Riding home tonight I noticed the rear brake on my bike was gripping unevenly when braking.
It definitely wasn't doing it on the ride in this morning but I did have a puncture on the rear wheel part way in. I didn't notice the problem when I continued on to work, although with all the rain perhaps that hid it.
I've had a look at the wheel tonight and it seems that there is one spot, about 20cm before the valve, where the pads just grip the rim as the wheel rotates while they're clear of the rim the rest of the way around.
Any thoughts on what has caused it and what I should do to fix it?
The Duckmeister wrote:You didn't hit a kerb or something while you had the flat? That could have caused the walls to flare out a bit from the impact.
No - I was in the middle of the road, but it went down pretty rapidly so I ended up crossing a couple of lanes in a hurry to clear the cars. Perhaps that did it. If thats what happened how do I deal with the flare?
I find the most effective way is to use multi-grips, held so the jaws lie along the rim wall rather than perpendicular. Then it's a matter of gently tweaking the wall back into line. You won't get it perfect, but it will be better than it is now. Over time the abrasion from the brake pads will smooth any remaining kink out.