I've repeatedly toyed with the idea of using pipe fitting hardware as used in plumbing to make a bike that can be disassembled. Those parts are fairly cheap so one could pick up a pair of those and a beater bike for some real-life experimenting w/o breaking the budget. They'd be a lot less slick, and probably heavier than the real deal though.

If I ever get around to doing it, I'd probably get quite a kick out of the reaction from those who recognize the source of the parts...