Grant MacLean helpfully directed me here:
http://www.asahi-net.or.jp/
If you look toward the bottom, you can see that Dia Compe sold a kit for mounting the GC centrepulls onto brazed-on bosses. I suppose this means they also sold special springs for the purpose. (I wonder if a Mafac spring would work -- they do connect with the brake arm in the same way as Mafacs: via the brake shoe bolt.)
If anyone happens to have a lead on such bosses, please let me know. (I'd need the ones for the NGC450B brakes.) I'm also looking for GC straddle wires.
Thanks to all,
Adam Hammond Toronto, ON, Canada
On 16-Jan-08, at 12:26 AM, Bob Freitas wrote:
> I think the configuration of the spring on the Diacompe
> is the breaker. I have a Centurion which came with center pulls
> mounted directly to the frame.
> I bought a set of Gran Compe brakes thinking the would mount
> directly but the springs are not the same. So the bike now sports
> Mafac CPs which fit right on with their standard springs. My Herse
> has brased on brakes also but they are Universal 61 with what looks
> to be standard springs.
> I looked at rebending springs but that is a tough job (or
> maybe I am not strong enough)
>
> BOB FREITAS
> sunny then foggy in MILL VALLEY, CA USA