Join Date: Sep 2008
Location: Loveland, CO
Bikes: Two LOOK 585s, one KG461
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Actually, it's even more simple. A Campy 10 shifter has an average cable pull of 2.83mm by my measurements. I have table that someone made, claiming that the average cable pull for a Shimano 8 shifter is 2.8mm. That would mean that the normal cable routing with a 10 speed Campy shifter should operate an 8 speed Shimano drivetrain.
In reality, none of the cable pulls are 2.8mm. Campy shifters pull 2.5mm five times, 3mm twice and 3.5mm twice.
Campy 9 shifters are made in two versions, the older has an average pull of 3.2mm and the newer one has a pull of 3.0mm. The newer version was not made long, since it's production started after 10 speed came out in 2000. Campy made a change to the RD actuation ratio in 2001, so 9 and 10 were the same (IIRC). The newer RDs do not have a B screw in the normal location, it's hidden under the main pivot.