Typical gearboxes ordinarily have two sets of gears: input and output. the enter & the output. The enter gears are fixed within the countershaft, building them one models. It drives the person gears on the primary shaft, which rotate freely within the bearings. Spur and helical gears are used https://simonqqqnl.targetblogs.com/34273200/not-known-details-about-gearbox