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Fixed Rotor And Floating Rotor


edd91

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Fixed rotors - One piece steel rotor, what 99% of all disks use.

Floating rotors - Two piece design comprising of an aluminium spider or centre section with a steel braking surface bolted to it.

Floating rotors tend to be lighter due to the aluminium carrier in the middle, and aids heat dissipation.

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The rear disk on my hardtail is gone pretty rattly and that doesn't get trialsed - just a few backhops the odd time :P... Officially floating calipers allow the rim of the disk to expand relative to the disk spider for high temperature use (It reduces the chance of the disk warping). Shimano/Magura disks are riveted to the spider and so aren't really floating disks, but they get rattly just the same if they're used on the back...

Edited by psycholist
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theres a video floating around of some mode rider gapping to front with one of them floating rotors and it sheared off on all the alloy bits :sick: he was fine (Y) but it's not worth the weight saving/bling for increased risk of failure.

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Floating rotors, after a while they develop quite a bit of play.

Totally fine for what they are made for though, just not trials.

my mates seem perfectly fine and hes running a 203 on a mod soo basically his brake is sharp as and he has no play at all,also its way better than his old normal rotor. and hes had it for a while. seem find to me if they are set up correctly.

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my mates seem perfectly fine and hes running a 203 on a mod soo basically his brake is sharp as and he has no play at all,also its way better than his old normal rotor. and hes had it for a while. seem find to me if they are set up correctly.

Hardly a fair test? A 203 on a mod is stupid anyway, and so will offer too much power weather or not its a floating rotor!

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