bikerboyd

So I just installed and aligned my new bb7 disc. It's loud. Very loud. Is this a problem with my alignment or just a characteristic of new discs/pads?

bikinfool

Don't know what loud means to you. Discs aren't necessarily silent. If it's unusually loud I'd definitely recheck my caliper alignment first....look very carefully at that caliper/pad alignment from a few perspectives, and use a bright flashlight to help. Once they bed in, the sound can change as well...

bikerboyd

A screeching sound varying in pitch, around 50-60 dB. It can be heard roughly 200 yards away when there's no interfering noise.

bikinfool

Yes, that would be annoying Rear caliper?

bikerboyd

no, it's the front. I rode it around a bit, putting heavy pressure on the break and mashing the pedals. It got better for a while. Maybe it's a heat issue? I don't know. I'm going to ride hard today and tomorrow, try to ignore the screech, and see what happens. On the bright side, at least hikers will know I'm coming on the downhills..

-_RebelRidin'_-

Have you touched the Rotor by chance?

Touching the rotor can contaminate them and cause a screech.

try cleaning the rotor with Rubbing alcohol and a lintless cloth.