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New Shimano chain skipping on Campy cassette

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5.6K views 17 replies 7 participants last post by  abicycledoc4u  
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#1 ·
I have a Miche Racing box hub for Campagnolo combined with a Shimano 9 speed drivetrain. How does this work? Simple: a Campy Veloce 9 speed cassette with individual cogs separated by Miche Shimano spacers in between.

In the past I have had absolutely no problems with this setup when running a Shimano Chain on it. I believe it was a HG53 (Tiagra level).

However, due to worn out cogs, I decided to replace the cassette and buy a new chain.

I installed the cassette in the same way as the previous one: spacer before the bigggest cog, every cog separated by one Miche 9 speed spacer for Shimano except for the last cog, which has a built in spacer, lockring and voilà..... Except that the chain is now noisy and skips on the cogs. This is a Shimano HG73 chain.

I tried the cassette with the new chain and also on another 9 speed bike with a slightly more broken in chain and at both times there was excessive chain noise and mild skipping?

How can I solve this? Would another brand or type of chain solve the issue?
 
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#2 ·
I'm surprised this has ever worked. Miche spacers are designed to work with Miche cogs; generally the cogs are wider than there Campy or Shimano counter part. While I don't have the exact numbers, a Miche cog is about 1.9mm while a Shimano 9 is 1.78 and Campy 9 1.75. This means the Miche spacers will be thinner to create the same spacing. As a guess I'm thinking your Miche Shimano spacer is about 2.3 and it needs to be 2.56. Correct this issue and you'll probably have better luck.
 
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#3 ·
onespeedbiker said:
I'm surprised this has ever worked. Miche spacers are designed to work with Miche cogs; generally the cogs are wider than there Campy or Shimano counter part. While I don't have the exact numbers, a Miche cog is about 1.9mm while a Shimano 9 is 1.78 and Campy 9 1.75. This means the Miche spacers will be thinner to create the same spacing. As a guess I'm thinking you red Miche Shimano spacer is about 2.3 and it needs to be 2.56. Correct this issue and you'll probably have better luck.
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I have the grey Miche spacers. They are for 9 speed.

It is interesting what you say about the thickness of the cogs. I knew about the numbers for Shimano and Campy (only 0.03 mm difference, so negligible). I always assumed the Miche spacers were 2.56, but if the cogs are thicker and the spacers thinner, then I now have a reduced 9 speed cassette given the fact that the campagnolo cog is already slightly thinner, so if the Miche spacer is too, thgn the distance between cogs will be well enough off to cause problems.
 
#7 ·
What sort of skipping are we talking - right/left indexing type skipping, or the chain skipping over teeth under load.

If it is index type problem, and you have adjusted the indexing from the center cogs, then check to make sure that the hanger is aligned with the proper tool. A slightly tweaked hanger will act just like an incorrectly spaced cassette.

Another thing that will do that is having the cable coming off the RD cable bolt at a weird angle.

If there is any question about spacing, hold a 9 speed Shimano cassette backwards above yours and see if they line up. That will tell you more than playing with cable tension or measuring spacers.
 
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#10 · (Edited)
I'm not sure how much you want to pay into this. What you really need are some Shimano 9 speed spacers (as you mentioned before Camy and Shmano cogs are pretty much the same thickness. You can buy then on line, Shimano 9-Speed Sprocket Spacer, 2.56mm Y10R03000 for $3@, but my guess is if you troll some LBS or even check your parts bind you be able to dig some up, or even check if you have an old 9 speed that you can break apart.

Edit: I just checked my parts bin and I have 5 spacers I scavenged for an old 9 speed deore cog that wore out; they are plastic and probably a little fragile, but they're yours if you want them.
 
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#13 ·
Why do people do this kind of crap?

Buy the correct parts. Don't use Campy wheels with a Shimano drivetrain. Don't try to put 2 different brands of cassette parts together to make a working cassette.

Problem solved.
 
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#14 · (Edited)
If you don't understand it, there is no explaining it to you :cool:

If for no other reason many, myself included do not like Shimano shifters, they are expensive, fragile and have a limited life; however Shimano wheels/hubs, and derailleurs are more plentiful in the US, there is also a greater variety of cassettes to chose from and they are usually cheaper (i.e. Campy 2011 Centaur Cassettes-$170; Shimano Ultegra Cassette $112). The most common mix and match are Shimano drive train and Campy shifters. Campy shifters have a different feel, more ergonomic while riding on the hoods, dedicated levers so you don't have a noodlely brake lever, many also prefer the more pronounced shifting then the super light touch of Shimano, and Campy shifters are rebuildable. Above all it may simply boil down to cost. When my Ultegra 9 speed shifters died, I couldn't find a replacement. I could either spend the money to upgrade everything to Ulterga 10 speed (about $1000) or I could buy a set of Centuar 10 speed shifters for about $250 and use a easily done modified cable routing that lets me use the rest of my Shimano drivetrain. Problem solved! :thumbsup:
 
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#18 ·
Well, I was just going to absorb all you had to offer about "custom" drivetrain builds. Decided to jump in with both feet. I have a late '80s Paganini Mistral which I've built from a bare frameset. All Campy drivetrain & brakes. The wheelset is my build-up. My bike, my choice! Shimano HG 9spd using Miche Shimano 10spd gearset minus 1 cog (11/12/13/15/17/19/21/23/27). Ft chainwheels 39/53 on a Campy 10spd crank, Campy Chorus 9spd rr derailleur finished off with with Campy 10spd and bar-end shifters. I have crippled hands & they work for me. Does this combination work? Nice, slick & quiet! Now, why didn't I use Campy? Parts availability, price & I'm one of those who like the Shimano hubs. Questions?
 
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