This note is actually for Karson, but anyone who is interested can respond.
I saw your comments on lumberjocks.com . How much leway do you have on your 4’ wagon wheels? My sets of original wood wagon wheels are 42” and 35” The larger is on an 70” wood and blacksmith made axle and beam with the tongue mortised through the middle. They can be seen at my site http://johnmaciver.tripod.com/id4.html . I work on old wooden boats, build canoe paddles, and many other wood projects. I would like to expand on this and get out of the work for others mode. My email is email@example.com