The disk pads on push bikes are like this. They ship new with maybe 2/3 mm meat max. Then get wet / shitty / grit etc. Next thing you know as you descend your favourite hill the front disk starts singing to you………..
One of my brothers-in-law had an FS1E back in the 70s. One day he told me his front disc brake had been squealing, but he solved the problem with a couple of drops of 3in1 oil...
One of my brothers-in-law had an FS1E back in the 70s. One day he told me his front disc brake had been squealing, but he solved the problem with a couple of drops of 3in1 oil...