1990, taking 18 months to complete. The ride's Canadian redwood trestles and large station building were constructed by Staveley's in-house construction team, which was responsible for building Lightwater Valley's other buildings. The metal track work was ordered from BCM who used fabricators 'Tubular Engineering' to manufacture it. However, much of the installation was largely undertaken in-house and supervised by engineers from British Rail after BCM were sacked due to track problems and slow progress. The scale of the project led to both contracted companies going bankrupt halfway through its construction, leaving Staveley's team and British Rail to finish the project on their own. Staveley got assistance from American and German roller coaster manufacturers, who advised him to ensure that there was enough flexibility in the track to allow for expansion and contraction under fluctuating temperatures. Overall, the project was over a year behind schedule and went significantly over budget. Staveley wanted to ensure that he was the first to ride his creation well in advance of its opening in order to give himself time to improve and re-work areas of track. He did so by riding in one of the trains that had not yet been fitted with any restraints, using only rope to secure himself. The ride was opened on 17 July 1991 by Frank Bruno. When opened, it was the world's longest rollercoaster at , taking over 5 minutes to ride, and costing £5.2 million. Initially, Staveley had not set out to break any records and it was only once construction had gotten underway that a colleague exclaimed that there couldn't be a roller coaster longer than the one they were building. Later that day, a colleague was sent to Ripon to buy the Guinness Book of Records, which confirmed that the length of track that Staveley had ordered was well over the record. The Ultimate has two trains, which have both been reverted to the original navy blue colour after serving 17 years as red and blue. The trains also used to have over-the-shoulder restraints until 1992 when they were removed and replaced with lap bar restraints to improve the ride experience. A number of modifications had to be made following the ride's opening. After a season of operation, a significant number of the bogies and wheels had cracks in them, resulting in subsequent replacement and strengthening. The wheels were found to be getting too hot so