Ok, so this got my gears turning. On the Pro Mini version of those forks, (And Pax's upgrade kit) the caliper in use is a Nissen two pot clone. Honda NSR50s use the cloned Nissen two pot on their front brake, but it's for the other side...
So, I've got a matching set of calipers, left and right. All I need is a second dropout with caliper mounts (they're centered on the dropout, so no custom work there) and a reverse caliper bracket. The bracket should be easy enough to have duplicated, it's just a piece of steel with two posts, and two threaded holes.
This leaves me the issue of where to mount a second rotor. That I haven't quite sorted. My first thought was to use a rear SDG style hub, and lace a 14" wheel to it. The bolt pattern on the sprocket is slightly smaller than that of the front rotor, but there is plenty of meat on the rotor to drill new bolt holes, so an easy problem. Not so easy is the minor detail that the hub is much wider than a front hub. So that's out.
Option two would be to weld up mounting lugs on my existing front hub, but I dunno how well that'd work on a cast hub?
Oh well, it's an amusing idea, I'd be more apt to try this with my NSR50 front end as that's where I need the extra brake capacity. Fortunately there I can just get an adapter bracket to mount a 4 pot Brembo. Actually, if you can mount a Brembo on my front end, you should be able to whip out a bracket to do the same on these Zochs....
