I have a great idea, that isn't working out so far. Just tig together a small Surly frame, say 42 inches long, or whatever it needs to be. I think I have cad for the basic Surly LHT somewhere, and just squash that flat, with obvious revisions for stearing and parts fitting. Then make that frame, instal couplers. Bad part is I don't think I can get the S&S couplers. The good part is one could just keep making short LHTs, until one got it right, for a really minimal cost in chromo. This only works for the portable tourer thing, it would be a disaster for a comuter folder. Another way to describe the frame I am contemplating is to make a Bike Friday frame that is standard diamon/triangles. There are some cheap ways to couple it, if it comes to that. I suppose what I want isn't really a folder, but a packable tourer. Cr$p wrong forum!
One of my arrangements involves the lower stays be cable, for lightness and packability, anyone see something quite that stupid yet?