After adjusting brake pads in Avid BB7 calipers I will expierience brake drag while riding but not while the bike is on the repair stand. I had decided that the rub must be from the pad that moves not the fixed pad. I would typically stop and adjust the outer pad with poor results and then adjust the fixed pad until the rubbing stopped at which point I had bad brake feel at the lever but at least the #$@&% noise was gone.
This weekend I took a more methodical and sane approach to the problem and to my surprise the noise was coming from the fixed pad rubbing the rotor. There is no contact between the rotor and pad on the stand, noise is most evident when sprinting or going uphill. I thought the bike must be flexing putting tension on the cable thereby moving the pad and causing contact. This is not case as it is the fixed pad that is making contact which does not make sense to me:
the BB7 is mounted on the drop out which if it moved would move the brake with it.
bike is a calfee dropouts are not slotted so wheel should not be slipping in the drop out
rotor...Hope Moto/Tech V2
I adjust the fixed pad 4 clicks and everything worked fine, no noise good feel at the lever>
Anybody have an explanation?