Originally Posted by
cudak888
That so? Thought most of the ones on that page were operated similar to the Dura-Ace AX's and the Weinmann's, with a fixed cam pivoting the arms against each other, rather then the cable pulling directly on the arm itself.
-Kurt
It is a cam follower action on the Deltas and that makes them more akin to the rollercam designs than a straight arm/cable action pivot. I'll argue though, that a rollercam is also a centerpull and that the basic dsign is a _very old one.
http://www.blackbirdsf.org/brake_obs...oad/unk_uk.jpg
http://www.blackbirdsf.org/brake_obs...oad/jeay.2.jpg
Danny