"Tom Sherman" wrote: (clip) The greatest challenge may be the seat, as many
manufacturers spend as much building the seat as they do for the frame, and
homebuilt seat are often less than satisfactory.(clip)
^^^^^^^^^^^^^^^^
I ran across a guy a while back with a home-built recumbent. It was
obviously home-built--almost on the crude side, but appeared to be very
rideable. His seat was an injection molded plastic kitchen chair--the kind
that is form-fitting around the butt and back. It appeared to be quite
comfortable, and it was certainly very light.