Typical gearboxes generally have two sets of gears: input and output. the input & the output. The input gears are fastened on the countershaft, creating them solitary units. It drives the individual gears on the leading shaft, which rotate freely on the bearings. Spur and helical gears are used https://paxtonsttro.shoutmyblog.com/32979005/details-fiction-and-gearbox