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  1. #1
    Junior Member
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    Problems With V-Brakes

    2 months ago I brought a brand new bike, everything was fine until I started having problems with the brakes, they were rubbing against the rim. The other day I took it to a technician and he fixed the brakes up perfectly, but now today, I was about to ride my bike but the brakes were still rubbing. Does anyone know how to tweak brakes, I know it's an easy fix?

  2. #2
    Senior Member Shimagnolo's Avatar
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  3. #3
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    Besides the basic adjustment to balance the springs, there are two other issues that cause this, especially if it recurs after an adjustment.

    1- the cable section from frame to brake may be long or short and pulling or pushing on that arm. This is very common and easily fixed on bikes with full brake housing. Simply slide the cable forward or back so the section is neutral, neither tugging or pushing on the arm.

    2- there's excess friction on one arm or the other, either at the pivot, or where the leg of the spring touches on the arm (external spring only). I aleays lubricate the pivots and spring fulcrum before balancing the springs so there are no surprise variables.
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  4. #4
    Senior Member Eric S.'s Avatar
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    I love my V-brakes but they are kind of finicky. I'll pop out the noodle to remove a wheel, and when I get everything back together, the brakes are no longer centered. (Yes, the wheel is properly fitted in the dropouts.)

    I've never been able to identify why this happens.

  5. #5
    Senior Member Retro Grouch's Avatar
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    First do this:

    1. Stand your bike up on it's own wheels.
    2. Loosen the QR or the nut that holds the wheel onto the bike frame.
    3. Push downward on the top of the bike and retighten the wheel.
    4. did that fix your problem?
    My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.

  6. #6
    Senior Member
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    Quote Originally Posted by Eric S. View Post
    I love my V-brakes but they are kind of finicky. I'll pop out the noodle to remove a wheel, and when I get everything back together, the brakes are no longer centered. (Yes, the wheel is properly fitted in the dropouts.)

    I've never been able to identify why this happens.
    I identified the two most likely causes in my earlier post, check the cable length, but more likely it's pivot or spring friction.
    FB
    Chain-L site

    An ounce of diagnosis is worth a pound of cure.

    “Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

    “One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

    WARNING, I'm from New York. Thin skinned people should maintain safe distance.

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