The good price and quality pendulum rides are amusement rides based on the motion of a fixed pendulum. The configuration of the ride consists of a gondola, arm, and an axle. One end of the arm is fitted with a passenger-carrying gondola, while the other is attached to the axle. In some models, the arm extends beyond the axle and is fitted with a heavy counterweight. The counterweight is often used when the gondola swings through an inversion. In addition to swinging back and forth, some designs incorporate rotating gondolas and may send riders through a complete inversion. The good price and quality pendulum rides are propelled by one of two methods: a series of DC motors driving the axle or wheels at the base of the station pushing the gondola as it swings by.

What causes the feeling of weightlessness on good price and quality pendulum rides?
At the very top of the good price and quality pendulum rides, riders begin to fall out of their seats. Since a 180-pound person is no longer in full contact with his seat, the seat is no longer pushing on him with 180 pounds of force. Thus, the rider has a sensation of weighing less than his normal weight.