I have never run one, but have spent many hours welding on them. The Midwest Old Threshers Reunion is about to get going soon. I love going up and watching them run the big steamers on the saws and running the belts to the Dynomometers.. They get those big engines ROCKING and throw sawdust into the chambers when it gets dark.. The sparks FLY and it adds a whole new dimension to the chest shaking thump those engines pack when running hard.