Common gearboxes generally have two sets of gears: input and output. the input & the output. The enter gears are preset on the countershaft, creating them single models. It drives the individual gears on the principle shaft, which rotate freely about the bearings. Because both pinion and synchromesh models https://gearbox19741.madmouseblog.com/14279503/the-definitive-guide-to-gearbox