I'm in the process of changing a '99 9-spd Record group from 9 to 10 spd. I've replaced shifter index and lever cogs along with new G springs. The rear derailleur is unchanged. A used Campy 10 spd chain is on the bike and Campy 10 spd cogset mounted to the wheel. After adjusting the cable and derailleur to the 12 cog, shifting is OK to about halfway up the cogset. When I shift to the larger end, the shifting becomes less exact and I can't get the chain to stay on the largest cog. It's almost like there isn't a 10th detent on the index. In addition, the shifter slips on the larger cogs and won't hold the gear. Any ideas on what I'm missing? TIA.
"Host Al" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
I'm in the process of changing a '99 9-spd Record group from 9 to 10 spd. I've replaced shifter index and lever cogs along with new G springs. The rear derailleur is unchanged. A used Campy 10 spd chain is on the bike and Campy 10 spd cogset mounted to the wheel. After adjusting the cable and derailleur to the 12 cog, shifting is OK to about halfway up the cogset. When I shift to the larger end, the shifting becomes less exact and I can't get the chain to stay on the largest cog. It's almost like there isn't a 10th detent on the index. In addition, the shifter slips on the larger cogs and won't hold the gear. Any ideas on what I'm missing? TIA.
Al
You probably have the cable attached on the wrong side of the changer anchor bolt. It should just be nipped under the OUTSIDE of the bolt. If it passes under the inside then the pull and motion change during the stroke and it can be adjusted to work only over about 1/2 the cassette. The rest of what you did is OK in practice.
Probably need to tighten the cable a bit more. I've found that shifting on the road is often different than shifting on the stand. Anyway, put the chain into the region where the problems occur, then adjust the tension.
If all else fails, get the hanger alignment checked.
Host Al said:
I'm in the process of changing a '99 9-spd Record group from 9 to 10 spd. I've replaced shifter index and lever cogs along with new G springs. The rear derailleur is unchanged. A used Campy 10 spd chain is on the bike and Campy 10 spd cogset mounted to the wheel. After adjusting the cable and derailleur to the 12 cog, shifting is OK to about halfway up the cogset. When I shift to the larger end, the shifting becomes less exact and I can't get the chain to stay on the largest cog. It's almost like there isn't a 10th detent on the index. In addition, the shifter slips on the larger cogs and won't hold the gear. Any ideas on what I'm missing? TIA.
On Sat, 02 Sep 2006 04:17:15 GMT, Host Al <[email hidden]>
Quoted message said:
I'm in the process of changing a '99 9-spd Record group from 9 to 10 spd. I've replaced shifter index and lever cogs along with new G springs. The rear derailleur is unchanged. A used Campy 10 spd chain is on the bike and Campy 10 spd cogset mounted to the wheel. After adjusting the cable and derailleur to the 12 cog, shifting is OK to about halfway up the cogset. When I shift to the larger end, the shifting becomes less exact and I can't get the chain to stay on the largest cog. It's almost like there isn't a 10th detent on the index. In addition, the shifter slips on the larger cogs and won't hold the gear. Any ideas on what I'm missing? TIA.
The derailleur cable may not have enough tension so that you are not geting first click. What you think is the #1 click is actually #2. Disconnect the cable from rear derailleur and hold in your fingers and work the shifters. Look for 9 clicks using the shift ever and then down with the mouse ear. If you don't get them all, you likely didn't wind the watch spring tight enough on assembly.
One should also install change out the 9sp shift cam for a 10 sp one. This part resides on the front end of the shifter and requires removal of the through bolt, the through bolt holder spring, and the shift lever. The part is inexpensive but there is more labor. Not replacing that cam, you will find that the shift lever will require different amounts of throw. The travel will need to be most when going from 9 to 10. I'd say most conversions do not do this part.
All of these are good responses but I believe the problem is in the shifter (Paul, I did replace both cams.)
More ifo on the problem: I can get on to the largest cog by holding in on the inner shift lever but as soon as I release there is a click and the chain drops down to the second largest cog. Also when downshifting there is a double shift on the top half of the cogset no matter how lightly I press the downshift button. This leads me to believe that the downshift button spring needs replacing.
All of these are good responses but I believe the problem is in the shifter (Paul, I did replace both cams.)
More ifo on the problem: I can get on to the largest cog by holding in on the inner shift lever but as soon as I release there is a click and the chain drops down to the second largest cog. Also when downshifting there is a double shift on the top half of the cogset no matter how lightly I press the downshift button. This leads me to believe that the downshift button spring needs replacing.
Al
Nope-take it apart and see if the spring carrier is split..EC-RE-111...a gentle tug on the ring and you 'may' see the split next to the post.
"Qui si parla Campagnolo" <[email hidden]> wrote in news:[email hidden]:
Quoted message said:
Host Al said:
All of these are good responses but I believe the problem is in the shifter (Paul, I did replace both cams.)
More ifo on the problem: I can get on to the largest cog by holding in on the inner shift lever but as soon as I release there is a click and the chain drops down to the second largest cog. Also when downshifting there is a double shift on the top half of the cogset no matter how lightly I press the downshift button. This leads me to believe that the downshift button spring needs replacing.
Al
Nope-take it apart and see if the spring carrier is split..EC-RE-111...a gentle tug on the ring and you 'may' see the split next to the post.
Nope, not cracked. I degreased it and looked at it under a 10x loupe, No cracks
On Sat, 02 Sep 2006 13:17:49 GMT, Host Al <[email hidden]>
Quoted message said:
This leads me to believe that the downshift button spring needs replacing.
That spring is not sold. You'd need to buy the entire button assembly.
On a used lever, what you describe is what happens when the a 'g' spring is shot but you replaced those. Maybe the cam isn't seated properly or the thin washer has it bump upside down?
Paul Kopit <[email hidden]> wrote in news:[email hidden]:
Quoted message said:
On Sat, 02 Sep 2006 13:17:49 GMT, Host Al <[email hidden]>
Quoted message said:
This leads me to believe that the downshift button spring needs replacing.
That spring is not sold. You'd need to buy the entire button assembly.
On a used lever, what you describe is what happens when the a 'g' spring is shot but you replaced those. Maybe the cam isn't seated properly or the thin washer has it bump upside down?
Paul - I think you are talking about the spring under the button (p/o EC- RE-204). I was thinking about button assy return spring (EC-RE-215).
The only thing left that I can think of is the shift lever index cam (EC- RE-062). I'm pretty sure I inserted it the same way the old one (EC-RE- 133) came out. But I have no way to verify which side goes forward (and I don't know if it is in wrong if would cause the shifter to behave the way this one is).
On Sat, 02 Sep 2006 13:17:49 GMT, Host Al <[email hidden]>
Quoted message said:
This leads me to believe that the downshift button spring needs replacing.
That spring is not sold. You'd need to buy the entire button assembly.
On a used lever, what you describe is what happens when the a 'g' spring is shot but you replaced those. Maybe the cam isn't seated properly or the thin washer has it bump upside down?
'Downshift-that is going to an easier cog, is the thumb button..which is sold..the other spring in the shift lever is just there to center the lever, that is sold as well. I also think the leer is not aseembled correctly as well. pretty simple mechanism but does need to be 'seated' to have the shift disc engage the springs properly.
Paul Kopit <[email hidden]> wrote in news:[email hidden]:
Quoted message said:
On Sat, 02 Sep 2006 13:17:49 GMT, Host Al <[email hidden]>
Quoted message said:
This leads me to believe that the downshift button spring needs replacing.
That spring is not sold. You'd need to buy the entire button assembly.
On a used lever, what you describe is what happens when the a 'g' spring is shot but you replaced those. Maybe the cam isn't seated properly or the thin washer has it bump upside down?
Paul - I think you are talking about the spring under the button (p/o EC- RE-204). I was thinking about button assy return spring (EC-RE-215).
The only thing left that I can think of is the shift lever index cam (EC- RE-062). I'm pretty sure I inserted it the same way the old one (EC-RE- 133) came out. But I have no way to verify which side goes forward (and I don't know if it is in wrong if would cause the shifter to behave the way this one is).
Al
With the '9' facing forwards...toward the front of the bicycle.
All of these are good responses but I believe the problem is in the shifter (Paul, I did replace both cams.)
More ifo on the problem: I can get on to the largest cog by holding in on the inner shift lever but as soon as I release there is a click and the chain drops down to the second largest cog. Also when downshifting there is a double shift on the top half of the cogset no matter how lightly I press the downshift button. This leads me to believe that the downshift button spring needs replacing.
I know you said the derailer was unchanged but... is it possible that the limit screw needs to be adjusted? Maybe you replaced the cassette, or the derailer was bumped and misaligned somehow, or....?
-- Dave dvt at psu dot edu
Everyone confesses that exertion which brings out all the powers of body and mind is the best thing for us; but most people do all they can to get rid of it, and as a general rule nobody does much more than circumstances drive them to do. -Harriet Beecher Stowe, abolitionist and novelist (1811-1896)
