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Old 09-03-2007, 10:49 PM   #1
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MX - Front brake disc play

Does anyone know if it is normal to have some play between the disc and disc carrier on a floating disc setup on dirtbikes?

My street bike has 0 play, but on my YZ-250F if I lock up the front brake, then push the bike forward/backward, there is some play evident. I originally thought it was my front fork, steering head bearing, or front wheel bearings that were shot, but narrowed it down to the disc today. It doesnt seem to me like this should cause a problem, but it doesnt seem ordinary either.
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Old 09-03-2007, 10:50 PM   #2
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shouldnt do that. if you lock it up it should not move any. now you will feel the suspension move more than your streetbike.. but that is all.
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Old 09-03-2007, 10:52 PM   #3
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that doesnt sound normal to me, I dont recal my rm doing that??? Im curious too.
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Old 09-03-2007, 11:04 PM   #4
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All mine have always come up some(1-2" maybe) when they grabbed but once they would grab they wouldn't move.
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Old 09-04-2007, 08:18 AM   #5
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It should not have any radial movement. If it does the carrier is worn. If it's bad enough, the buttons will fall out and the disc can come off the carrier. Not good when that happens.
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