Biggest hit and miss engine I have ever seen

[Olorin67]

those are fun to see run, Some of the old farm equipment shows have them , I've seen some that needed a custom trailer to haul them to the show. For really big single cylinder engines, check out this the engine show in Rollag , MN. They have one that is supposedly the biggest single cylinder open crank engine in the world, built for the 1904 World's fair.