That's how 216's and splash-oiler 235's managed to pull the big rigs around- - - -Brownie transmissions, 2-speed rear ends, and gear ratios that allowed the engine to stay in its best torque range regardless of road speed. My 55 HP Massey-Ferguson tractor does the same sort of thing with a 3 speed trans, a high and low range, and a fluid coupling between the engine and the manual clutch sort of like an old Dodge Gyromatic. The fluid drive can be locked out for regular direct-geared chores or enabled to give more pulling power.
Jerry
