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Brake Arms Spring Back - Lack Of

Discussion in 'Bicycle Mechanics and Repairs' started by ak88, 18 Feb 2008.

  1. ak88

    ak88 New Member

    Not sure if the subject sounds right but anyway - the issue is that on pressing the brakes, the feel is a bit 'soggy' and when you look at the brake arms, the springing back away from the rim is damped and slow.

    Can this be fixed? Do I need to take it out and give it a good clean? Or is it time for new brakes?
     
  2. domtyler

    domtyler Über Member

    Strip down and get rid of all the gunk that has built up, regrease all parts and reassemble.
     
  3. Bollo

    Bollo Gas Giant Staff Member

    Location:
    Winch
    What dom said, plus check your cable runs and housings to see if they're gummed up.
     
  4. summerdays

    summerdays Cycling in the sun Staff Member

    Location:
    Bristol
    And check to see that the actual spring isn't cracked/broken ... that happened to me.
     
  5. andygates

    andygates New Member

    +1 on the grotty cable runs and filthy brake. Broken springs happen, but they're rare.

    If the spring is genuinely soggy, you can bend it into a tighter shape using brute force, then reassemble.
     
  6. OP
    OP
    ak88

    ak88 New Member

    Thanks all - looks like I need to overhaul the arms - is there any substitute or is it safe to put the arms back on without any thread lock. Don't think I have time to get any today.
     
  7. summerdays

    summerdays Cycling in the sun Staff Member

    Location:
    Bristol
    My second broken spring in 3 months today - at least I now have new brake sets on front and back now. (Not that I'm disagreeing with the other suggestions, just saying check the spring to exclude it as the problem).
     
  8. fossyant

    fossyant Ride It Like You Stole It!

    Location:
    South Manchester
    2 springs - rubbish brakes - hope you got a better set.

    Never had that happen in 22 years of road and MTB'ing !
     
  9. fossyant

    fossyant Ride It Like You Stole It!

    Location:
    South Manchester
    Have you bought new cables and outer cables ? - They could be too tight if single pivots - you don't say if single or dual pivot ?

    Easily adjusted and you don't need thread lock !
     
  10. OP
    OP
    ak88

    ak88 New Member

    Gave the brakes a complete strip and clean. Undid the lot, dropped the bits in a tub of Viro-sol mixed with a bit of water (its fantastic strong degreaser, cheap and smells orangey!). Got rid of all the gunk, bent the springs a bit more, greased and lubed the bits and assembled back. Checked the cable outers - looks ok but sprayed some GT85 and also lubed with a few drops of oil. Couldn't really do much as the cable was widened on the bolt on bit. Brakes work a lot better now.........still needs some adjusting and it squeaks VERY loudly at the front even with minor toeing.

    Thinking if the squeal continues (and it only happens on the front) - then I need to find some kool stops or take the bite and get some Swiss Stops.
     
  11. summerdays

    summerdays Cycling in the sun Staff Member

    Location:
    Bristol
    They were Tektro V-Brakes, they are now Deore.