Description:

Round-up is an amusement ride consisting of a circular horizontal platform with vertical cage like wall around the edge. The platform is attached to a motor on a hydraulic arm. The ride starts out by spinning until the centrifugal force is enough to push riders against the wall. At that time, the friction between the riders' backs and the walls is enough to hold them against the wall. Then, the arm raises the horizontal platform to a vertical position in which riders, instead of spinning horizontally, are now spinning vertically.