Haven't heard abour ball-pivot Racers, but maybe they were on the Mafac GT brakeset in the late 1970's? David Feldman
> John Everett wrote:
> >
>
> > I'm inferring from the previous posts that there are really three
> > variants of the "Dural Forge" brakes. The early ones ('50s & early
> > '60s) have ball bearing pivots, the next series (mid '60s) have the
> > red plastic washers and bronze (not brass, I believe) bushings, and
> > the later ones (late '60s) had red plastic bushings and washers.
>
>
> Early ones with holes drilled at the pivots to oil bushings, and
> slightly newer early ones without oil holes, but no plastic either.
>
> Has anyone on the list actually seen MAFAC Dural Forge with ball
> bearings? Four ball bearings would have _really_ increased the
> manufacturing price over a plane bronze bushing! Maybe an "urban
> legend?"
>
> Chuck Schmidt
> South Pasadena, Southern California