I've found some new territory to ride in and I've found that the braking power of my v's might compromise my safety/health in some of the steeper sections. Much of the new terrain is grass and it's often moist, so I think it's time to put a disc brake on the front. I've decided on the bb7, though I know nothing about hubs. I don't know which hubs are of a quality build, what I should be looking for, how to install the new hub, etc. Please educate me!