I took my Raleigh Gran Sport out for a spin in today's heat. Haven't had as many opportunities this summer as I would have liked. So on the way back home I reached for the rear brake lever from the forward part of the bar where I could apply more force than from the hood, gave it a squeeze, and felt a pop. And no brake of course. Fortunately this wasn't far from home and wasn't approaching a dangarous intersection.
This cable has been on the bike for a while but isn't the original '73. I've heard of broken cables, probably from rust inside the housing. When I got home I found this:
I've got some old, unused (sort of my own NOS) cables. But you know what, I think I'll just pick up two new ones.