Hydraulic launch - Coasterpedia - The Roller Coaster and ...
2020-11-26u2002·u2002The tallest and fastest roller coasters (Kingda Ka and Formula Rossa, respectively) both use a hydraulic system. Top speeds of hydraulically launched roller coasters range from 45 mph to 150 mph. Hydraulically launched roller coasters have suffered from extended downtime due to maintenance issues with the launch system.
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