2wheels wrote:
What am I missing here? Thanks.
What you're missing is that in this day and age seat tube angle is an antiquated and basically useless measure. Forget the angles, just use XY coordinates ;-)
Just as we can use "pad stack" and "pad reach" for bar position, one should just use "saddle stack" and "saddle reach" (or "saddle offset", if you prefer) for saddle position.
http://bikeblather.blogspot.com/