Originally Posted by
one4smoke
The reach on my Roubaix is too long. I'm gonna change out my 110mm / 12° stem for a shorter one, maybe a 90mm or even a 75mm. If I go with the 90, should I consider a 17° angle to compensate for the slight bar height loss? Or, if I go even shorter with a 70mm stem, would a 24° angle be the way to go?
You can compare the current setup with either of your options with this online calculator:
Stem Comparison Tool | yojimg.net
Play with the angles of the new stem, as well as with the thickness of the necessary shims.