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I definately know of that event on Vortex. I believe it either happened in 01, or 02. This is the reason why ride operators are not allowed to use the transfer track controls anymore on rides like Vortex, TG, AE, etc. I dont remember the full story but I'm pretty sure the train was not chaulked and chained and the track was moved. Arrow coasters maintain their breaking power when the two airbags are inflated therefore pushing the brake together. Over time as air leaks out, the brakes hold less and less untill they are ineffective. This is why all arrow coaster trains are either chaulked and chained at the end of the night or left on a lift.

That picture of congo is just everyday guests being stupid. Oh well, eventually we'll have the racing harnesses of perilous plunge and all will be safe :wacko: .

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Arrow coasters maintain their breaking power when the two airbags are inflated therefore pushing the brake together. Over time as air leaks out, the brakes hold less and less untill they are ineffective. This is why all arrow coaster trains are either chaulked and chained at the end of the night or left on a lift.

I will have to dissagree with that theory, if you closely look at those brakes you will see the airbags are inflated to open the brakes not close them, What if there was a blowout in the air compressor,

you would have no brakes whatsoever and would therefore would be a flaw in the ride safety system

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Arrow coasters maintain their breaking power when the two airbags are inflated therefore pushing the brake together. Over time as air leaks out, the brakes hold less and less untill they are ineffective. This is why all arrow coaster trains are either chaulked and chained at the end of the night or left on a lift.

I will have to dissagree with that theory, if you closely look at those brakes you will see the airbags are inflated to open the brakes not close them, What if there was a blowout in the air compressor,

you would have no brakes whatsoever and would therefore would be a flaw in the ride safety system

No if you look closely, there are two kevlar air bags on the OUTSIDE of the "pinchers". When the airbags inflate, it takes up the extra space pushing the brakes together. Arrow brakes are not like IJ or the wood coaster breaks that use an air powered actuater to open and close the brakes. Also if they were defaulted to be closed, explain why we chain and chaulk when we dont on non arrow coasters. I've been working at Vortex when an airbag has blown and know that when that happend that brake opened, as we were still able to dispatch trains. If the brake would have closed (as you say it should have) when bag blew then the trains would have been caught in the brake.

Let me sketch it really quickly:

arrowbrakespi1.png

As you can see, when the bags are inflated the brakes close. This is why there is the sound of releasing air when the dispatch button is pressed(anyone who's worked express, Vortex or TG knows what I'm talking about because you hear it over and over and over), it is because all of the airbags are venting their air. Similarly it is why there is such a loud clap when the brakes close because of how quickly the bags fill with air and smack together. How do they open? Usually there is a simple set of leaf springs that resist the closing the brake so that once there is a lack of air pressure, the brakes open. This is also why all the arrow rides have the main aircompressor, but also have all the extra air pressure tanks all over. Top gun for example has tanks lineing the celing of the station. Vortex has the reserve tanks near every brake and under the station, as does express.

That being said THIS^ is why arrow coasters Chaulk (a wedge piece of metal put on top of the track in front of the front wheel) and chain (a chain mounted to the back of the station or transfer track that is hooked to the train and tightened down) at the end of the night. Because if over a period of time, especially through the week, air pressure is lost, and the brakes slowly release.

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