My dear, trusty transportation bike - a 1974 Raleigh Sports - seems to be wearing out in the bottom bracket department. A little sound each pedal revolution has started to develop into a more full-fledged grinding over the past 10-20 miles. The bike fits me wonderfully, I don't want to part with it, and I'm willing to spend on tools.
I've searched the forums and Sheldon and have read the horror stories, but I haven't gotten a good sense of the typical difficulty of a complete cottered crank overhaul. I know that getting the cotters out can be tough, and I've heard stories about the difficulty of getting the cups out, but what is usual?
I would also appreciate input on how to proceed once I get to inspect the guts. If the spindles are torn up (which seems likely), it sounds like it would be hard to find/kludge a replacement. I'm willing to save up for a Phil Wood/three-piece crankset to go with the Raleigh threading, but it would be nice to be able to continue using the pretty original chrome chainring with the herons on it.
Many thanks in advance!