Update on progress so far.
I have procured a pair of Centaur Carbon 10 Speed Ultra Shift Ergo's to replace my Centaur 10x QS units :-
https://www.evanscycles.com/campagnolo- ... y-EV335007(Big thanks to BrandlingBicycle for the heads-up)Fitted them today and up to now things have not progressed smoothly. Yes they fit and yes they work.
First problem is they come with "Torx" headed screws for the bar fitting. I do have Torx bits but with all the attachments they are awkward to use especially with the hoods still in place. Without the hoods then a lot easier.
What I have done is swap the Torx "nuts" with the old Allan key "nuts" of the old Centaur. A lot easier to access now with an Allan key.
Second problem, and lots of huffing and cursing, is fitting the cable wires through the grooves of the Ergos. Hidden out of site are very small metal rings. The cable outers butt up against the back of these rings and the wire has to go through these.
My wires wouldn't go through and in the back of my mind I seem to remember reading about Campag' "Ultra Shift" needing special cables.
These little rings, and they are little, pushed out with a bit of force and this allowed my wire to go through.
Even without the rings it takes some patience to complete.
Missing out these metal rings may allow the guides to wear out quicker so will have to wait and see.
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On inspection of the old QS units, yes the "ratchet" is plastic as can be seen in the photos.
(click to enlarge.)This is the right hand Ergo and the front ratchet was covered in coagulated grease.
Just maybe if I had known this and cleaned it out then it may have cured the original problem.
This ratchet comes into use when the thumb button is depressed. As the button is pressed a tooth goes into the teeth and only allows one click at a time. So to move to a smaller sprockets you have to do numerous clicks as needed.
Behind there is visible another "ratchet" and this I think is the one for moving to larger sprockets. You can move 3 sprockets at a time. The cable end goes in the hole at the bottom of the ratchet.
The left Ergo.Similar to the right but a lot less teeth on the Ratchet.
This gives 5 clicks to go from small ring to big ring. I suppose it, in theory, allows for either a double triple chainset.
Going from big to small ring is only 3 clicks so that is "quick-shift".
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The new Ultrashift Centaur units are different in their shifting. With one push the right hand is 3 clicks small sprocket to large and 5 clicks large to small. One push on the left lever has 5 clicks up and 5 clicks back. Again will probably do a triple as well as a double. Obviously you can just do one click at a time for one cog on both levers.
At the moment I have the cable over the pip on the front mech' but I may try it under to see what difference that makes.
Finally the ratchet gears on the Ultrashift are metal so should have a good life span. Can you get spares for repair.
The plastic gears on the 2008 QS Centaur have lasted 10 years of fair weather riding.
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