@cyclingfool 99166 wrote:
You may have already checked with him, but Sheldon always has some info. The article is outdated, but then again, so are your cranks.
Good luck.
http://sheldonbrown.com/tooltips/cotterless.html
I thought I checked Sheldon Brown but somehow I overlooked that article. The key thing is that it sounds like there isn’t as much variation in cranks / extractors as I thought. The last time I needed a crank extractor, it was a Stronglight crank, and since Stronglight needs a specific tool, I got the idea that every crank needs a specific tool. But if that’s not the case, great.