Tulderhof developped its own winch engine: the TW 450. This engine is equipped with a universal drum, which can be used with lifting belts and steel cables.
What are the big advantages of this engine?
dust- and waterproff
the possibility to hang the engine upside down
externally adjustable
a potentiometer with a double bearing
Preferable you should place the winch engines in the middle of the stable, so the forces are equally divided. But this is not a necessity.