make gear shifting much easier. The gearbox (also known as a transmission) is a major and important ingredient https://damienhigcw.bleepblogs.com/34605014/little-known-facts-about-automobile-gearbox