Synchromesh gears are typically employed by modern day autos during the gearbox, which synchronizes the rotation of gears which have been messed. This type of gear removes the risk of gear clashing and tends to make the shifting system easier. This gearbox is someway comparable to a constant mesh gearbox. https://emilianoloxyv.blog2freedom.com/34148051/automobile-gearbox-an-overview