Abstract: A self-contained amusement ride designed for use on a mobile unit can be folded into a compact assembly for highway transport. During operation of the ride, an angularly off-set undercarriage allows the front portion of the mobile unit to support the entire weight of the ride on the ground with essentially no weight on the rear wheels. A pivoted kingpin plate allows transport with adequate ground clearance and a retractable landing gear on the front end of the mobile unit provides for raising and lowering the mobile unit for connection and disconnection from a prime mover. Hydraulically assisted lockable supports tie the main sweep arms to the mobile unit during transit.Pins with integral sliding hammers are provided to perform certain locking and pinning functions during assembly and disassembly of the ride.