Hello all. I'm a little confused about this concept. I've looked up 69ers, browsed the mtb forums and what not and I've gotten conflicting answers from different people. My understanding is that 26" wheels with balloon tires are the same diameter as a 700c wheel with a real skinny tire. Am I wrong or can I just pop a set of 700c's with skinny tires on a cantilever frame?. Is there anything else I need to do?. Thanks for your time