When I drop the plumb line, from the top tube, to the center of the BB and then from the nose of the saddle, to the chain stay, I have 23mm, where and how do I apply this measurement ? Thanks for any replys.
use a level or angle finder. start off with the saddle level(0 degrees)then adjust to suit.
It means you meet the UCI minimum of 5mm. Go racing!
Not sure how this affects saddle angle though.
Thanks for the replys guys, I thought I was missing something in my bicycle fit for fore and aft.
lots of fit info
set saddle tilt.
set saddle height.
set fore/aft saddle position.