|Campy Chorus front derailleur adjustment...||DINOSAUR|
Jul 19, 2002 5:10 PM
|New Campy Chorus 10 group, has Record Ergo levers, less than 1500 miles on brand new bike. When I shift from the small ring to the large, I click all the way through on the lever until it stops, but it won't move onto the large ring. Then if I give it another push it moves onto the ring. I'm thinking cable stretch, but I took in all the slack on the downtube barrel adjuster (clockwise) and no luck.
Before I go any further, I'm thinking take out the nut on the cable fixing bolt, pull out all the slack with a pair of plyers and and that should do it. I've tried adjusting the high-gear limit screw and it didn't do anything. Driveline is clean and spotless as I wipe it down after every ride and apply a light coat of lube. It was working flawlessly when it was new and just did this once and awhile but the last couple of days I have resorted to this method in order to change from the small ring to the large. No problem shifting from the large ring. Bike has free tune up (yeah I know) but I don't want my bike down for a week and this simple stuff I should be able to do by myself. I just don't want to mess with it until it gets so far out of whack that I can't ride it...
|Sounds like the cable||Kerry|
Jul 19, 2002 5:36 PM
|Your intuition sounds right - take the slack out of the cable. You should be able to test this by shifting (attempting to shift) and then pulling the cable with your fingers. If it goes up the to large ring easily, then you just have to much slack in the cable. Another check is to shift all the way down - there should be minimal slack in the cable with the derailleur all the way to the left (as seen from above).|
|re: Campy Chorus front derailleur adjustment...||Leroy|
Jul 19, 2002 7:02 PM
|Dino, this happened to me yesterday. I sent the left lever all the way over to the right to shift to the 53 chainring. The centaur front derailleur 'tried' but the chain stayed put. I pulled over and checked the alignment to make sure the der.'s outside edge was aligned with the large ring - it wasn't. I lined it up and the shifts worked after that. I tightened up the shift cable later.
Jul 20, 2002 7:51 AM
|I rode it today after the cable tightening. Although the alignment needed truing, more tension in the cable did the trick.
Jul 20, 2002 8:18 AM
|I fooled around with my bike in the garage last night. I can't seem to get anymore tension using the downtube barrel adjuster (clockwise or am I turning the wrong direction?).
I'm also wondering if this is normal for the Campy 10 speeds, I went through the Zinn book last night and it reads (page 70-Front Campagnolo Ergopower-left-hand lever:)
"To shift to a larger chainring push the finger lever to the left (inward) with your fingers. If the chain does not climb up the outer ring, give it another shift and it will."
So if I push the lever twice it works with no problems and maybe this is normal (?). Although when the bike was new it just took one shove. I attempted to loosen the cable fixing bolt so I could take in the cable slack for the front der and it wouldn't budge, the whole der moved.
So I'm thinking that I have a free tune up coming anyway and to call up my LBS and make an appointment and have them go over my bike and in the meantime I can ride my old reliable Klein. I remember when I was deciding on whether to go with Chorus or Dura Ace a friend mentioned that I would miss the Shimano front derailleur, I guess he was right...otherwise I'm happy with the Campy group...
Jul 20, 2002 3:01 PM
|It was the front der cable slack. I messed with the downtube barrel adjuster while on a ride today. Needs to be turned counter-clockwise to tighten up the slack and did so in very small increments (about 1/8 of a turn) until it shifted onto the big ring with no problems. For some reason this didn't work in my garage but only under load when I was riding. I guess this new era Campy stuff needs fine tuning all of the time, the last time I had Campy it was downtube index shifting on an old steel road bike. An old dinosaur learns something new everyday...|
Jul 20, 2002 4:12 PM
|I didn't think my cable had stretched but it had. I ended up moving the der. as far inside as it would go [down on the left thumb lever], screwing in, clockwise, the downtube adjuster, releasing the der.'s allen-bolt securing the cable and tightening it at the bolt with pliers holding the tension while I tightened the bolt at the der. This shortens the throw on the lever shifting to the 53 ring, too.
And this way, any more stretch and I can use the downtube adjuster again.
It's not just 10 speeds, mine's a 9 and it did the same thing yours did. Good luck with it; when ergos work right there's nothing like 'em.
Jul 20, 2002 6:25 PM
|Thanks for the tip, if my method doesn't work I'll try yours.|
Jul 21, 2002 2:19 PM
|I have had campy chorus on my bike that is one year old and going on 6000 miles. I did alot of fine tuning for about the first 1500 to 2000 miles and since then it has been rock solid. The only adjusting I have done since then was when I put on a new chain.|| |