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  • "New" bike, having disk brake problems

     Twilightdoor updated 11 years, 5 months ago 3 Members · 8 Posts
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  • Twilightdoor

    Member
    4 August 2009 at 6:06 pm

    Hey guys, sorry for this, but i cant find the answer to my problem on any of the other threads.

    I have used loads of bikes but im competely new to Hydraulic disk brakes and i got my hands on some Avid seven carbon brakes.

    They are on my bike and the rear seems fine apart from rubbing slightly, which i think is down to a slightly untrue wheel.

    The problem is in the front brake, which is that the brake pads are too tight against the actual disk so they rub and stop the wheel quickly even when not applying the brakes. I have looked on the user manual on the internet but cannot find a way to adjust the brake pads.

    can any of you guys help me?

  • tomlevell

    Member
    4 August 2009 at 9:26 pm

    The rear is not due to the wheel. The rotor may be warped slightly but if it’s not causing a notable drag don’t worry about it.

    First thing to do with the front is to drop the wheel out and prise the pads apart with a wide flat CLEAN blade. Then put the wheel back in and pump the lever. This should reset the pads and hopefully cure the problem. You may need to recentre the caliper over the disc at the same time.

  • Twilightdoor

    Member
    4 August 2009 at 10:03 pm

    Hi thanks for the reply 😀

    I just tried taking the wheel out and prising the pads apart, but i havnt managed to make them move far enough apart to stop them touching the disk. 😕 Could there be a problem with the brakes?

  • tomlevell

    Member
    5 August 2009 at 11:56 am

    They do sit very close to the disk so the next thing to do is to adjust the caliper position to ensure the pads don’t touch the disk.

    See this

    http://www.parktool.com/repair/readhowto.asp?id=142

  • lordmerchant

    Member
    5 August 2009 at 4:39 pm

    I found the perfect way for opening pads out too, everytime I used a screwdriver or anything similar it would ALWAYS damage the pads – so I bought myself a cotter pin install/remover and the end for splitting the pin is perfect for prising pads apart.

  • Twilightdoor

    Member
    5 August 2009 at 8:59 pm

    thanks again, i managed to get the pads far apart enough so the wheel can spin a while, but there is still a little contact. I will try asjusting the caliper position when im thinking straight 😛

    Should this be on a new topic?

    My gears were acting up, so i removed the derailleur and i found the hanger was bent. Here is a pic. So no hanger should be bent?

    thanks 🙂

  • tomlevell

    Member
    5 August 2009 at 9:17 pm

    Gear hangers are supposed to be perpendicular with the floor when the bike is upright.

    Don’t be too enthusiastic if you try and straighten it.

  • Twilightdoor

    Member
    6 August 2009 at 1:23 pm

    Thanks alot for your help, i have straightened it and it works fine now.

    I also adjusted the brake calipers so the front brake is now fine,

    thanks for getting my bike on the trails again!! 😀 😀

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