Recently I hit a curb on my bike. I heard a cracking sound, my front disk brake (cable) felt stiff, and I could feel a lot of resistance from the front wheel. I left it alone for a few minutes, and when I came back, the brake was back to normal, but I could hear some grinding in the front bearings. I also soon realized that I couldn't stop as quickly as before. Today I took the bearing apart, cleaned it, applied fresh grease and the grinding disappeared. The brakes still were noticeably weaker. I tried smoothing the rotor with sandpaper, but that did not help. What could be the reason?
I was moving at around 25 km/h, the curb was about 3-5 cm
The axle is straight, the dropouts seem to be fine
The cable shroud seems to be a bit deformed, but that deformation does not change how far it can retract
I took the whole caliper apart, sanded the rotor and pads. After reassembling, I think it is a little better, but not as much as it was before. Or that's just placebo, I'm not sure.