Originally Posted by
cderalow
this.
my bb5-r distinctly say 'road' on the side.
barring that being an issue, I will say getting road discs setup is very finicky.
I've found the best way to do it is to crank the pads all the way out off the bike. install on bike with disc in place/wheels in place.
set on ground. use a thin cardboard spacer (cereal box cardboard) on either side of the disc, then center the caliper on the disc that way by cranking the moveable pad in.
i think avid recommends 1mm of space on either side of the rotor when installed.
once i've got the caliper centered, i then hook the cable on with the barrel adjuster all the way down. use a 4th hand to install cable at like 95% of lever throw.
then use the barrel adjuster and an inline adjuster to get it perfect.
once it's on, i sure as hell try not to remove my cable. removing wheel seems fine and doesn't affect rubbing, but least bit of messing with adjusters and cable restarts the whole process.
Wow, this set of instructions has almost nothing similar to the instructions provided by Avid for the BB7s. I just follow the instructions Avid provides, which works great. The Avids are designed to have one pad press into the rotor then slightly flex the rotor to push the other side to contact the stationary pad. Sounds very strange but it works pretty well in practice.
Regardless, it sounds like you might be using an Avid MTB caliper (requires a longer pull) with road levers (shorter pull) so you can barely pull enough cable to actuate the brakes when set up according to directions. If this is the case you have to change either the levers or calipers to be sure they are meant to work together.
I just dumped my Avid BB7s for the TRP Hy/RD calipers and am never going back!