GMV offer several different car frames which are adapted to different conditions.

Direct driven (1:1)

Means that the jack that drives the lift is connected directly to the car frame and presses the lift upwards.

Indirect driven (2:1)

Means that you place a pulley on the jack and use ropes, which pull the lift up. 

This type of car frame is geared between the jack’s speed and the car’s speed which is 2:1.