Oh, in that case, 650c TT frame. I've been watching complete litespeeds, little titanium frames, go for five or six hundo on the 'bay. The tri-folk have virtually abandoned the size.

BB will be a lot lower than track geo, but it may be possible to squeeze in a 700c in the back end, of the end, raising the angles and BB shell. Track fork. Bam. Pursuit bike for your lady. Guaranteed, every night.

But hitting the track with CTS? Sketchy. There's going to be a lot of pulling on the wrist, and a lot of grip strength necessary.