I am going to revive this old thread, as I now have a clearer idea of the direction that I would like to move in. I have found out that the double acting wobbler (my second engine) with the reduction pulley and o-ring drive, and also the beam engine will power the Slinky Machine with no problem. For the twin cylinder horizontal engine that I just added the governor to, I want to build something on which the load varies, but the load variation has to have longer periods of stability between high load and low load modes, and must run on its own without my intervention.--For example, I don't want it running a saw, where I would have to feed something into the saw to change the load.--Likewise, with a waterpump, there just isn't enough time between strokes of a pump to let the governor work the way I want to see it work. I am thinking of a baseball elevator, consisting of two #25 sprockets arranged vertically, one above the other, about 24" apart connected by a chain which has a "dog" attached to one link.. The sprockets would revolve slowly, and the "dog" would lift a softball up the 24" thru a clear plastic tube with a slot in one side to allow the "dog" to stick thru into the tube ,and the walls of the tube keep the ball from falling off the "dog". (This would be the "load" side of things). When the softball reached the top of the elevator tube, it would tip off, and follow a series of chutes or tracks back down to the lower elevation (this would be the "no load" stage), then it would end up at a loading position at the bottom of the tube and be picked up again to repeat the cycle. The ball would descend quite rapidly, but since the chain and "dog" move at a constant speed, the load/no load cycle time should remain the same all the time.---Any comments???