Highpath Engineering has aleady done all the work. Handy table here: http://www.highpath.net/highpath/cycles/info/rear.html
@MADARC started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Highpath Engineering has aleady done all the work. Handy table here:
http://www.highpath.net/highpath/cycles/info/rear.html