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Achterbahn: Extremeroller (5/31/1983 to 1988)
EXT (5/31/1983 to 1988)
Screamroller (1976 to 1982)
Freizeitpark: Worlds of Fun (Kansas City, Missouri 64161 USA)
Classification: Achterbahn
Typ: Stahl - Sit Down
Status: Operated from 1976 to 1988
Relocated to: Formosa WonderWorld as Spiral
Hersteller / Modell: Arrow / Corkscrew
Kapazität: 1800 riders per hour
 
Länge: 381 m 
Höhe: 21.3 m 
Inversionen: 2 
Geschwindigkeit: 80.5 kph 
Fahrzeit: 1:10 
Elemente: Double Corkscrew
 
 
Historie:

For the 1983 season standup trains were put on the Screamroller's track and the ride was called the Extremeroller or E.X.T. This made the Extremeroller the first looping standup roller coaster in North America. The track and structure were never designed for such trains and this proved not to be a practical in time. Because of this the standup trains were removed and the original sitdown trains were reinstalled.

ACE (American Coaster Enthusiasts) has the standup trains in storage.

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