1-level your bike

2-drop a plumb line in the point of the saddle where you seat during a ride

3-measure the distance (parallel to the ground) from the plumb line to the botton bracket

4-measure the distance between botton bracket and saddle (same point where you have drop the plumb line)

5-with a calculator at hand calculate (Distance number 3)/(distance number 4) and with that result calculate the inverse of cosine (this will give you the angle formed by the 2 distances)

This should give you the exact seat angle

my english its not great but i hope this helps



Sergio From Portugal

---

=====================================
S�rgio Marques
When it hurts is when it feels good ;-)
Sergio-Marques.com

Sergio is bucking to be the replacement Slowtwitch mathemetician. His advice is on target, except most people just measure to the middle of the saddle.

The chart you're looking for is on this site.
http://www.slowtwitch.com/mainheadings/techctr/bikefit.html

thanks guys, I've got my bike setup in a pseudo-slam position.. gonna try a 74-75 degree setup. It's a road gemoerty bike, Kestrel Talon.. which I still want to keep in a roadish kind of mode. Too lazy to swap out my roadie handlebars.

mike