Fixing 70's Schwinn seatstay braze

First, I'd like to thank everyone here for awesome advice as I've been [very] slowly building my first frame. The community that exists here lends credence to the craft that is involved in building a quality bike frame.

As I've been practicing, and putting my first (practice!) frame together, I've been waiting to fix this broken seat stay joint on a frame I'd picked up a few years back as a SS commuter. A friend needs a ride, so I'm going to finally get around to it.

Naively, I could just braze the thing back together, but I have doubts about the longevity of such a fix. I'm curious what you all would do (I think it is worth fixing), and if that involves a new seatstay cap. Here's what I'm talking about:

Attachment 46341

More photos are on my Flickr: Flickr: liveloveride's Photostream

it appears to me that they put the next size down bike's rear triangle on that frame.
On edit: good thing I looked at the pics again. I don't know if it's worth fixing now that I see the stay broke. I would replace the stay.
If you are going to do a cobbled together job you probably could sister a larger stay in next to that. There was a similar thread on here recently I think. It's going to look like crap unless you replace the stays.

Eric,
Thanks for the advice.
I had looked before, but looked harder since you mentioned seeing something and found a very similar fix. http://www.velocipedesalon.com/forum...irs-27184.html

I have no idea why that other seat stay failed, it had plenty of overlap. The overlap on your schwinn is too small, and it is likely to keep failing. Maybe you could get cut the stays off flush and add plugs. For example, these ugly Long Shen examples