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I'm A Pedalphile
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Disc Rubbing
Ok, I've searched some other threads but haven't found exactly what I'm looking for.
I have a Fox Float 100RLC, Chris King Iso-Disc front hub, and Hayes HFX Mag+ brakes.
My front brake is properly bled and feels great, but I get rubbing every now and then. I can adjust my caliper so that it doesn't rub, but when I'm riding, it rubs a little bit and sometimes the rubbing goes away and comes back.
I know there is an issue regarding using a Fox fork and Chris King hub, but that doesn't seem to be the problem for me, since I am able to adjust the caliper initially so that it doesn't rub. Does this seem correct or should I consider having the disc tabs faced?
My other guess is that one of the pads is sticking, so that when I use the brakes, it doesn't return all the way and continues to rub on the mildly untrue rotors. If I decide to clean the pistons, I know that I have to take out the pads and squeeze the lever to expose the pistons in the caliper. How far can I squeeze the pistons out before I risk popping them out and making a mess with DOT fluid?
I hope you guys can help me out, because this problem is really frustrating me.
Thanks,
Jon
Bikes:
Mountain: Santa Cruz Blur
Road: Trek Madone 5.2 SL
Commuter: Sette Reken 1x9
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I'm A Pedalphile
Reputation:
No one has any suggestions?
Bikes:
Mountain: Santa Cruz Blur
Road: Trek Madone 5.2 SL
Commuter: Sette Reken 1x9
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 Originally Posted by jonlong
...but when I'm riding, it rubs a little bit and sometimes the rubbing goes away and comes back...
Pretty normal. A bit of grit or water can be enough to get a little rub.
mtbtires.com
The trouble with common sense is it is no longer common
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mtbr member
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 Originally Posted by jonlong
My front brake is properly bled and feels great, but I get rubbing every now and then. I can adjust my caliper so that it doesn't rub, but when I'm riding, it rubs a little bit and sometimes the rubbing goes away and comes back.
I hope you guys can help me out, because this problem is really frustrating me.
Thanks,
Jon
There are a lot of theories on what causes the sching-sching sound, but I think it's caused by the fork flexing. I recently changed my front rotor from a 8" to a 6" and eliminated 90% of the problem. Even the tiniest amount of flex at the hubs can translate to enough movement out where the calipers are to cause a slight disk/pad contact. Good luck. - Dave
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mtbr member
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Yep, normal for disc brakes. Bouncing down the trail can knock things into a slightly different alignment. My rotor-rub noises usually change several times per ride.
A trick to adjust Hayes while riding is to squeeze the lever until the brake drags a bit, then release, then repeat a couple times. The self-adjusting-pad feature usually makes the rub go away.
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