Self-adjusting BB7 rear brake
Hello,
I have Avid BB7 disc brakes on my Surly Disc Trucker. About a year ago I replaced the stock rear pads with genuine Avid sintered metal pads. I'm generally satisfied with them.
A couple weeks ago I realigned the caliper and everything seemed fine. For some reason after this, every few rides I notice that the brake lever travel is less than at the last ride -- in other words, the pads are closer to the rotor than I had initially adjusted them to be, and the pads are now rubbing on the rotor when I spin the wheel. If I back off the adjusting knobs a few clicks (inside twice as many as the outboard one), everything's fine again until next ride.
I can't figure out how this happens. Has anyone seen this?
thanks
Steve
I have Avid BB7 disc brakes on my Surly Disc Trucker. About a year ago I replaced the stock rear pads with genuine Avid sintered metal pads. I'm generally satisfied with them.
A couple weeks ago I realigned the caliper and everything seemed fine. For some reason after this, every few rides I notice that the brake lever travel is less than at the last ride -- in other words, the pads are closer to the rotor than I had initially adjusted them to be, and the pads are now rubbing on the rotor when I spin the wheel. If I back off the adjusting knobs a few clicks (inside twice as many as the outboard one), everything's fine again until next ride.
I can't figure out how this happens. Has anyone seen this?
thanks
Steve