And here I was thinking you would be calling me to figure out how to put a single cog on a freehub! This looks a lot like a flip flop hub build. I went back to the co-op today because when there getting your cranks, a few new Panaracer 1X27 tires that were donated. So I picked those up for a future build using some Weinmann LPS18 rims. My thinking is that the wheel change will make huge differences in riding quality. And the future build of a Mixte town bike is a possibility later his winter. Smiles, MH