Between fitness, racing, and gym training (and lack thereof), my weight fluctuates between 235 and 250 and I race at the track as well as ride on the street. Most bikes will bear our weight no problem. I've ridden and raced steel, aluminum, and carbon fiber. You will probably experience performance issues with the entry level steel bikes as you are likely strong enough to flex the heck out of them on sprints and climbs.

Track Racing has always featured big guys. In this photo, Marty Nothstein (far left) as well as the two guys on the right are well over 200#:


I'm sure the Leader would work. Also consider:

-Fuji Track Comp or Pro
- Felt TK1 or 2
- Bianchi Pista Concept
- Trek T1
- Planet X (carbon fiber)

Just about any quality bike will do. I've ridden, and seen other big guys ride, just about everything.

Also, carbon forks are fine.

For track racing/training pointers, ask in the Track forum: http://www.bikeforums.net/forumdispl...-Track-Cycling