blastguardgear said:
BB7s are mechanical brakes, but I was very happy with a set for years. Easy to service and adjust. And a new set can be had pretty cheap. If you are mechanically handy, replacing the lever only may not be difficult. But a new set of brakes should be plug and play. It is likely your Avid rotors have a 6-bolt mount and Shimano favors a centerlock mounting style. So a swap to Shimano hydraulics could mean a different set of compatible wheels.
The caliper doesn't care how the rotor is mounted to a disc hub as long as it has the correct diameter ...
FWIW. MY limited observation of a handful of disc hubs is that a centerlock hub weighs less than a 6-bolt ISO hub ...
And, the centerlock rotors (probably) weigh less because of the (presumably) alloy spider.
Shimano has centerlock adapters which accept traditional 6-bolt rotors, BTW.
If you aren't racing (
it probably takes less than 1/4 the amount of time to replace a centerlock rotor), then you can wait until you are replacing your hubs-or-wheels before ponying up for centerlock compatible hubs.