The cutting score to pick up Sgt in my mos is high, I have been in for 5 years, being a Cpl for the last 2. To go warrent officer you need a minimum of 8 years and must be a SSgt. If I'm still a Sgt at 10 years ill be pushed out of the corps. Not worried yet haha. Lesterofpuppets, I have considered that, I need to get a front wheel. I do have a freewheel on the rear hub, I'll need the tools. What cog do you suggest? I hear 18 thrown around a lot. Should I get a 1/8 chain also? Thanks again everyone