I recently installed the new (and complete) 2007 Chorus grouppo on my 2005 cevelo soloist.
The problem that I have, is making the braze-on front derailleur to shift down to the small chainring
There are two main issues, and the second is a result of the first in this case:
First, the chain rubs on the inner side of the cage when it’s positioned on the lowest gear (largest cog). Loosening the adjusting screw doesn’t change anything… it keeps rubbing.
The chain shifts to the large chain ring without problem. The second problem occurs when I try to shift down again to the small chain ring; which doesn’t happen.
I've tried the following without succes:
-adjusting the derailleur as close as possible to the teeth on the large chain ring.
-loosing the cable tension to ease the travel from the large to the small chain ring.
-loosing the "lower limit" adjusting screw.
-the cage is as parallel to the chain rigs as possible.
I'm thinking that maybe with the UT cranks, the chain rings are closer to the BB; so close that the derailleur doesn't have enough travel to go down to the smaller chain ring. Therefore, it gets stuck on the large chain ring when shifting to the smaller.
Another difficulty with this bike is that with the internal cable system, I have no means to fine tune the cable tension once everything is set up.
Here are some pics and videos depicting the problem.
video 1: http://video.google.ca/videoplay?doc...77787&hl=en-CA
video 2: http://video.google.ca/videoplay?doc...99331&hl=en-CA