Stealth is a steel roller coaster built by Intamin AG of Switzerland. The coaster is located in the Amity Cove area of Thorpe Park in Surrey, England and opened in 2006. The ride reaches a maximum height of 62.5 m (206 ft), which makes it the third tallest roller coaster in Europe after Silver Star and Pepsi Max Big One. The ride reaches speeds of around 130 km/h (80 mph) in 2.83 seconds. Stealth was the fastest roller coaster in Europe, although it lost this record when Furius Baco opened in 2007 at Port Aventura in Spain. The ride produces G-forces of up to 4.8g and is thought to have cost £12 million.
When the ride was first announced on the Thorpe Park mid-term development plans it was compared to Xcelerator at Knott's Berry Farm in the US. It went under the name Project Stealth. Stealth bears major similarities to Kingda Ka, the current world record holder for tallest and fastest roller coaster.
In the original designs there were plans for a grandstand style queue-line, which involved the queue wrapping around and through a traditional drag racing grandstand.[] This was turned down in favour of a more cost-effective 'cattle pen' queue-line similar to the one at Alton Towers for its coaster, Rita - Queen of Speed.
Stealth had its own live DJ in a booth outside the ride. The DJ played rock 'n' roll classics from musicians such as Elvis Presley, The Champs and the Beach Boys. Guests could request tracks and give shoutouts that could be heard throughout the queue-line and the Stealth area of Thorpe Park.[] From 2007, the DJ booth was no longer available, and a pre-recorded mock radio station is now played in the Stealth area. The booth is now used to sell Fastrack tickets.[]
Upon embarking, an American accented announcer says "Place your heads back, face forwards, hold on tight and brace yourself" the train then edges forwards and then back a few times, while a revving sound effect is played, in order to hook onto the catch car. The launch brakes are retracted and a countdown begins during which the announcer repeats his message. Depending on if the ride is in sequence,the announcer shouts "3,2,1", the light will turn green and the announcer shouts "Go, Go, GO!" (However on Fright Nights the announcer just uses his safety message, but in a deep, disembodied voice. Although in the 2009 fright nights, a ghostly child repeats the phrase 'It's only a dream' several times before the car is launched). At that instant the train is accelerated to 80 mph (130 km/h). As it nears the end launch track, the catch car unhooks itself and the train carries on its journey up the vertical 205 ft tower, cresting over the top-hat and coming back down. Stealth provides excellent panoramic views of the area from the top, if one is at the peak long enough to appreciate them and look in the right direction. The London skyline and Heathrow Airport are visible to the North East & North respectively, Windsor Castle to the North North West, Guildford Cathedral to the South and the Royal Holloway College and the Holloway Sanitorium to the West and if it is a very clear day Wembley Stadium can be seen. The train then crests over a smaller airtime hill while being slowed down by magnetic brakes.
As with many launched roller coasters, Stealth is susceptible to rollbacks when the train does not gain enough momentum on the launch track in order to make it over the top-hat and rolls down backwards. Stealth has magnetic brakes along the launch track in order to slow the train down if this happens. Rollbacks usually only happen when the ride has first opened, but other factors can affect the launching system.
On 25 May 2008, the train reached the exact momentum to completely stop on the top. Unlike a similar incident which occurred on Cedar Point's Top Thrill Dragster, it was during testing. The problem was solved by three engineers giving it a small push to make it roll back. It remained closed until about 4PM, then resumed operation.
Stealth has been noted for its many failed launches due to attempting to launch before the nitrogen accumulators have properly refilled or before the catch car has arrived back at the station, the latter causing a delayed launch quite a while after the ride announcer shouts "Go, Go, Go!". There is a sign outside of the ride that says that there are on average four rollbacks per day.
Stealth is themed as a 1960s race track called "Amity Speedway". The nearby buildings are made to look worn and old, to fit in with the tidal wave theme including a 1950/60s diner and buildings with typical 1960s advertisements. As with many other themed rollercoasters, Stealth has its own ambience music, for a more entertaining queuing experience. The ambience music in question is a set list of '60s popular music.
Before the beginning of the 2007 season, Tussauds announced that Stealth had been upgraded to do 0-80 mph in 1.8 seconds. However, the sign at the entrance of the ride still reads 0-80 mph in 2.3 seconds. This means that many people can still be unaware of the change of acceleration. The slogan "It's Back. It's Upgraded. Are you ready?" was used to promote the improved ride via the official website.
When Stealth opened in 2006, it was the fastest roller coaster in Europe. It has now lost its title to the Furius Baco at Port Aventura, Spain although Stealth still retains the record for having the fastest acceleration of any roller coaster in Europe. It is currently the fastest roller coaster in the UK at 80 mph. It is the second tallest roller coaster in the UK behind Pepsi Max Big One and third tallest roller coaster in Europe.