Common gearboxes normally have two sets of gears: enter and output. the input & the output. The input gears are mounted to the countershaft, building them solitary models. It drives the individual gears on the key shaft, which rotate freely within the bearings. Torque converter does a similar function https://gearbox31852.creacionblog.com/33620563/5-tips-about-gearbox-you-can-use-today