Nimbus drift trike freewheel hub, 36H, non-disk and nimbus Venture2 125mm square taper cranks. I’ve only physically applied weight to the freewheel unicycle twice for less than a minute each time. Feeewheeling looks like so much fun, and if I wasn’t about to kickstart my nursing career, I’d be more motivated to try. Alas, I don’t have time to learn new things, so this basically new freewheel set is yours for the taking (for $130 plus shipping OBO) 
PM me if you’d like pictures. It’s currently set up around a 24" large Marge rim, but I’ll be taking the wheel apart whenever I get a buyer.