Originally Posted by bengreen79

Here you go:

http://www.cicle.org/wordpress/2007/...-conversion-2/

Originally Posted by sillygolem

If that's a 10 speed, you can swap out the current freewheel with an ISO-tread single speed freewheel. The wheel isn't dished for gearing, so the chainline should be almost perfect to run on the inner chainring. The rest of the work is just Definitely nowhere near $250. You can use the current derailleur as a chain tensioner, or get a purpose-built one cheap.