I have them, that is possibly it. I guess they make real nice stuff for that size of wheels, like discs, but there is the parts issue.

No way it is patented, and anyone could figure out how to make a similar thing, if it is. As a tig welder, I might try something similar. Rather than fold it, just some bolts to hold the rear triangle on. The only reason to fold it would be to get places, or storage, for me. Otherwise I would have it just like a regular bike.

I already wrote Urbane. I will write Surly. Either way, not likely to happen soon enough...