I'm in the end stages of converting my Specialized Sirrus from flat bar to drop bar. I have a set of used Sora brifters and a used Sora triple derailleur installed, and i'm trying to complete the tuning of it. The bike has the Sugino crank that shipped with it.
I've looked at Park Tools and other sites to get the info on the setting the limit screws & derailleur positioning. At this point, I can successfully:
Shift from small to middle
shift from middle to big
Shift from middle to small
However, I cannot get the derailleur to shift down from big to middle. Related to this (I think) is that I seem to keep the cage from rubbing the chain while on the middle chainring.
I suspect this is related to cable tension. However, it appears that I don't have the ability to fine adjust tension on the front derailleur now - the adjustment was at the shifter on the flat bar, now removed.
my question - is my inability to fine tune due to cable tension (as opposed to limit screws), and, if so, does anyone know where I can get a in-line tension device? The frame has guides on the down tube where the housing sits in. I did a bit of searching last night but could not find anything.