In this kind of gearbox, each of the gears of the principle shaft are in continuous mesh Together with the corresponding gears with the countershaft (layshaft). As the figure shows, two sliding Pet clutches are provided on the key shaft. Three other gears like initial pace, 2nd velocity, and reverse velocity gear https://automobilegearbox85172.blogmazing.com/33283492/the-best-side-of-automobile-gearbox