Contemporary vehicles use helical gears and synchromesh devices within the gearboxes, that synchronize the rotation of gears that happen to be going to mesh. This eradicates clashing from the gears and can make equipment shifting simpler. That's, the clutch shaft turns thrice for each revolution of the most crucial shaft. https://beckettttqmg.jts-blog.com/33120120/5-tips-about-automobile-gearbox-you-can-use-today