Modern-day autos use helical gears and synchromesh units within the gearboxes, that synchronize the rotation of gears which are about to mesh. This removes clashing of the gears and can make gear shifting less complicated. Manual gearboxes entail the constant part of the driving force through the entire motion. https://spencerhugst.blog2news.com/34418142/the-2-minute-rule-for-gearbox