Thrust Air 2K Rollback device?

The wheels could have one-way bearings on them. Also someone said they saw booster wheels on the top of the hill. You can be sure they have 1-way bearings as well, plus motors in case the train doesn't have enough momentum to clear the top.

Yeah, S&S have switched to smaller-diameter aircraft grade tyres. Anyone think they'll be inflated with that special gas - Nitrogen? To stop them from bursting into flames? :-)

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Home park - Wonderland Sydney, Australia.

The "rollback brakes" aren't all that difficult to engineer. Every coaster with an automated control system has this design.

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Scott W. Short
scott@midwestcoastercentral.com
http://www.midwestcoastercentral.com