The result would be like that fat tire ratroded old Dahon somebody posted.
Sixty: Are you going to use a extracycle or make a longtail the DIY way? Would you start with a R20 (asking since the fold is a bit zig-zagy) or a folder with a more common type fold? I am aking to start my detatchable longtail but had to do the brakes on my car first.