learned something new today, as I was riding a downhill section, approaching a switchback, I went to brake, and horrible noise and braking was almost non-exisitant, missed the switchback and went off the trail before I could bring it to a stop, with a little flintstone asisit.
Looked at my rear rotor and it was completely destoryed, seperated at the cooling holes into two pieces, bent all up and jammed into my spokes.
I guess the 1900+ miles had worn the rotor so thin, that when I applied the brakes, hard, that the rotor was stopped cold and was thin enought to crumple under the load.
with all the various discussions around disk brakes, I had no heard of this, but it seems logical.
To make matters worse, I had t remove the rear disk assembly so that the rear wheel would turn, and I hung it on my camelback, stapped down thu the part of the rotor that was wedged into the brake. The rotor was really sharp, ( I sliced both index fingers trying to get the thing off my bike), that with the bouncing on the ride down, it cut the strap and is lost forever.
So, now I need a new six inch rotor and rear disk brake assembly.
BTW, Hayes Mech on the bike since new in 03, with over 1900, ( closing in on 2k), miles on the bike.