LIM - CoasterBuzz

How do LIMS work?

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Las Vegas Rules!!

LIM/s work by using electromagnets lineing a portion of the track. The magnets are made of rare-earth materials that are naturally magnetic. when energized in the correct way, the magnets form a 'wave' of energy that sweeps down their length, grabbing a set of aluminum encased steel fins, which, inturn, are atached to the train, accelerating at a rapid rate to a high speed. JJ at SFA is capable of doing 0-63 in 3.6 secconds.

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2001- the year of flight!

Thanks!!

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Las Vegas Rules!!

Al said:
"How do LIMS work?

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Las Vegas Rules!!"

Well, first of all Vegas sucks, I live here and its a cool place to visit but to live here sucks. On to your question. LIM's are very simple to understand. The way they work is that there is a fin attatched to coaster car. This fin passes between stators that change force from AC to DC essentially pulling then pushing the fin (and the car for that matter). On Vekoma's new LIM coasters (never been on one) i hear instead of pushing the car itself, the lims push a catchwagon so you get an effect like anton's shuttle loopers with a little sled thing pushing the car.

LSM's are different. These involve a rare earth magnet on the car and stators on the track.

wow wildone you replied at 12:19, i replied at 12:21 thas crazy. hehe

LOL! I was the first to read the topic but took so long to reply, several of you beat me to it!

Linear Induction Motors. As featured on Intamin & Premier coasters. Intamin trains have a single row of steel fins under or on the chassises depending if its an Inverted or Sit-Down. Premier trains have a fin on each side of the car.

The track is dotted with electromagnets that are timed to attract & pull each fin, i.e. the Induction. This timing alone is very complicated which is why Volcano had problems. Baddboy, I'm pretty sure you can't repel steel using electromagnets unless there's something I don't know!! Anyone?

Intamin Reverse Freefall coasters & Vekoma Launched coasters use LSMs - Linear Synchronmus Motors. The cars use permanent magnets instead of steel fins. The electromagnets are timed to attract & repel each perm. magnet in sucession. Think of a rotary motor rolled out flat. This even more complicated with STE having the same problems. Also the power cables weren't thick enough to handle the tremendous currents - about 2 Megawatts per launch. This alone is more than SFMM's total power usage during the launch!

Tower of Terror, my local RFF, uses 2.2Mw per launch, which is double Dreamworld's usage during so!

LSMs are far more powerful & 80% effective compared to LIMs at 15%. However the energy bills are huge as you can imagine, what with the energy crisis in Calif. Correct me if I'm wrong, so how come V2's going up in SFMW?

2Mw per launch, dunno how many MwH this is. Anyone? As I'd like to know how much it costs per launch for the electricity alone. *** This post was edited by CoasterGod on 3/6/2001. ***

In simple terms a lime works like this. A magnut pulls you and and then once you pass one magnet it repels you. And to break, it pulls you back and slowy repels you
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Golioath Rocks the west but Millinnium Force Rules The Rest

Actually a lime works like this:

1) Cut into wedges
2) Squeeze into Gin & Tonic
3) Enjoy!

C'mon, review yer posts, man. *** This post was edited by Doug Rowe on 3/6/2001. ***

(snicker)
A lime works like this: Slice it to make a nice garnish, or to stick in the end of a beer bottle; squeeze for a nice citrus flavor.....

(sorry, Flds I couldn't resist.)

I will soon have a LIM primer on my web page. For now, consult britannica.com and look up "electric motor." There is a good explanation there of how any electric motor works. Then, visit http://www.force.co.uk/howmain.htm to see how linear induction motors compare.

--Dave Althoff, Jr.

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Doug Rowe said:
"Actually a lime works like this:

1) Cut into wedges
2) Squeeze into Gin & Tonic
3) Enjoy!

C'mon, review yer posts, man."

ROFLMAO!!! :):):)

Nice link Dave. I've been there aeons ago. Force Engineering are the suppliers of LIMs for Premier Launched Coasters. http://www.force.co.uk/ There's no mention of LSMs though.

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Home Park - Wonderland Sydney, Australia, featuring;
1) The Demon - 1988 Vekoma Boomerang
2) The Bush Beast - 1985 KEC Woodie (Clone of PKD's Grizzly)
3) Beastie - 1985 KEC Junior Woodie
4) More steel coasters please!!! Preferably a B&M Masterpiece *** This post was edited by CoasterGod on 3/6/2001. ***