I have an old Pinarello Stelvio from 1996 with Campa Athena
components. I am having great difficulty adjusting the back derailleur
properly. No matter how I adjust the derailleur, the top four gears of
the cassette will not ****ft correctly. If the chain is on the fourth
gear, it regularly touches the fifth gear, the same for each following
gear. If I adjust the wire tension so that the chain doesn't touch,
the tension is so loose that the ****ft from the eighth gear to the
seventh gear won't work and the ****ft from the first to the second
won't work either.
I have spent hours trying to get it working as it used to, but no
luck. The low and high of the derailleur is correctly adjusted. I have
replaced both cable housings and wires. The chain and cassette are not
old. I can't understand how the jumps of the derailleur are not
constant. It is as if the derailleur travels too far when moving
toward the upper gears.
The back wheel is not a Campa hub, but a Mavic 571 with a Campa
cassette. The combination of the Mavic hub and Campa derailleur has
always worked well in the past.
Any help or advice would be appreciated. If the ****fter or derailleur
need replacing is there a modern Campa that would still work with my 8
speed setup?