Waagner-Biro produced a new kind of Ferris Wheel in the 1970s through the 1980s that were twin or triplet wheels attached to a swivel bar to raise the wheel into the air. The first installation of a Waagner-Biro double wheel was in 1973 at Hersheypark, and their first installation of a triple wheel was in 1976 at California’s Great America (then called Marriott’s Great America). A second one opened at Six Flags Great America (then also called Marriott’s Great America) nine days later.
These wheels were sold by Intamin on Waagner-Biro’s behalf.
To read more about the double and triple wheels Waagner-Biro manufactured, click here.