I think I have a cheapo rear wheel that could at least get you going. Its a 36 spoke no-name hub with an Alex RP-15F rim. The rim is single wall, and like I said its a really cheap wheel. I think its in a pile of my stuff thats still at my old house, unless its been gotten rid of (I know the occupants, they let me store some stuff there). Anyway, if I can find it, its free.