This morning, I took the '82 Superior out for a spin - the one bike in my fleet equipped with CLB's "CLB-2" centerpull brake calipers. They're extremely powerful, but the original, NOS pads were dry and noisy.
Perhaps too dry. During my ride, I hit the brakes excessively hard (mainly as I caught sight of the Mercedes that took out me and my Guerciotti EL 3 years ago), and found that I had sheared a quarter inch of pad in one sitting.
That wouldn't usually worry me, except for one thing - the CLB brake arms pivot on a 45 degree post, causing the pads to move upwards the more the arms flex inwards. I had angled the front of the pads based on their position during application, but I found this when I had come to a stop:
So be it. I shoved a set of Scott-Mathauser pads in place of the originals, and I thought that was the end of it.
Get a load of the brake bolt; it has bent about 10 degrees at the front, and undoubtedly contributed to the tire damage. Luckily, the original bolts are simply zinc-plated square-neck bolts, and I can substitute them with any higher-grade, round-end, square-neck bolts from ACE Hardware. Regardless, the originals obviously can't take hard braking stress.
I'm just glad I caught it in time. Thought I'd spread the word, even though these brakes aren't a frequent sighting.