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- Rollback_(roller_coaster) abstract "A rollback occurs on a launched roller coaster when the train is not launched fast enough to reach the top of the tower. It will roll backwards down the tower, and will be stopped by brakes on the launch track. Any roller coaster on which it is possible for a rollback to occur will have these brakes. Intamin, a manufacturer of roller-coasters, refers to the "rollback" as a "short shot".Most coasters contain at least one anti-rollback device to prevent a train from rolling backwards while ascending the main lift. This is typically with chain-driven lifts, not hydraulic launchers such as Kingda Ka or Top Thrill Dragster.Rollbacks are most common (though still quite rare) on the world's largest launched roller coasters, Kingda Ka at Six Flags Great Adventure, Top Thrill Dragster at Cedar Point, along with somewhat smaller rides such as Stealth at Thorpe Park and launched roller coasters of the same type, such as Xcelerator at Knott's Berry Farm and Storm Runner at Hersheypark.There are several factors that can cause a rollback: Unusual wind gusts could slow the train down enough to cause it to roll back. Cold weather increases friction in the wheels. A rollback will often occur during the first few test launches each day, as the launch motor has not been sufficiently warmed up by this point. Intentional rollbacks are sometimes conducted during testing.While the general public may not realize that rollbacks usually are completely safe and that coasters are designed with them in mind, many coaster enthusiasts look forward to being in one. Being in a rollback essentially gives riders a ride and a half, as the train will be launched again after the rollback. On some rides, when a rollback occurs with people on board, the train will first be brought back to the station to give the guests the option of getting off; other roller coasters with dual-train dispatch systems disallow backwards returns to the station and the train will simply be launched a second time without the option to disembark. Giving guests the option to get off the ride (to possibly return at a later time) is less of an incentive in parks that charge an overall admission fee and don't charge for individual rides.On extremely rare occasions, a single train may require more than two launches to clear the highest point of the track. In a video of a rollback on Stealth at Thorpe Park, the train is seen to reach slightly over halfway over the midpoint at the top. The train proceeded to roll back, due to an insufficiently powerful launch, combined with an uneven distribution of weight on the train in April 2006. Stealth also had a rollback in March 2008 due to strong winds.Very rarely, a train is launched with just enough speed to reach the track's highest point, resulting in the train getting stuck on the top. This results in neither a full ride nor a rollback. This happened three times on Top Thrill Dragster. All three times, a ride mechanic had to take an elevator to the top, and give the train a small push so it could complete the ride. It has also happened on Stealth at Thorpe Park during early morning tests. Maverick at Cedar Point tests roll backs every morning during testing.".
- Rollback_(roller_coaster) thumbnail Kingda_Ka_rollback_sign.jpg?width=300.
- Rollback_(roller_coaster) wikiPageExternalLink watch?v=LeOEZqbCjzQ.
- Rollback_(roller_coaster) wikiPageExternalLink watch?v=oNYzj6tw7XA.
- Rollback_(roller_coaster) wikiPageExternalLink watch?v=ylsj4BvnGB8.
- Rollback_(roller_coaster) wikiPageID "3189191".
- Rollback_(roller_coaster) wikiPageLength "4452".
- Rollback_(roller_coaster) wikiPageOutDegree "25".
- Rollback_(roller_coaster) wikiPageRevisionID "634970548".
- Rollback_(roller_coaster) wikiPageWikiLink Brake_run.
- Rollback_(roller_coaster) wikiPageWikiLink Category:Launched_roller_coasters.
- Rollback_(roller_coaster) wikiPageWikiLink Category:Roller_coaster_elements.
- Rollback_(roller_coaster) wikiPageWikiLink Cedar_Point.
- Rollback_(roller_coaster) wikiPageWikiLink Friction.
- Rollback_(roller_coaster) wikiPageWikiLink Hersheypark.
- Rollback_(roller_coaster) wikiPageWikiLink Intamin.
- Rollback_(roller_coaster) wikiPageWikiLink Kingda_Ka.
- Rollback_(roller_coaster) wikiPageWikiLink Knotts_Berry_Farm.
- Rollback_(roller_coaster) wikiPageWikiLink Launch_track.
- Rollback_(roller_coaster) wikiPageWikiLink Launched_roller_coaster.
- Rollback_(roller_coaster) wikiPageWikiLink Maverick_(roller_coaster).
- Rollback_(roller_coaster) wikiPageWikiLink Six_Flags_Great_Adventure.
- Rollback_(roller_coaster) wikiPageWikiLink Stealth_(roller_coaster).
- Rollback_(roller_coaster) wikiPageWikiLink Storm_Runner.
- Rollback_(roller_coaster) wikiPageWikiLink Thorpe_Park.
- Rollback_(roller_coaster) wikiPageWikiLink Top_Thrill_Dragster.
- Rollback_(roller_coaster) wikiPageWikiLink Train_(roller_coaster).
- Rollback_(roller_coaster) wikiPageWikiLink Xcelerator.
- Rollback_(roller_coaster) wikiPageWikiLink File:Kingda_Ka_rollback_sign.jpg.
- Rollback_(roller_coaster) wikiPageWikiLinkText "Rollback (roller coaster)".
- Rollback_(roller_coaster) wikiPageWikiLinkText "roll back".
- Rollback_(roller_coaster) wikiPageWikiLinkText "rollback".
- Rollback_(roller_coaster) wikiPageWikiLinkText "rollbacks".
- Rollback_(roller_coaster) hasPhotoCollection Rollback_(roller_coaster).
- Rollback_(roller_coaster) wikiPageUsesTemplate Template:Reflist.
- Rollback_(roller_coaster) wikiPageUsesTemplate Template:Roller_coaster.
- Rollback_(roller_coaster) subject Category:Launched_roller_coasters.
- Rollback_(roller_coaster) subject Category:Roller_coaster_elements.
- Rollback_(roller_coaster) comment "A rollback occurs on a launched roller coaster when the train is not launched fast enough to reach the top of the tower. It will roll backwards down the tower, and will be stopped by brakes on the launch track. Any roller coaster on which it is possible for a rollback to occur will have these brakes.".
- Rollback_(roller_coaster) label "Rollback (roller coaster)".
- Rollback_(roller_coaster) sameAs Rollback_(montagnes_russes).
- Rollback_(roller_coaster) sameAs m.08y18n.
- Rollback_(roller_coaster) sameAs Q3440424.
- Rollback_(roller_coaster) sameAs Q3440424.
- Rollback_(roller_coaster) wasDerivedFrom Rollback_(roller_coaster)?oldid=634970548.
- Rollback_(roller_coaster) depiction Kingda_Ka_rollback_sign.jpg.
- Rollback_(roller_coaster) isPrimaryTopicOf Rollback_(roller_coaster).