Accelerator Coaster

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Accelerator Coaster" – news · newspapers · books · scholar · JSTOR (June 2012) (Learn how and when to remove this message)

Accelerator Coaster
Top Thrill Dragster at Cedar Point
Status	Discontinued
First manufactured	2002
No. of installations	15
Manufacturer	Intamin
Restraint Style	Over-the-shoulder, Lap-bar

An Accelerator Coaster is a hydraulically launched roller coaster model from Intamin. The model usually consists of a long, straight launch track, a top hat tower element, and magnetic brakes that smoothly stop the train without making contact. The technology was developed by Intamin engineers as an alternative to electromagnetic launch systems, such as the Linear Induction Motor (LIM) and Linear Synchronous Motor (LSM), that are found on earlier launched roller coasters like the Flight of Fear and The Joker's Jinx. Unlike the earlier linear induction motors, the Accelerator Coaster's launch system exhibits constant acceleration and is capable of reaching greater speeds.

Accelerator Coasters with the top hat element are known to perform an occasional rollback – when the train is unable to complete the top hat element and rolls back to the starting point – which can occur due to a number of different factors. Despite this, Accelerator Coasters have a great track record for safety and are extremely power efficient, especially compared to older technologies such as the classic chain lift found on most roller coasters. Many fans also enjoy the rarity of a rollback. Formula Rossa, the world's fastest coaster, and Kingda Ka, the world's tallest, are some of the most well-known installations around the world.

Despite these world-record setting achievements, Accelerator roller coasters have been infamous for their long terms of mechanical issues with its launch. Examples of these include Xcelerator at Knott's Berry Farm or the former Top Thrill Dragster at Cedar Point and as of 2022, Accelerator Coasters are no longer being produced.