Every morning, when I ride my bicycle, there is a very loud squeak coming from the brakes. I have an aluminum rim (I think that they are of the sprint type) and rubber pad brakes. A couple of brake events afterward end that and after that the breaks are silent. I suspect it has something to do with the morning plumpness but yet:
- Why would a damp rim give a noise under friction?
- Why is it so loud? There is no amplification mechanism I can think of in the braking system.
Photos 1 and 2 are taken from wikipedia, photo 3 is taken from a reparto corse