Model: AlphaType TwinCylinder TwinPiston Stirling Engine Model Item Number: M20W01 Engine Form: Assembled Version Age Recommendation: 16 and up Overview This assembled Alphatype twincylinder twinpiston Stirling engine model converts heat into smooth mechanical motion using a proven dualpiston configuration. Built from stainless steel, brass, and aluminum alloy, it is engineered for reliable demonstration, hobby use, and lowpower mechanical projects. Key benefits Efficient heattomotion conversion: The twincylinder, twinpiston Alpha configuration improves heat transfer and increases usable power output compared to singlepiston designs. Durable construction: Stainless steel, brass, and aluminum alloy components provide precision fit and corrosion resistance for long service life. Quiet and smooth operation: Fourteen bearings and a balanced dualpiston layout reduce vibration and run smoothly at steady speeds. Ready to run: Supplied as an assembled version with a manual start and an included alcohol lamp, so it can be operated immediately without assembly. Compact and portable: Small footprint and modest weight make it easy to place on a workbench or display shelf. Specifications Materials: Stainless steel, brass, aluminum alloy Heating replacement cylinder inner diameter: 20 mm Power piston diameter: 20 mm Piston stroke: 20 mm Flywheel diameter: 78 mm Pulley diameter: 20 mm Total bearings: 14 Start method: Manual start Product weight: 1816 g Product dimensions: 20 x 13.8 x 12.5 cm Package dimensions: 23 x 13 x 16 cm Package weight: 2016 g Packing: Box Package contents Stirling engine x 1 Alcohol lamp x 1 Instructions x 1 Practical applications Educational demonstrations: Show principles of heat engines, thermodynamics, and mechanical linkage in classroom or home study settings. Hobbyist projects and displays: Use as a functional model on a desk or shelf for collectors and mechanical model enthusiasts. Small experimental setups: Test heat source variations, pulleydriven accessories, or simple mechanical loads for lowpower experiments. Use notes Designed for manual start and lowpower operation. Operate on a stable, level surface and follow the included instructions for safe use of the alcohol lamp. Recommended for ages 16 and up due to small moving parts and open flame during operation. This assembled Alphatype twincylinder twinpiston Stirling engine model M20W01 combines robust materials, balanced dualpiston performance, and a compact footprint for practical demonstrations and hobby use.