Thanks all and sorry for the lack of detail in my first post. My setup is a ENVE 2.0 road fork modified by calfee to have disc brake tabs. I use rim brakes in the summer then mount a road BB7 caliper in the winter, stock 160mm rotor. I used this setup last year, then overhauled the caliper this summer. The pads are the originals and are 3.2mm wide so I didn't replace them, just remounted them.
When I say "unswept" I mean that most of the braking surface of the rotor is shiny but the outer 1-2mm is dirty, it looks like the pads are not reaching that far out but it's hard to confirm as there's not much visibility near the top of the pads.
Originally Posted by AndreyT
It is probably the latter, i.e. the pads don't even cover the most peripheral "ring" of the disc. This is actually perfectly normal. For example, this is exactly the way it is in a typical BB7 setup. About 1-2 mm next to the edge of the disc remains unswept by the pads.
Just make sure that the entire pad footprint falls into the "braking" area of the disc. As long as it is the case, it won't make much difference where exactly that footprint rides, closer to the center or farther from it.
So it sounds like the appearance of my rotor is normal and nothing to worry about. I will double check that the innermost surface of the pads is not extending past the braking area of the disc.
Thanks for the help! I've learned a ton from this forum and am always grateful for the advice people give.
Last edited by drbenjamin; 10-31-12 at 07:21 PM.