[beerobber]

That sounds robust. So the VersaHubs attach to the AndyMark hub assemblies for 8" pneumatic tires? I would think it simplest to use the 12-tooth sprockets with hubs, double for center wheel and single for the others with spacers to align everything, but there's probably a reason to use plate sprockets instead. I would love to see another photo if you do have a chance, it is very helpful to me as we try to sort through all our options.