Present day automobiles use helical gears and synchromesh units in the gearboxes, that synchronize the rotation of gears which might be about to mesh. This removes clashing of your gears and can make equipment shifting simpler. The gear ratio is definitely the ratio in between the enter and output gears. https://gregoryqvuso.blogolize.com/the-fact-about-automobile-gearbox-that-no-one-is-suggesting-73176291