When Paul components set out to build this brake, nearly four years ago, they started with a clean slate. They tried many wacky ideas but eventually found their way back to the tried and true ball bearing in a ramp system. From there they concentrated on the details. They hardened the steel where the balls contact the ramps, used three hardened steel pins to locate the pad actuator, and instead of a plastic thrust washer they used a flat needle roller thrust bearing.
The caliper body took countless drawing revisions and probably 20 prototypes. The addition of “fangs” to the inner backing plate increased stiffness, and beefed up the outer caliper body where needed. The pad adjusters went through a similar process. The goal was to have easy adjustability but staying power. For that they designed detents into the circumference, located with spring ball plungers.Paul believes this is the best mechanical caliper ever made for a bicycle and we can agree. It’s available in Long Pull, Short Pull, and Campagnolo pull.