|Watch the on-ride POV|
|The sidewinder element|
|Designer / calculations||Ron Toomer|
|Propulsion||Chain lift hill|
|Top speed||54.7 mph|
|Riders per train||28|
Ninja is a steel roller coaster located at Six Flags St. Louis in Eureka, Missouri, USA. It previously operated at Expo '86 in Canada as Scream Machine during the 1986 season. Ninja formerly shared its name with Blue Hawk at Six Flags Over Georgia. Another coaster with the same name still exists, but that is an Arrow Dynamics suspended coaster at Six Flags Magic Mountain.
Originally known as Scream Machine, this ride was first built at Expo '86 in 1986. Construction was originally started by Arrow Dynamics, but the company fell into bankruptcy, so the ride was sold to and finished by Vekoma. Scream Machine opened on May 2, 1986 and closed on October 13 of that year.
Riders are held in with hard, rubber over-the-shoulder harnesses. The ride's layout begins with a left turn out of the station, and then riders climb the 108 foot tall lift hill. Riders turn right, and descend an 80 foot drop into a vertical loop, and then a sidewinder. Coming out of the sidewinder, there is a headchopper moment with the lift hill chain right above riders' heads. Riders then glide into a turnaround before hitting the mid-course brakes. After that, riders turn right, into the double corkscrew element. Another turnaround follows, then a close-to-the-ground left turn, before hitting the final brakes.
The safety sign
Ninja's queue line
A train climbing the lift hill
A train in the station
One of Ninja's trains
- "EXPO'S ATTRACTIONS: WHERE ARE THEY NOW?".
- "Six Flags helps kids love to read". The Daily Journal. November 17, 1988. p. 13. Retrieved December 29, 2021.
- "The New Revolution Virtual Reality Coaster Opens at Six Flags St. Louis".
- on the Roller Coaster DataBase.