Please take a look at my ongoing prototype project.
I plan on adding a Sturmey Archer drum on the front, stronger rims and spokes.
For those that know, since weight isnt an issue.... what are the strongest 20 inch rims for a bike? Steel? Aluminum? AND anybody have a good resource for heavy duty spokes? Electric bike spokes?
I was thinking of giving it a good shakedown this summer and possibly making a batch of frames if there is an interest.