If a "contemporary equivalent" to the modern dual pivot sidepull calipers appeal, you could consider a set of the Weinmann Symmetric or the GB Sychron dual pivot sidepulls. I don't know what the name was of the Altenberger brakes. I believe were the first of this ilk. Anybody know the introduction dates and range of production years for these various iterations?
If these work for your build, you can demonstrate to the modern crowd that dual pivots are not a new concept. Many hold that they are good brakes. My recollection is that some tricycle riders liked them for instances where only a single brake would be fitted and that they were also popular with tandemists. If equipped with Koolstop Continental shoes rather than dried out rock hard pads, these will more than likely be able to send you over the bars if you grab too much front brake.
I'd think that it would be fun to build up a bike one of these days that includes as many of these forgotten innovations as possible (i.e. GB Syncrons, B-W freehub). Now, what to use for an indexed shifting system that would mate to a B-W freehub with 3 cogs?
Charlie Young
Honey Brook, PA
> I'm contemplating modifiying this Greg Diamond sport-tourer a little more
> toward tourer by swapping the current Superbe sidepulls for nice
centerpulls (if
> they exist) and at same time change from 27" to 700C (current Superbes
won't
> reach that far). Most of the vintage centerpulls don't do much
(aesthetically)
> for me except for Mafac 2000 and DiaComp DC 510. Are there other vintage
> ctr-pulls I should consider (such as the elusive Dura Ace or pricey
Deltas) or is
> there a contemporary equivalent to consider such as double-pivot sidepull?
>
> Jack Romans
> Sacramento, CA