Another version of getting "hot" in order to get cool. Beautiful construction by David Leinonen from Cokato, MN. The engine on the left appears to be a Parcel and Weed, but I'm not certain. David is a first time exhibitor at GEARS and had a really nice display. There is what appears to be a nice little Stirling engine in the center of the display. Thanks for coming all the way out here to display your engines David.