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It is sometimes nicknamed "the cages" or "the eggs". Its shape is similar to that of a Ferris wheel, but with seats that are enclosed and rock and roll as the ride turns. If the rocking builds sufficient momentum the seats will flip upside-down and end-over-end. There is usually a wheel inside that participants can use to lock the seat and prevent it from rocking. This can be used to make the ride less scary by ensuring that the seats don't rock too much; or to make it more intense by locking the seats at crucial points in the ride's revolution, causing the seats to flip upside down and spin erratically. The minimum rider height requirement is 36 inches.
In the UK many of these rides are still traveling and most were imported from the US in the 1980s. Some of these traveling examples have had their standard 'egg' shaped cages replaced with front-facing open cars. These rides are known as 'sky dancer', 'hi impact' and sometimes colloquially as an 'egg roller'. The ride packs down onto one trailer as the center pole folds down on a hydraulic ram. The arms all fold inwards and the cages are unbolted from them and secured to the side of the trailer. The paybox usually sits on the rear of the trailer.
This ride can be found in various amusement parks throughout North America including:
- Santa Cruz Beach Boardwalk in Santa Cruz, California
- All Star Adventures in Wichita, Kansas
- Arnolds Park Amusement Park in Arnolds Park, Iowa
- Enchanted Forest Water Safari in Old Forge, New York
- Lakeside Amusement Park in Lakeside, Colorado
- Oaks Amusement Park in Portland, Oregon
- Sylvan Beach Amusement Park in Sylvan Beach, New York
- Thomas Amusements in Newfoundland and Labrador, Canada
In 2016, the door to one of the cages opened on the ride at the Morton Pumpkin Festival.
- Lynn, Capi (August 21, 2008). "From the sky to the midway, it's been a wild ride". Statesman Journal. Retrieved September 13, 2011.
- "Santa Cruz Beach Boardwalk Amusement Park Thrill Rides".
- "Go-Karts, Miniature Golf, Bumper Boats, Video and Redemption Games and more! - All Star Adventures". www.allstarwichita.com. Archived from the original on September 13, 2010.
- "The Rides".
- "Midway Rides at Sylvan Beach Amusement Park".
- "ABOUT US - Thomas Amusements | amusement park | rides |family activities | Newfoundland".
- Luciano, Phil; Kravetz, Andy (September 19, 2016). "State wonders: Why did safety door fly open on Morton carnival ride with little girl inside?". Journal Star. Retrieved September 23, 2020.
|Wikimedia Commons has media related to Rock O Plane.|
- Rock-O-Plane page at Ride Extravaganza 
- Rock-O-Plane page at All The Fun of the Fair 
- Rock-O-Plane page at Kansas Based Carnival 
- Rock-O-Plane Pictures at Ultimate Rollercoaster