Hey Kathy! I ride a Specialized S Works. Loved it SO MUCH, I bought another one as my "beater" 'cross bike . I ride a 54 on the road, and my 'cross bikes are the same size. They fit perfectly!

The geometry will be different from your TT and road bikes. Slightly more upright position, and a higher bottom bracket. I set my bars up so that I sit a little higher - this gives me more control in the technical sections of a course.

My race bike is outfitted with lots of "bling". Mavic Ksyrium wheel set, Ultegra grouppo, very light ALUMINUM bars (broke my carbon bars earlier this season and it HURT). I run a single chain ring up front for racing (39 or 40), and a 12-27 in the back. Around here, that works fine for me. I have been able to ride quite a few of the hills.

I would stay away from using your Zipps as race wheels for the 'cross bike.

Let me know what you end up with! And does this mean that NEBC has another 'cross racer in our midst???

SheFly