@jbaggs@moira I couldn't really tell from the photo, I'm assuming they welded an extra rim to the side of the actual rim and used that as the belt pulley, but how they fit that all in the rear dropout I can't imagine. I like their idler/clutch setup though.
@moira@nickzoic The picture made it look like it went under the tire. So the spokes go into the "normal rim" and there is a secondary on the outside (welded, brazed, or whatever) for the belt?