Nemesis is an inverted roller coaster located at the Alton Towers amusement park in England. The ride’s concept and layout was devised by designer John Wardley. It was manufactured by Bolliger & Mabillard (B&M) and opened in March 1994. It is located in the Forbidden Valley area of the park, adjacent to Air, a flying B&M roller coaster that opened in 2002.
The 716-metre-long (2,349 ft) ride stands 13 metres (43 ft) tall and features a top speed of 80.5 kilometres per hour (50.0 mph). The four-inversion roller coaster was the first Bolliger & Mabillard ride to be installed outside of the United States. The ride has been very well received, consistently ranking highly in industry polls.
Length: 2,349 ft
Height: 42.7 ft
Drop: 104 ft
Speed: 50 mph
Elements: Chain Lift Hill, Corkscrew, Zero-G Roll, Loop, Corkscrew
Capacity: 1,400 riders per hour
Once the train is locked and checked the floor beneath it is lowered before the train then departs the station making a 45-degree, right-hand turn towards the lift hill. Once at the top of the 13-metre (43 ft) hill, the train makes a small dip and turns around 180 degrees to the left. The train then descends 31.7 metres (104 ft) down the first drop into the first inversion, a right-handed corkscrew. The train then navigates a right-handed, 270-degree downward helix that features 90 degree banking. Then the train rises up into the second inversion, a zero-g roll, where riders experience the feeling of weightlessness. It then makes a 180-degree right-handed stall turn into the third inversion, a vertical loop. After a left stall turn the train enters the second corkscrew. The train then passes through an underground tunnel, and through one more 180-degree turn, before being stopped by the brake run and returning to the station.