Ahoy ! The intent of my inquiry is both "keep 'em flying" and improvement tricks. And, I understand this could be a broad topic given the variety of On Topic rear ders. So, yes, I'm throwing the floor open and inviting all comments on all makes of rear ders. What's coming to mind is a lister's comment from a while ago that he mixes pulleys on the same der (Campag NR?) and achieves improved shifting. And, there are some really nice pulleys on the market for which it would be nice to know if they will work on On Topic rear ders. For my part, it pains my sense of stewardship to use up nice, vintage pulleys on rider bikes so, I'm always on the alert for alternatives. Also, I don't have the slightest idea of how pulley teeth quantity could affect shifting. Didn't Huret have a toothless pulley?
Chicago, Illinois; U.S.A.