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  1. #1
    mtbr member
    Join Date
    Mar 2006

    Formula R1 Pad Clearance

    I always have trouble with the clearance on the front R1 brake. Has anyone found a solution this? I have rotor rub during every ride regardless of how well the brake is aligned.

  2. #2
    mtbr member
    Reputation: ia_ss157's Avatar
    Join Date
    Sep 2005
    My suggestion is to check the post mount area of the caliper. I was having some issues with the pads rubbing upon using the proper torque setting. What I found was the caliper itself was slightly deforming because of how radically machined / forged with such little material. The deformation was making it so every time I was trying to torque the caliper or slide it side to side, the caliper would bolt down in the same position.

    A couple of swipes of a round file later and the caliper was clean and ready to be torqued. Voila, no more issues. I will note that I am running them about 10in-lbs lower on torque than I do with other calipers which are beefier in that area.

    I also have heard of people having piston retraction issues due to a tight fit/lack of lubrication on the piston and seals but haven't run into any issues there myself.

  3. #3
    mtbr member
    Join Date
    Dec 2006
    something else to check, the post mount itself may not be flush and may need to be faced. Just had this problem with R1/Reba interface.

  4. #4
    I'm Slow
    Reputation: paulrb02's Avatar
    Join Date
    Aug 2009
    I think it might just the fact that the rotor is kinda flimsy. I noticed in truing the rotor that it bends really easy. With my avid rotors I have to bend a bit harder to get it straight. But I have the same problem. Mountain Biking in South Alabama.

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