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Thread: bb7 sticking

  1. #1
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    bb7 sticking

    I been having an issue with my rear bb7 sticking. At first I noticed the brakes would occasionally stick on, it got worse until they stayed stuck long enough for me to get off my bike and see what was going on. The actual cable anchor bracket was catching on one of the bolts holding the caliper assembly together. I checked the bolt is properly seated and the L bracket is not bent or deformed. It just appears the brake arm doesn't spring outward fast enough on return to clear this bolt head and the arm gets stuck.

    I'd figure I just got a bad set of brakes but I have the same problem on both my bikes both with 2008 bb7. The brakes worked great otherwise and didnt have this issue for the first several weeks of riding. Front brakes work great.

    Any ideas? I could file a little bit off the edge of the L bracket but i hate todo that.

    Just wondering if anyone else has seen this problem, didn't see anything in the forums on it.

    Thanks

  2. #2
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    Reputation: Bikinfoolferlife's Avatar
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    Your description isn't much help, you have photos? What bikes were you able to replicate the problem with? More than one bike points to your setup IMHO....
    "...the people get the government they deserve..."
    suum quique

  3. #3
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    BB7 Rear Brake Sticks

    I just got the same problem on the 2008 BB7 rear brake. The brake arm sticks when it is pulled in past a certain point. It just started doing this. Looks like it may be a design/manufacturing issue. I am going to try and contact avid about this...

    Earl

    earlt777@hotmail.com

  4. #4
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    I will post some pictures later.

    I tend to agree it looks like a design flaw there is almost 0 clearance between that bracket that anchors the cable and the caliper assembly bolt. I looked at some older bb7's on a friends bike and there is much more clearance between the two.

    I have installed these on two bikes with standard disk mounts so there is nothing unusall about my setup.

    Let me know what you find out from avid.

  5. #5
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    Lets see some pictures. I have 2008 BB-7s and there's nothing wrong with them. With Jagwire Ripcord cables, they are the smoothest mechanical brakes I've used.

  6. #6
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    i also have 08's with no problems at all
    Oh noes. I'm going to drink the Kool-Aid.

  7. #7
    now a fuji rider
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    ive had no problems here. worked good. maybe you got some with a defect on them or somehtings wrong cuz me and my friend have them and nothings happend lke that
    05 fuji diamond rc, avid juicy 5s, xt front dr,xtr rear, alex rims, fuji hub, magura rotors, rs recon 327, sram shifters

  8. #8
    I am a pathetic rider...
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    I think it is your setup, try moving the wheelside pad closer to the disk, your arm shouldn't have to move that far for it to get stuck, my BB7's do this, but only if I have no cable and do it by hand.
    Save the Earth, Ride a Cyclist

  9. #9
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    That makes sense. It (bracket) rubs regardless past a certain point and I can't see them having made a design mistake like that. The rear brackets do poke out a little bit, but after I trued rotor and readjusted it appears to have gone away.

    Thanks


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