Mixing 10 speed Components

crewman said:

So now that Shimano has stepped up to the 10 speed world, has anyone played around with mixing Campy groupos and Shimano groupos.
Why am I asking this you ask. I'm putting together a spare bike and am trying to hold the cost down. I normally run Campy Record but have not had to buy new stuff for the last three years. I have everthing except the rear derailure and an extra set of wheels. I was pricing out a rear derailure and almost flipped at the cost. I even checked out Chorus and Centaur. So, will a Durace 10 speed rear derailure work with Campy 10 speed shifters and Campy cassette. I am told the only factor might be the Paralellagram of the derailure.
What are the experts saying.
FYI Shimano Durace rear derailure is not only half the price of a Record but weighs in at a scant 8 grams lighter (for all you weight weenies)

Campy and shimano RD are generally incompatible due to different throw ratios. There is a device called a shiftmate that makes them work together. Do a google search.

boudreaux said:

Campy and shimano RD are generally incompatible due to different throw ratios. There is a device called a shiftmate that makes them work together. Do a google search.

I checked out the various combinations but they did not note the one I would be using and that is campy 10speed shifters and cassette and Shimano rear derailure.
The best site that explains each different shiftmate is this one.
peterwhitecycles.comShiftmate.aspOpen ↗

I understand about the difference in shifters and cassettes spacing but the Campy shifters and Cassette are a match. The odd man out would be the derailure.

crewman said:

I checked out the various combinations but they did not note the one I would be using and that is campy 10speed shifters and cassette and Shimano rear derailure.
The best site that explains each different shiftmate is this one.
peterwhitecycles.comShiftmate.aspOpen ↗

I understand about the difference in shifters and cassettes spacing but the Campy shifters and Cassette are a match. The odd man out would be the derailure.

THe deraileurs have differnet geometry between Shimano and Camapgnolo. THe shifters pull the cable different amounts and the cassette spacing is different. That does not mean that they are different by the same amount.

THis whole issue begs the question why bother putting top class stuff on a spare bike? Can't you just get a centaur or chorus deraileur? They'd be cheaper than either Record or Dura Ace.

tafi said:

THe deraileurs have differnet geometry between Shimano and Camapgnolo. THe shifters pull the cable different amounts and the cassette spacing is different. That does not mean that they are different by the same amount.

THis whole issue begs the question why bother putting top class stuff on a spare bike? Can't you just get a centaur or chorus deraileur? They'd be cheaper than either Record or Dura Ace.

If I was using a Shimano cassette and Shimano rear derailure than yes I could see the problem. I am using a matched set of shifters and cassette all being campy. There is no difference in shifting distance. The only difference is the derailure. It is indexed by the shifters is it not?.

As for It's just a spare bike". Maybe I should have left that out and said I was building a new bike. Checking an online seller from Canada who deals in U.S. dollars as well labicicletta.comtlsstore.cgiOpen ↗

You can see the prices as follows
2004 Centaur $99
2004 Chorus $179
2004 Record $239
2004 Dura-ace $115

It is a very cheap option as well as being a little lighter.

crewman said:

If I was using a Shimano cassette and Shimano rear derailure than yes I could see the problem. I am using a matched set of shifters and cassette all being campy. There is no difference in shifting distance. The only difference is the derailure. It is indexed by the shifters is it not?.

.

The shimano and campy RD have A DIFFERENT THROW RATIO. They are NOT intercompatible. I'd get a veloce or centaur RD,and call it good.

crewman said:

If I was using a Shimano cassette and Shimano rear derailure than yes I could see the problem. I am using a matched set of shifters and cassette all being campy. There is no difference in shifting distance. The only difference is the derailure. It is indexed by the shifters is it not?.

As for It's just a spare bike". Maybe I should have left that out and said I was building a new bike. Checking an online seller from Canada who deals in U.S. dollars as well labicicletta.comtlsstore.cgiOpen ↗

You can see the prices as follows
2004 Centaur $99
2004 Chorus $179
2004 Record $239
2004 Dura-ace $115

It is a very cheap option as well as being a little lighter.

I couldn't give a fart about a few grams here or there. You are putting together a spare bike. Read what I said in my last reply again (and that of Bourdreux's) The design is different so it moves in a different arc. It requires a different amount of cable pull to move a set distance on that arc.