Regular gearboxes usually have two sets of gears: input and output. the input & the output. The enter gears are set about the countershaft, generating them single models. It drives the person gears on the main shaft, which rotate freely on the bearings. Spur and helical gears are used https://travisbbzwv.blogpixi.com/34049366/a-simple-key-for-gearbox-unveiled