Originally Posted by
Bill Kapaun
Apparently, you missed the entire point.
Well, maybe I did. The OP is trying to figure out what size bottom bracket to install in his bike.
He is going about it wrong, using the wrong measurements. You don't use the measurement from the inner chainring to the stays. I believe the Barnett manual specifies a minimum of 2mm clearance there, but that's not your primary measurement.
So I thought the point was "How can I tell what size bottom bracket is right for my bike?" and I provided some direction along with links to further reading on the topic. Not what he's looking for?