Standard gearboxes typically have two sets of gears: input and output. the input & the output. The input gears are mounted around the countershaft, making them single models. It drives the person gears on the leading shaft, which rotate freely around the bearings. Torque converter does exactly the same https://jeffreyikjie.wssblogs.com/33754105/a-simple-key-for-gearbox-unveiled