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Anti-Rollbacks
16 posts
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I was wondering why do coasters need anti-rollbacks? I have no idea how the coaster attaches to the chain but if they chain was stopped in an emergency couldn't the chain just keep the train from rolling back? Or are the anti-roll backs just there for extra safety?
I don't think most chains can support a 30 ton train.
Last edited by Do I Know You on May 23rd, 2003, 6:21 am, edited 1 time in total.
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Without the motor helping the chain, I think that it would start to run backwards. If the chain had some sort of anti-go-the-wrong-way thingie, I'm sure you wouldn't need anti-rollbacks, but it's probably cheaper to use the anti-rollbacks than find a way to keep the chain moving in only one direction under any circumstances. Plus, once in a while chains break.
Why does a car have brakes? If your car is going 30 MPH couldn't you just put it in reverse to stop it?
how does the train attach to the chain?
Their are chain dogs under the train that catch on to the chain.
Exactly. And there are whats called anti-rollback dogs on the bottom of the train as well.
YOU ARE A FAILURE AT LIFE!
Lets me and you work together to help him understand.Chain dogs are used to attatch the chain to the train. The train moves up and the train goes with it. If the chain were to stop moving the car would move backward. The Anti-Rollback dogs are used to keep the train from moving backwards if the chain broke or stopped. Think of how a rachet works.
Thanks Alot I knew how the anti-roll backs worked but I was lost when it came to attaching the train to the chain.
Yeah and most people thought that the "dip and dives" at the top of B&Ms was to reduce stress on the chain so that it didn't come straight off the chain, but that isn't the reason at all. It never puts any stress on the chain when it releases because it just comes right off whenever gravity can take the entire train.
Well I have always asked myself the question of what the dip on the top of B&M tracks are for. I always just thought it was to speed the train up over the first drop maybe adding some more negative G's. Anyone else have the real reason?
I believe the dip is to disengage the chain.
Go Bulls!
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Whatever that dip is for, it sure gives a great sensation sitting in the backseat of RB. To me it just adds to the moment of plunging down the first drop.Hey Dave!!! Why are you posting now? Arent you supposed to be on Cornball or LOCOSUMO right now?
 I finally retired the Sarah Palin signature because she is now 100% irrelevant.
I think the dip is so the whole train gets the same sensation of the first drop. Example: American Eagle. If you are sitting in row 1, you litterally hang over the drop, and you are slowly released. Raging Bull, you go down the dip, and right before the first car is dropping, the entire train is off the lift so there's no hanging over the first drop. This is the one reason I can think of, unless there's some engineering to it that holds the real cause. But whatever, if you sit in row 9 on Raging Bull, that dip is worth life itself.
 "4 seats are better than 2"- CoasterDude04
It's exactly what was said above, not to disengage from the train.
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