Originally Posted by
vbwstripes
So, how can the 107 and 110 both give me a 42mm chainline? Wouldn't there be a 3mm difference in the chainline between the two spindle lengths?
The 107 or 110mm refers to the length of the spindle. It does not mean that the spindle is symmetrical. The spindle extends the same distance out from the BB shell on the drive side of both bottom brackets because the 107 is asymmetrical. It is longer on the drive side than the non-drive side. It sounds like the 110 is symmetrical, so the 3mm are added to the non-drive side, while the drive side remains the same as the 107.