AlphaType Dual Cylinder Dual Piston Stirling Engine Model M20T Overview This finishedversion AlphaType Stirling engine is a compact, readytorun demonstration and hobby unit that converts heat into smooth mechanical motion. Built from stainless steel, brass, aluminium alloy, and bamboo, the M20T combines durable materials with precision parts to deliver reliable, lowvibration operation. Key benefits Clear demonstration of the Stirling cycle: Dualcylinder, dualpiston design creates distinct hot and cold zones and improves heat transfer for steady motion and visible performance. Ready to operate: Finished version ships complete with an alcohol lamp and instructions so you can start experiments or demonstrations without assembly. Smooth, quiet operation: Dualpiston configuration and careful balancing reduce vibration for stable rotation and better observation. Robust construction: grade metals and multiple bearings provide long service life and consistent behavior under regular use. Compact and portable: Small footprint and lightweight body make it simple to move between demonstrations, classrooms, and workbenches. Important specifications Model: M20T Style: Type6 Form: Finished version Materials: Stainless steel, brass, aluminium alloy, bamboo Inner diameter of heating tube: 20 mm Piston diameter: 20 mm Piston stroke: 20 mm Flywheel diameter: 78 mm Pulley diameter: 20 mm Total number of bearings: 30 Start mode: Manual start Product weight: 2.2 kg Package weight: 2.5 kg Product dimensions: 190 x 138 x 200 mm Package dimensions: 230 x 130 x 160 mm Packing: Box Recommended age: 16 and up Package contents Stirling Engine x1 Alcohol Lamp x1 Instructions x1 Practical uses Educational demonstrations: Show the Stirling cycle, heat transfer, and basic thermodynamic principles in classrooms or training sessions. Hobby engineering and testing: Use the unit for handson experimentation, tuning, and learning about smallscale heat engines and mechanical linkages. Desk or display piece: Operate as a quiet, kinetic demonstration in a maker space or office to illustrate engineering concepts and craftsmanship. Operation notes This model uses a manual start and an external alcohol lamp as the heat source. Allow the engine to reach a stable temperature difference between the hot and cold zones for consistent motion. The compact pulley and flywheel sizes are suitable for light mechanical loads or coupling to small generators for lowpower experiments. The M20T offers a practical, wellbuilt platform for education, hobby projects, and display, combining a proven dualcylinder layout with a finished, easytouse package.