Originally Posted by
bikinfool
Not sure what you're thinking about but the BB7 (formerly BBDB) is virtually the same since inception, still one stationary and one moving pad. I'd have to compare setup instructions side by side but can't think of a difference off the top of my head (well, other than the old version used magnets instead of a spring to retain pads). I've been using them since they came out, have both old and new models.
My guess is that frankenmike is referring to both or one of the pads being adjustable. On the BB7 both pads can be adjusted in and out though only one pad moves whereas on the BB5 only one pad can be adjusted and again only pad moves.
Originally Posted by
bikinfool
I doubt increasing torque on such small screws is a good idea in any case, the lower torque is sufficient and breaking off the head of a screw in your hub might not be any fun. I hadn't noticed the misprint on the current manual on their site, though (and it's there right now, just had a peek). Harmonic vibrations happen with rim brakes on some bikes, too FWIW; I'd guess it had more to do with readjusting your caliper (but I haven't looked at your other thread either for more details).
Can you point me to the online manual that shows 6.2 N*m for the rotor bolts? This online manual shows 9-10 N*m:
http://www.sram.com/_media/techdocs/...%20Rev%20C.pdf
Here's a link to my other thread:
http://www.bikeforums.net/showthread.php?t=499350
Do note that this was NOT a harmonic vibration. I've experienced squealing brakes before and this vibration was nothing like that. The whole bike shook so much that the cables rattled against the headtube.