An interactive force transmission that can be produced in a variety of modes. The most common mode would couple a planetary gear system (12) to a torque drive (10) with a hydraulic fluid intermediate substance (26). An outer counter-rotation device (11) and a reverse action is added. The reverse action is achieved by stopping a sun gear (38) which varies the ratio and rotation of the wheel gears (34-35) and the sun gears which results in the overturning of the output gear (32) and a reverse action. The interaction of forces from the thruster (25) through the hydraulic fluid (26) and the resisting loads in the receiver (28) result in a turning force on the receiver (28), which, in turn, furnishes variable speed into the planetary gear system (12) in such a manner as to produce a variable output force on the planetary gear system (12).