The Stuart Beam is a relatively simple engine to construct. The use of Watts parallel motion makes this engine fascinating to watch, particularly at slow speeds. As with all Stuart Models finished engines it is supplied ready to run complete with a hand numbered certificate of authentication. Engine Description: Stuart Beam Finished Engine Specifications: Length: 13 Inches. Flywheel Diameter: 7 Inches. Bore: 1 Inch Diameter. Stroke: 2 Inches. Contents: Cast Iron: Bedplate, column, beam, pedestal, pulley, crank, cylinder, valve chest & cover, top & bottom cylinder covers, piston, flywheel. Brass: Slide valve, eccentric strap, valve opperating block, glands, conrod bush, crankshaft bearings, beam bearings, entablature bearings, valve gear bearings. Steel: Crankshaft, connecting rod, eccentric sheave, eccentric rod, clevis, crankpin, beam shaft, entablatures, piston & valve rods, valve gear & parallel motion. Sundries: Detailed drawings, gaskets, viton "O" ring, gland packing, fixing pack. Manufacturer: Stuart Models Model / Part No: Beam Ready to Run Models (34-50-71392)