Originally Posted by
dabac
+1
I've run a piece of string over the saddle, to help pinpoint where my sit bones go. Then I use that instead of saddle tip when trying to recreate a known working position on a new bike.
Yep. I have two bikes set up for different positions, with different saddle-bar drop, different frame size and saddle position. When I get out a tape measure and check this, both have exactly the same distance from the flare part of the saddle to the handlebar center. But ironically neither one is set up "right" according to these rules, or the conventional "bike fitting" rules either.