The GMP SideWinder 70605 is a trailer mounted pull and assist capstan winch, mounted on a sturdy all-steel fabricated chassis. It is equipped with torsional suspension axles, stabilizing prop legs, a front telescopic jockey wheel and a tow bar with a Lunette Ring. The unit is easily pulled by a standard pickup truck.

The power source is a gasoline engine which drives the fixed displacement tandem mounted hydraulic pumps. The hydraulic pump is attached to the engine via a bell housing and flexible coupling. One pump powers a hydraulic motor, through an in-line planetary gearbox, to the capstan. The second pump drives the rope take-up drum again through a hydraulic motor. The hydraulic oil tank is fitted with double filtration protection, sight glass and filler/breather.

Controls are operator friendly and very simple to use. A spring centered lever controls the direction of rotation of the capstan, while a detented lever engages the take-up drum drive. A control knob is used to limit the rope/cable tension using the panel mounted tension indicator.

The rope take-up drum is removable and can be split to enable removal of rope. The capstan can be rotated through 90° on a swivel bracket from the inline working position to the transverse transit position when in tow. When the winch is in the working mode the rear props are extended out of the chassis to provide greater stability.