Here is a Calfee Luna Fixie. Unfortunately it has cross geometry and a cross fork. So the wheelbase is long and the angles are slack. It is really built for the street, but it does ok on the track. It is really, really light and strong, but it doesn't handle properly. I'll put a track fork on it next spring, so that will help some. I'd love to have Craig build me a proper track bike (I got this used on ebay) but he wants 3 grand...probably in two years I'll have him do that. Check www.calfeedesign.com on sponsored riders page for pics of a couple purpose built track machines that he has done...he'll even make you a Bamboo one if you like!