i recently recieved one of those junk magna girls ten speed mountain bikes that isnt even savable to almost ride and i have another much newer one that is a 18 speed or something and i think im going to build something like this
http://www.flickr.com/photos/48848752@N03/5193593720/
http://www.flickr.com/photos/48848752@N03/5193593720/