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9-speed spacing Campy and Shimano(6 posts)

9-speed spacing Campy and Shimanorfrancisco
Sep 14, 2002 6:10 PM
Dose anybody know if a Shimano 9-speed cassette has the same spacing as a Campy 9-speed cassette? I have a set of
Shimano wheels that I got, and was wondering if it would work with Campy 9-speed Ergo shifter.
Thanks for any reply.
re: 9-speed spacing Campy and Shimanoxcandrew
Sep 14, 2002 7:38 PM
No, but they are close enough that you won't notice a difference.
Depends on who you talk toKerry
Sep 15, 2002 3:44 PM
Some people report that they work OK on interchange, while others complain that things don't work right. Probably a combination of cog sizes, chainstay length, tolerance of noise/shifting quality, chain and chain maintenance, etc.
re: 9-speed spacing Campy and Shimanorbb
Sep 16, 2002 3:18 AM
Works fine for me!! I have a set of Ksyriums that i got for my Campy Record 9spd equipped Litespeed. My friend and mananger of the LBS suggested I get the shimano freehub body on the wheels because at the time the shimano was a much better model than the campy freehub and the price to outfit a couple different cassette's to the wheels was more affordable with the shimano. I've had them for over two years now and have had no problems with shifting or chain line. Works great!!! Good luck!

re: 9-speed spacing Campy and ShimanoSteve Bailey
Sep 16, 2002 6:14 AM
The spacing is not exact and it can either be OK or sometimes annoying.

I have Centaur Ergo and R derailer shifing a 12-21 Shimano. It ocassionally misses at the low and high ends of the cassette, but I'm generally OK with it.

You can alway's go with a Wheels Manufacturing Campy cassette/Shimano hub compatable setup. Branford Bikes sells these, they run about $110, which is pricy for a cassette, but they work flawlessly.

accurate info....C-40
Sep 16, 2002 1:48 PM
The cog spacing on Shimano 9 speed is 4.32mm. Campy 9 speed cog spacing is 4.55mm. This is a 5% difference, that will accumulate to a minimum of 20% positioning error.

If a campy derailleur moves 4.55mm eight times, it travels 36.4mm. The center of the Shimano 9th cog is located 34.56mm from first cog (4.32 x 8). The difference is 1.84mm. 1.84mm divided by 4.55mm is .40 or 40% off location.

If the derailleur is centered on the first cog, like normal, on the 8th shift the campy derailleur would over-travel by 1.84mm. It would be 40% off location, with the chain trying to jump off the largest cog (and perhaps into the spokes), unless restricted by the limit screw.

The best shifting that you can get requires the rear derailleur to be aligned as closely as possible on the center cog, to distribute the error equally between up shifts and down shifts. The accumulative error will still be 20% in both directions, on the 4th shift. A better solution is to buy an "accelerator" cassette from excel sports, which has the proper spacing ($100) or stick with all campy parts.