Quote Originally Posted by wbute View Post
They still use the drive on hoists. They have different used to the other style. The drive on style limit what you can do because the car is still sitting on its wheels. The drive on ones are good for rego checks and oil changes etc.
There is usually two parts to a 4 post hoist operation. The ramps/elevating mechanism and another (usually a) ratchet mechanism that allows two lengthwise inner beams to be slid into position under the correct area of the suspension/underbody. There are small, usually rubberised blocks that then slide forward or rearward on top of the inner beams to the correct support points, the ratchet is engaged and the ramps then descend away from the wheels, allowing them to spin. This is usually done at around chest height and the ramps become a very useful bench to work right up next to the brake job etc.

We had an ancient Molnar 4 poster and a couple of Tecalmit 2 posters at my old workshop.