Thread necromancy...

I have a Bianchi Pista that I'm considering using with a Cycleops Fluid2 trainer. I've got the stock 48-16 gearing on it at the moment. Reading around some threads concerning fixies and trainers, it believe I'm going to have my work cut out trying to turn that 48-16 over on this trainer. Anyone using a 18t cog with some success? I want to get a decent spin going without too much mashing.