Last night on my commute that which rolls had it's first major structural failure. Halfway home from work a the bottom-bracket started emitting a strange grinding noise. Then the left pedal started going floppy. I stopped thinking I'd thrown a pedal bearing or perhaps the crank was loose. So I tightened both the pedals and cotter pins as best I could and rolled on.
After about 50 meters, the left crank fell onto the street! Thank G-d I wasn't going very fast or standing on the pedals ... the good news is I have a spare from the Raleigh I bought earlier this summer. So today, I'll dip into Glenn's Complete Bicycle Manual and get my hands dirty %)