Michael Collett has been having problems with his drive train, he has bought a new chain and cassette and things are better, but not perfect as it still skips. He wants to know if this can be fixed by rear gear adjustments or if he will have to buy a new chain set also? Here is what we think.
Question: My Campagnolo Veloce 9 speed started skipping when pushing hard. As it has done several thousand miles I changed the chain and rear cassette. It now runs noticeably smoother in all respects except that it still skips. Can this be fixed by adjustments or will I need to replace the chain set as well.
Normally the chain set lasts a lot longer than the chain and cassette and should last you many years before needing replacing. If it did then you can replace the chain rings without having to replace everything, unless you want to up grade, of course.
To tell if your chain rings are worn, or more precisely the teeth on the chain rings, if you can lift the chain off the chain ring teeth at one point while the chain is still wrapped round the chain ring, then it is worn, or look at the teeth on the chain ring, are they hooked?
As you look at the tooth from the chain set side, leading face of the tooth or the right side, doesn’t look like the other side, it has a hook look about it? If so then it is worn. As I said before the chain rings take a lot longer time to wear than the cassette, due to them being bigger and having more teeth to wear out.
First, does it skip on all the gears? If so it’s probably a cable adjustment that is needed. Make sure that the chain is running OK on the smallest cog on the cassette and doesn’t need the adjusting screw turned to let the rear mech move out or not go as far as it is doing.
If this is good then change from the first sprocket to the second, if it is not moving up enough then you need to tighten the cable with the adjuster on the rear mech, if it is going to far then you need to let the cable out a little.
Once you have the perfect change between the first and the second cog on the cassette then all the others should be good too, run through all the gears on the big and small chain rings to make sure they are good and that should be you with perfect gears.
If it is still skipping then it is possibly a stiff link and as this is a new chain it will probably be the link that was used to join it, its always a good idea to clean a new chain as it is packed with a very sticky grease that it used to stop the chains from going rusty when they are in transit or in storage.
Clean the chain with degreaser or a thin oil and remember to re-oil it afterwards, it will run much more smoothly. If all this doesn’t help drop us another line and you can let us know how you get on.