Brian:
I have a NOS (really!) pair of Altenbergers; I think this design may have originated at GB (Hilary?), and was also made/sold as the Weinmann symmetric. there's a small cast-in peg on one of the arms, which rides in a slot on the other arm, so that the arms move symmetrically and are self-centering.. I hope this makes sense........
Chris Beyer Bloomfield, NJ
brian blum wrote:
> I have a Synchron brake and it looks like Shimano modified this design for
> there dual pivot brakes. It was a great idea that failed until the great
> Shimano design/marketing machine took it on. As a kid my friend had a 1972
> Columbia(a true fallen classic name) with sidepull brakes by either Dia
> compe or Altenberger which had a red anodized lever between the arms. Does
> anyone remember this design and how it worked?