Can you tell us a bit more about the set-up? What brake calipers are you running? How heavy are you? Have you checked the headset?
I'm running 2011 SRAM Red calipers with black Kool Stop pads - plenty of meat left in them. I'm a meagre 64kgs and my headset is all preloaded and the stem all torqued to 5nm...
Zen Cyclery wrote:
Check brake toe. The pads could also be glazed over which may cause resonation.
Yep, I've checked the brake pads and they're toed in and not glazed
The rim could just be bad but if you don't have a warranty you might be able to fix it. If you run your fingernail over the rim where the two ends are joined you will likely find a edge where they they don't perfectly align together. If you file or use a sharpening stone to smooth it out the shudder will be greatly reduced and as the rim wears it will gradually go away.
I thought the same thing, but the rim join is actually pretty smooth!
Thanks again for everyone's great suggestions. I think I'll just have to bite the bullet and get a new rim. I've read (just after I bought the rim to be built) that it isn't an uncommon problem. Would it pose any dangerous problems to my full carbon Specialized fork? I can see it flexing back and forth a bit under medium braking (That's 'flexing' not rattling due to loose headset