What are three lifting mechanisms in roller coasters?

Well, there is the chain lift hill, which makes the famous tick-tick-tick sound. There is also 3 different methods of launching the coaster. There is the air compression coaster (look up Hypersonic XLC), the elctromagnetic launch (look up Flight of Fear or Joker's Jinx), and there is the flywheel (look up Montezooma's Revenge). Some rollercoasters have other, much rarer lifting mechanisms. There is the elevator lift and the spiral lift. for more info or research, go to rcdb.com