The Stuart S50 is an elegant model of a typical mill engine, as used in the North of Engl&, to power small factories throughout the 19th & Early 20th Centuries. The Stuart S50 is an ideal "first time" model engineering project. It is supplied as a full set of castings together with all the materials, fixings & drawings needed to finish the model. Please remember our sets of castings require the use of a lathe & milling machine to turn them into a working steam engine. Engine Description: Stuart S50 Set of Unmachined Castings, Materials, Fixings & Drawings. Specifications: Length: 8 1/2 Inches. Flywheel: 3 Inches. Bore: 5/8 Inch. Stroke: 1 1/4 Inches. Contents: Cast Iron: Soleplate, cylinder, valve chest & cover, front & rear cylinder covers, flywheel. Brass: Slide valve, piston, eccentric strap, valve operating block, glands, crosshead. Steel: Crankshaft, crankwebb, connecting rod, eccentric sheave, eccentric rod, distance pieces, slide bars, crankpin, piston & valve rods. Sundries: Detailed drawings, gaskets, fibre washer, cylinder lagging, gland packing, fixings pack. Manufacturer: Stuart Models Model / Part No: S50 Unmachined Set of Castings (34-50-71315)