Results 1 to 3 of 3
  1. #1
    Weekend Warrior
    Reputation: daleksic's Avatar
    Join Date
    Aug 2007
    Posts
    1,078

    Proper and quick setup of AVID BB7

    I was thoroughly frustrated with the setup of my BB7s when I first installed them. I had stuttering, poor brake performance and just generally a funny feel on the levers. I hope this is going to help someone installing or readjusting calipers without going through the frustration like I did.

    -------------------------------------------------

    When you first install the calipers tighten them slightly so you can still move them with your hands easily. At this point your inboard and outboard pads are (should be) still completely retarded. Now slowly turn the inboard knob 2 clicks in, then turn the outboard knob by 1 clicks in. Repeat this until the pads grab the rotor and you can't turn either knob anymore. Don't cheat as this will properly (off)-center the rotor, the way it is supposed to be.

    Now, grab your brake lever firmly and the caliper should center itself on the rotor. While holding the lever tightly, tighten the caliper bolts to recommended specs.

    Now you can retard the inboard and outboard pads just enough so that the rotor runs freely without rubbing. If you got Roundagon rotors there is a good chance that the rotor will not be 100% straight right out of the box. You can try to correct that, or just retard the brakes far enough so there is no rub. I tried straightening without much success. After a few 100 miles though they seem to be truer than they were new or than I was able to adjust them.

    I noticed that some online retailers sell the BB7 kits with Roundagons and others include the G2 rotors. Get the ones with the G2's, you'll regret if you don't.

    BB7s from Avid are as good as it gets in a mechanical setup. So if there are any problems it is most likely an adjustment issue. Refer to the poorly illustrated paper mess they call a manual.

    In the end it's all about the caliper adjustment.
    Last edited by daleksic; 06-09-2009 at 09:18 AM.

  2. #2
    mtbr member
    Reputation: CmdrChode's Avatar
    Join Date
    Mar 2009
    Posts
    80
    Good info. This link was also very helpful for me:

    http://www.youtube.com/watch?v=x1kezXQVnLY

    AS

  3. #3
    mtbr member
    Reputation:
    Join Date
    Jan 2004
    Posts
    4,165
    Quote Originally Posted by daleksic
    Now, grab your brake lever firmly and the caliper should center itself on the rotor. While holding the lever tightly, tighten the caliper bolts to recommended specs.
    I don't know if other will agree with me or not, but when I have grabbed the levers and then tightened, I usually get confused when I think I'm finished. Usually it will seem that everything has moved.

    So now, once the pads are contacting the rotor (as you have outlined), then I just tighten the bolts. This usually is easier because both my hands can be free to turn those darn red knobs that hurt my fingers.

Posting Permissions

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