Advertise on Bikeforums.net



User Tag List

Results 1 to 6 of 6
  1. #1
    Senior Member
    Join Date
    Aug 2005
    Location
    edmond, ok
    My Bikes
    trek 5200
    Posts
    348
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Campy brakes question

    I have a chronic reoccuring problem with my rear campy record brake. When I activate the lever, both brakes pull in against the rim, but when it releases only the left side moves away, the right side stays against the rim. I have checked both the attachment bolt and the lock nut and they seem tight. When I take it totally apart and put it back together it temporarily fixes the problem but I am not sure why. And before you suggest taking it to the lbs, it was at the lbs for a tune up less than a month ago, and not being an owner of multiple bikes, I hate to be without it for 2-3 day turnaround time usually found at my lbs in the middle of the season. Any thoughts?

  2. #2
    Gluteus Enormus mmmdonuts's Avatar
    Join Date
    Dec 2007
    Location
    Raleigh, NC
    My Bikes
    Yes
    Posts
    2,229
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Single or dual pivot? Can you move the arm away by hand? And if you do what is moving, the arm or the entire caliper?

    The bolts could be tight but they must be tight against the frame to keep the caliper from moving off center. For example, the bolts could have bottomed out if the lock washer(s) were lost during reassembly.
    Everybody's got plans... until they get hit.
    - Mike Tyson

  3. #3
    Senior Member
    Join Date
    Jul 2003
    Location
    Brooklyn, NY
    Posts
    1,453
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You might try lubricating the pivot bolt.
    Internal Gear Hub Guru
    Currently owned hubs: Sachs Pentasport, SRAM P5 Drum, Sturmey SRF5-W , Sturmey XRD3
    Previously owned hubs: Shimano Nexus 8 speed, Sturmey AW 3 speed, Shimano 3 speed coaster, SRAM S7 Drum, Sturmey XRF8 8 speed
    Tested hubs: SRAM i-Motion 9 speed, Sturmey XRD5

  4. #4
    Senior Member
    Join Date
    Aug 2005
    Location
    edmond, ok
    My Bikes
    trek 5200
    Posts
    348
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Did the lube didn't change. Single pivot, yes I can move the arm away by hand and when I do the entire caliper moves.

  5. #5
    Gluteus Enormus mmmdonuts's Avatar
    Join Date
    Dec 2007
    Location
    Raleigh, NC
    My Bikes
    Yes
    Posts
    2,229
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I think your caliper is loose. You shouldn't have to take it totally apart to fix since it sounds like the mounting nut is what needs to be tightened. The nut behind the brake bridge.

    This might help: http://bicycletutor.com/sidepull-caliper-brakes/
    Everybody's got plans... until they get hit.
    - Mike Tyson

  6. #6
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    25,264
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Most single pull brakes have flats behind the arms that will take a thin "cone wrench" to center the calipers. Use that wrench to get them centered and then hold them in place while you tighten the mounting nut to the frame snugly.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •