I was going to buy my wheels from longleaf bicycles for the 650b. I was wondering about clearance since the 650b wheels should drop down whole frame which would make it closer to the ground. I was reading on the Harris Bicycle Website the late (Sheldon Brown) about his 650b conversion and he seemed to be an enthusiastic supporter of this. I am thinking about building my Fuji as just another 700c roadbike with roadbike tires or something different to accomodate my advancing age. I am 56 and I no longer have any ambitions regarding a racing bicycle! I really worry about the turning radius on 650b and will the bottom bracket closer proximity to the ground affect my ride?