The GAGE HM1 steam engine kit is a double-acting, single cylinder, non-reversing steam engine. The HM1 is constructed from aluminum, brass and steel. The kit contains a detailed instruction manual, all parts fully machined and all necessary hardware, including brass hex-head bolts for all visible hardware. A "spin-tight" wrench is also included to install the brass hex-head screws.
Bore = .344" Stroke = .500" Weight = 3-3/4 ounces 5 to 35 psi steam or air operating pressure Shaft diameter = .125"