So, going back to the original post, it appears absolutely necessary to have an accurate measurement of the lineal offset to use this formula. What I don't see is a practical way to arrive at this on a real bike, assembled, with fender,wheel and tire in place. How the hell do I do this?
the Red Menace
"I know this twatwaffle whose ego is so big he doesn't have room to pack anything else on his bike. Sad, really." http://youtu.be/GwZlrWPSTHg