Originally Posted by
steelbikeguy
I thought it was pretty well established that this was the fate for that model of Campy pulley. Mine have all been preemptively replaced with Bullseye pulleys (but that's just because I've always preferred Bullseye to pulleys with bushings). A few of those Campy pulleys are cracked too, but I don't recall if that happened before or after they were put in the parts box.
As long as we are sharing sad stories, I recently had one of my Bullseye pulleys freeze up on me! It hadn't seen that many miles, but somehow the grease had managed to wander off and be replaced by a bit of rust.
I only had one spare Bullseye pulley, so I started looking around for a modern replacement. The red pulleys at Velo Orange look like decent replacements... although I'm not sure how I feel about the holes in each tooth. I ended up buying a set of Tacx pulleys, model T4000. With the assorted plastic inserts, they will fit fine on the 5mm and 6mm bolts of my vintage derailleurs. With the inserts, the pulleys are 9mm wide. The Campy pulleys are 10.9mm wide, and the SunTour pulleys are 10.3mm wide, so I may have to use some of the Bullseye washers to shim the Tacx pulleys. (the Bullseye washers are 0.9mm thick)
Are there other pulleys (that are in production) that are a better fit to our beloved vintage derailleurs??
Steve in Peoria
You can replace the bearings in Bulleye pulleys. I did this in one of my sets. Just read the bearing # off the plastic shield on it. I seem to recall a 4001 or something like that. I would go for a good bearing like an SKF or something if doing it over. I just used a pair of sockets in a vise to press the old one out and new one in.