Clacking / Clicking noise when applying rear brake on
Hi,
Just bought a 2012 Cannondale CAAD10 with the Ultegra 6700 groupset, and during my first couple of rides I've noticed that when applying the rear brake there is a rhythmic, loud clacking or clicking noise coming from the rear of the bike. This only occurs when riding the bike, doesn't seem to happen when I lift the rear wheel up to spin it and apply brake.
The frequency of the noise suggests it *may* be tied to the rotation of the wheel but I'm not a 100% sure of this.
Had a search around this site and the web in general, including Sheldon Brown's site, and the only thing I've come up with is noise from bearings some people have had problems with in this model of bike, but that seems to be something that wouldn't be tied to braking (best guess on my part this).
So yeah, at a loss. Any help would be really appreciated as obviously not too keen to go far on a bike with suspect braking noise, so kind of annoying :-)