Originally Posted by Blue Order
I don't know whether or not this can be done, but I would check to see if a mt. bike frame can be converted to a 29er. That's all a 29er is, really-- a mountain bike frame with 700c wheels. Well, that's not exactly true, because the purpose-built 29ers have slightly different geometries, but it's true enough. So I would look into either buying a purpose-built 29er, or modifying a mt. bike frame. I suspect that "all you have to do" is adjust the brakes location. Somebody else will know more about it than I do... Maybe on the Mt. bike forum?
Nope, won't work. Even if you went to disc brakes, the stays are too short, along with the fork legs, on mtb's designed for 26" wheels to accept 29ers............And you wouldn't have anywhere near the clearance between the stays, fork legs, etc. on a road bike to accept a true 29" mountain bike tire. Sorry-