ugh. just swapped my crankset on my Specialized Globe Vienna 02 (think base model Sirrus and you're pretty darn close), from the fugly stock Shimano M191 (Tourney grade, I think?) to an Origin8 Trekking Pro... both square shaft.
The Origin8 is sitting much farther from the frame, such that I had to readjust the front derailleur all the way to its outer limit of travel to get it to shift. Meh. The chainline is all whack, in the middle ring, its about aligned with gear 7 of 8
... yes, I thoroughly cleaned the BB shaft and greased it quite well. I torqued the new crank bolts down about as hard as I could with a long arm allen, but I didn't break out my ratchet hex bits from my motorcycle toolset....
the teeth on the middle ring are sitting just about exactly 54mm from the centerline of the frame.
does anyone know what the 'standard' chainline offset is for a 3x8 700c hybrid ?