Another thing I worked on last night was the Trek Elance 310. I wanted to save the 40 tooth chainring for another project so I pulled it off and replaced it with a 42 tooth. Well then..........when I bolt the rear wheel back in, the axle sits right on the edge/front of the dropout. Not enough room for another link. I have decided to convert to fixed gear now. I spun a 16 tooth cog on there. Now I just need to use a 1/8th chain. So we're going from a 40 X 18 SS to a 42 X 16 fixed. I'll let you know how that works out.