There are pics of the Dura Ace AX calipers on a Vista Aero at First Flight's website:
http://www.firstflightbikes.com/
Aldo Ross
(returned my AX brakes after one race)
Monroe, Ohio
I checked out the Shimano 600 Centerpulls and the Dura Ace that were posted today, on the list. They seem plain and not the ones I have been dreaming about for years. The ones that stand out from all the Mafac and Weinmans that we all have known is this special one that was made for only a brief period, and only appeared on the best bikes, during the 80's.
These brakes must have been some kind of centerpull, but the center triangular section had a cover. This cover enclosed the mechanism so that you couldn't tell if the brakes were being activated by a central cable or maybe some kind of centerpull cam arrangement. These things were a real rarity, and you could go weeks in the 80's without spotting another set, usually on a super bike of aero pretensions. I kind of remember that they were some version of Shimano, as Shimano was doing very neat things in these years, (reference those platform pedals that had adjustable cleat length and lowered contact plates, plus they only fit into the special, Shimano crank arms.
As an aside, if we are discussing classic centerpulls, nothing has quite the meaty authoritative look of Weinmans. The Mafac Racers were elegant, somewhat in the spirit of these Shimano 600's, but the Weinmans looked like they really meant business. Sorry Dale, for a strictly artistic comment.
Any ideas about those rare phantom brakes of the 80's though?
Garth Libre in Surfside Fl.