while I can't afford to replace both wheels and the cassette now, I COULD replace the rear wheel and cassette (which would irk me, as I just put a $48 27-1 1/4 on the damn thing two days ago) at the beginning of the month. But that would mean I would have a 27" on the front and a 700 on the back. Is that nuts? It would only be for 4 to 6 weeks. Is that something I can safely do? Or would it set up some weird harmonic vibration that would send me unsuspectingly over the side of a bridge or something?
oh, and I'm using spd pedals. Someone asked about that.