国 上泽充大¥ Where can we find gears? SHANCAAI IAD TONG UNVERSIE 圈上泽大学 Where can we find gears? Gear Selector Fork A manual transmission is essentially a set of compound FROM ENGINE gear trains in which the driver selects the gear ratio.2 Where can we find gears? A manual transmission is essentially a set of compound gear trains in which the driver selects the gear ratio. Where can we find gears?