A manual transmission needs the driver to manually pick out the gears[six] by operating a gear adhere and clutch (which is generally a foot pedal for cars or maybe a hand lever for bikes). Torque converter does the same purpose that the clutch does during the manual gearbox procedure. https://gearbox59135.laowaiblog.com/32802368/how-gearbox-can-save-you-time-stress-and-money