RadBrad and KoolKat, of Atomic Zombie, wrote this wonderful guide to the fine art of bicycle deconstruction. You can learn a lot about a machine by stripping it down to its constituent parts. And in this case, you end up with a lot of parts that you can combine with other parts to fab your own Frankenbike. Here’s an excerpt from the piece, a bike breakdown anatomy. The entire piece can be found on Make: Projects. – Gareth