I had mentioned in one of the rehab-my-Peugeot threads having a Peugeot frame with rear brake bridge that I've never seen before. The brake hole is vertical, not horizontal. No sign of cantilever studs, and I'm assuming those are rack braze-ons above the bridge. Might this bike had a hub brake of some sort? Any idea of what's the best way to put a rear brake on this thing?
Like I said before, it takes a special adapter. I've seen one, but I don't know where you'd be able to find one. I already had a search for vintage brake parts set up on eBay and I just ran it with no luck. I'd try to fabricate something, but I'm equpped for that sort of thing. I definitely wouldn't redrill that brake bridge. Good luck!
Well, here are the results of my modification. Didn't drill the bridge, Dirtdrop. Instead, I chopped up a rear reflector bracket and drilled a hole for the brake bolt. Not particularly elegant, but for what'll be a cheapo 5-speed city bike, I think it should work just fine.
Here are a few shots of the bike as it currently stands. My guess is that it's a repainted, re-stickered UE-8. The white area on the seat tube looks to be what's left of the original paint. The wheelset is from a Raleigh Sprite, and I was able to get a sealed BB in there that I pulled from a junked MTB.