Well, I have been rocking the bike back and forth all afternoon, and the more I rock, the more I think my front brake could be the culprit. It only knocks when the brake is on, I haven’t been able to reproduce the fault without the brake.
That front brake har always been a little strange, for example, when you hit the brake, it makes a clicking sound. You can sort of “hear” all the individual holes in the Shimano XT Rotor I’m running. Does that make any sense?
The bolts are tight, and the caliper doesn’t move, så I have to assume that the brake pads are moving somehow…