You're aiming for 42mm, so if it's about 37 or something, pick up a 108mm BB and check whether you reckon the extra 5mm will allow you to clear the chainstays, or if it's more get a longer one. Also check whether the BB you are using is JIS or ISO and get the same or adjust accordingly.
You're aiming for 42mm, so if it's about 37 or something, pick up a 108mm BB and check whether you reckon the extra 5mm will allow you to clear the chainstays, or if it's more get a longer one. Also check whether the BB you are using is JIS or ISO and get the same or adjust accordingly.