The drive equipment is like most hydraulic systems. The drum shaft is driven by the hydraulic motor through a set of speed reduction gears.
Winches normally have one horizontally mounted drum and one or two gypsy heads.
If only one gypsy is required, it may be easily removed from or assembled on either end of the drum shaft. When a drum is to be used, it is connected to the shaft by a clutch. Another word for gypsy is wanderer. The electric motor drives the unit through a set of reduction gears. A clutch engages or disengages the drum from the drum shaft.