except for the 10" flywheels, the prototype 1/4 Kansas City Lightning Engine was all machined from bar stock in the 1990's.
it has 2 opposing pistons in the same bore with the valves underneath and the igniter in the side.
it was scaled down from the full size 10 hp engine sitting under a Pine tree by an elderly bachelor's house.
i made many visits to visit Morris to measure and photograph. after i finished this one, I went on to make lost wax molds for all of the parts.
Morris loved to talk and it was always a full afternoon. i kept asking if i could take the big one home and get it running. His answer was "but then you won't come to visit me!"
i helped his Niece take care of him and after he died, i was able to get the full size engine from his estate.
the KC literature advertised that they sold a tractor version so a couple of years ago,
i built a 1/2 size as a tractor. video at