[Closed] Campag Lever Question

A first its sounds like the mech stops are restricting movement of the mech, check those.

But you say its skipping a gear, presumably in the middle or youd have said not getting all the gears?

Have you combined odd parts, 11 speed mech and 10 shifter for example?

Stato,

I get both the largest and smallest sprokets so high and low are set correctly, the mech is definitely 10 speed as bought with the bike and the lever has a 10 speed part number on it as that was my thought, the skip is usually between 6 and 8. The levers are brand new

It is baffling me

Maybe a bit of swarf or similar in the shifter ratchet or it's not machined properly - when you're pulling on the cable, the tension is enough to get it to engage with the dodgy tooth on the ratchet but when just using mech spring tension it's not and it skips.

Only thing I can think of but if it's brand new then I'd send it back.

Or a slight kink in the gear inner which in the dodgy gear coincides with where it exits the outer (or something similar). Try shortening the outer cable somewhere by 1cm and seeing if the problem is in the same place

Weird. I've run 9s Ergo for 15 years and never seen this.

10 speed campag needs a final adjustment once you have the limit stops set. From the smallest sprocket go down 3 clicks to the 4th one from the outside and set the cable tension with the mech adjuster so that it isn't chattering. Then set the B screw so that the gap between the upper jockey wheel and the largest sprocket is no more than 7mm. I discovered this by accident when reading the tech docs, a year of poor shifting cured in 25 minutes!!

How old?

I can see how you could skip a gear and then hit the stop, so lose a click at the end but already in that gear.

Take the wheel out, back off the mech stops and see if you can get the full number of clicks.

If all parts are new check hanger alignment as that can easilly put you off.

Also, make sure you are using a campagnolo 10s cassette.

From Velotech.
-That with 10s you have a compatible rear derailleur. Derailleurs designed to work with the "Escape" type shifters (Xenon, Mirage 2006 - present, Veloce, Centaur 2006-2008) may not work correctly. In some cases they are fine, in other cases it will be possible to get good indexing in one direction, but not in the other.
-Some earlier versions of the UltraShift lever had internal differences which in service can give shifting issues. If you detach the lever from the handlebar and look at it from the back, if the cable bush (the disc that the gear cable is threaded through at the lever end) is off-white, you may have an early production lever.

thanks for all the comments, levers are new and a direct replacement for the ones that failed.

Mech and cassette are both 10 speed and genuine mech is 2013 levers are 2015.I am going to try the shifting without the wheel to see if I get the full clicks, I also have a spare cable so will try that as well.

If not they are going back to the LBS. Spoke to them today and they had never seen it before so suspect it is a faulty lever. 🙁

Make sure the gear cable is clamped at the rear mech properly. If you've got it on the wrong side of the bolt you'll get indexing problems !!

Taxi25, don't suppose you have a pic of which side it should be?

Cheers

ND

Download the technical manual if this website and it has a pic. http://www.campagnolo.com/AU/en/Components/chorus_rear_derailleur

Got it thanks... Plenty of things to do in the garage tonight to see if I can solve it.

Thanks All

ND

cable routing at the bars ? too tight a radius will have you
chasing ghosts for weeks ... not that I'm speaking from bitter
experience of course, it was a "friends" bike 😉

Right all fixed.. High limit screw 1/2 a turn meant that it was properly aligned with the smallest cog. Also cable routed on the wrong side of the bolt. Both together means I have the full 10 speeds.

Thanks to all that commented, I am a happy if not slightly ham fisted cyclist tonight.