There are a few turbo's floating around australia.
You sit in a fairly flat circle and the door with harness closses on you. Like the zipper.
It starts to rotate like a ferris wheel, then the entire base starts to rotate in a circle like a merry go round. When you get to the top you are facing the sky and when your at the bottom your either sitting upright or facing the ground. Kind of like the zipper. The cariage free swings from left to right and all the way over with the weight of the guests and the movement of the ride.