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Old 03-22-2005, 04:40 AM
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Workings of Dual MC

Can anyone explain the workings of a dual MC? From what I understand, if one system fails the other one will give you enough braking to stop. If this is true, why does the pedal go all the way to the floor when you are bleeding one of the systems? If you pump and hold... the pedal goes all the way to the floor when you open the bleeder. Wouldn't this be the same if you blew a rubber line on one of the systems? NO BRAKES!!!!!!!!!!!!


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Old 03-22-2005, 05:01 PM
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A master cylinder designed for a specific vehicle should have the proper amount of stroke to still apply one circuit of the system without the pedal of said vehicle hitting the floor.
When dealing with custom work, it's not within my realm to say whether or not you can still stop if you lose one circuit or the power booster, but with a stock system, DOT says they have to.
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Old 03-22-2005, 08:50 PM
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From personal experience, the dual system is better than nothing if you lose pressure in one side, but it won't work nearly as well as a single system that's in good shape. It's better than using the parking brake, but not by much, plus it requires much less thinking.
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