Park section Southwest Territory Opening date April 29, 1995 Height 30 m Height restriction 1.22 m Track length 1,054 m | Status Operating Type Wood Designer Six Flags Max speed 80 km/h Opened 29 April 1995 | |
Similar Raging Bull, American Eagle, Whizzer, Vertical Velocity, X‑Flight |
Viper is a wooden roller coaster located at Six Flags Great America in Gurnee, Illinois, which opened in 1995. Viper features a layout that is a mirror image of the Coney Island Cyclone and is the only roller coaster ever to be built directly by Six Flags. Viper is also the only wooden roller coaster that has ever carried this name, (all the other Viper roller coasters, both operating and not, have been steel roller coasters). It was built by Rygiel Construction.
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Overview

Throughout the years, Viper's queue has undergone numerous modifications to accommodate additions such as the addition of Raging Bull directly south of the ride and the entrance to the adjacent Hurricane Harbor water park directly west of the ride. Unlike most Cyclone clones, Viper provides a much smoother ride than the original Cyclone.

During its first year of operation, Viper was located in Hometown Square. With the opening of Southwest Territory in 1996, Viper was officially made part of Southwest Territory, where it and Raging Bull are the anchor attractions.

On May 24, 2013, the park announced that Viper would be one of three coasters running backwards for the first time during 2013 season for a limited time along with Batman: The Ride and American Eagle (which wasn't going backwards for the first time) .
Ride experience

Riders enter Viper from Southwest Territory. After winding through an outdoor queue passing under parts of Raging Bull, guests enter the station and board the 30 passenger PTC trains. These trains are very similar to the trains on American Eagle, however, they are painted green to resemble a snake.
Layout

Upon leaving the station, trains make a slight left hand turn, followed by a straight segment of track. This leads into another left hand turn and trains then climb the 100-foot-tall (30 m) lift hill. At the top, the track drops at a 53-degree angle. The maximum speed may vary between 50 and 55 miles per hour (80 and 88km/h) depending on the weather conditions, time of day and the load. Next the train rises into a right hand turn around. This turn around leads to a sharp second drop, before rising over another hill, and passing through a left hand second turn around. The second turn around has a double down element as riders descend another drop into the wooden structure. The ride makes another out and back run, and after the final turn around, hits the brake run, ending the ride.

Viper's overall layout is a mirror image of the Coney Island Cyclone, however, the approach to the lift hill is much longer and the final turn leads into a straight brake run leading directly into the station. The second turn around also is a direct gradual ascent, peaking at the middle, before leading into a double down drop.
Incidents

On June 25, 1997 a 14-year-old Waukegan boy injured his arm while dangling it outside the car. His limb got caught between the car and the platform as the ride reentered the station and slowed to a stop.