AVID mech disc brake question, on a SS....- Mtbr.com
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  1. #1
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    AVID mech disc brake question, on a SS....

    Lots of you run these brakes so I thought I would ask the SSers for advice. I just put an AVID mehanical disc brake on the Surly 1x1 fork. Installation went well - as easy as everyone says - but I have a question. How close to the rotor are the pads supposed to be? I seemed to be pulling alot of cable at first but by dialing the pads inward its OK now, but could be better. I'm using my V brake Shimano Servowave levers (that was part of the attraction of the mechanical discs, keep the cost down by using the V brake levers). Is that a factor as well?

  2. #2
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    After centering the caliper slot over the rotor per the instructions, adjust the inner (stationary) pad as close as possible to the rotor without the rotor actually rubbing the pad. Then adjust the outer (moving) pad's red knob to achieve the engagement point you like at the lever.

    The reason you want the stationary pad as close to the rotor as possible is because the moving pad deforms the rotor and squeezes it between itself and the stationary pad. The more the rotor must be deformed, the lower power of the brake.

    Your (V-brake compatible) Shimano levers should work fine.

    --Sparty


    Quote Originally Posted by hu-man
    Lots of you run these brakes so I thought I would ask the SSers for advice. I just put an AVID mehanical disc brake on the Surly 1x1 fork. Installation went well - as easy as everyone says - but I have a question. How close to the rotor are the pads supposed to be? I seemed to be pulling alot of cable at first but by dialing the pads inward its OK now, but could be better. I'm using my V brake Shimano Servowave levers (that was part of the attraction of the mechanical discs, keep the cost down by using the V brake levers). Is that a factor as well?
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  3. #3
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    I have a good trick to get great lever feel. Adjust both pads so they are as far from the rotor as possible. Loosen the cable bolt so the cable is free to move. The arm that the cable attaches to should be at it's all the way down position. Move the arm so it is a third of the way through it's rotation and tighten the cable down so that this is it's starting position. Now adjust just as sparticus advises.

    This is a trick I learned from a friend and it works well on my brakes.

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