I just took one partially apart to see if I could mix and match a Superbe body to a long cage AR body. Well, it wouldn't be easy. But in the meantime, I got to see the guts of one beautiful derailleur! It uses a race of tiny balls between the cage and the body and an impressive spiral wound spring.
To bad I have no current need for a short arm derailleur. Those Superbes are truly sweet.
Ben

