I've changed my bottom bracket over the years several times and now am using ISIS.
I know what BB30 is but I've never seen a frame that is setup for the BB30 without it.
Am I getting the impression that a bike frame has to be built for the BB30? and no other BB can be used? If so, this means I can't decide to put a BB30 on my bike that is currently using ISIS?
Looking at the bb frame, what does the setup for a BB30 look like? How does it differ from the "normal", such as the threaded bb for using ISIS, Octalink, etc.