most efficient speed for Wuma gear reduction motor

Wuma gear reduction motor to be very smooth in operation—both upon starting from a stop and in gear changes—but lose some efficiency (and thus fuel economy) due to the slight “slip” of the fluid-filled torque converter and driving the hydraulic pump that operates the clutch packs.
shaft mounted speed reducer can be kept at its most efficient speed while the transmission adjusts to changes in load or road speed. the transmission can adjust for small changes in road speed while the engine is kept at a consistent rpm for best fuel economy.