Fashionable automobiles use helical gears and synchromesh devices within the gearboxes, that synchronize the rotation of gears which are about to mesh. This eradicates clashing on the gears and helps make gear shifting simpler. Fantastic put up! The in depth breakdown of the differing types of gearboxes as well https://gearbox98631.answerblogs.com/34012089/the-basic-principles-of-gearbox