LIMs/LSMs - whats the difference?

the topic title says it all really. what are the main differences between LIM and LSM launches?

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Nemesis Inferno - The Pressure is Building!

Rideman to the rescue (again)!! Check out this feature on his site.

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

wow, too many long words, that has gone right over my head! can anyone explain using simple terms please?!

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Nemesis Inferno - The Pressure is Building!

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http://www.coasterbuzz.com/forums/thread.asp?ForumID=11&TopicID=27113

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Säubern Sie mit Milch? ;)

LIMS produce electro-motion. The stator creates an AC field that induces current to the reaction plate

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So you believe that you are studying us, then kindly explain why you are the ones trapped in your seats.

Okay, let me distill it down for you:

The difference is in the type of motor. LIMs are linear induction motors, in which a moving magnetic field induces a current in a non-magnetic conductive reaction plate; a magnetic field forms around that reaction plate to propel it along the moving field.

Linear synchronous motors use fixed-field magnets on the vehicle which are pulled and pushed along by electromagnets along the track. LSMs are more powerful than LIMs and more efficient, and can operate with a larger gap between coil and reaction surface, but the LSM also requires more precise timing for it to function.

Does that work better for you? I need to put the simplified version on my website as well... :)

--Dave Althoff, Jr.

I thought laurence wanted less long words, FoF ;)

thanks rideman! i went on rock and rollercoaster at disney studios, paris last week. i know this is a LSM coaster. from the Q, you can see some of the launch track and i saw a small, flat vehicle thing which is what looks like is actually launched but attaches to the bottom of the train somehow. this is what confused me!

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Nemesis Inferno - The Pressure is Building!

laurence, that's just the way Vekoma handles the LSM launch with their system. Instead of putting the magnets on the train, they put the magnets on a pusher which shoves the train down the launch track. By comparison, Intamin and Premier put reaction fins on the train and launch the train directly.

--Dave Althoff, Jr.