"The Big Wheel" (1979) is a smallish, 250cc motorcycle with its rear wheel lifted off the floor and making contact with an adjacent 8-foot, 6,000-pound cast-iron flywheel. When the bike is revved for a few minutes, the big wheel can get going at 200 rpm and subsequently spin for an hour and a half on its own momentum—a steroidal rendering of clothespinning a playing card to a bicycle sprocket to produce the sound of a motorcycle engine. Artist Chris Burden