Stirling Engine, Alpha Type, Working Model, Brass Components, Stainless Steel Heater, Dual Cylinder, Precision Flywheel, STEM Education, Collectible Model, Industrial Heritage, 1:6 Scale, Workshop Display, Railway Hobbyist, DIY Engineering, British Engineering |
Experience the elegance of classical thermodynamic engineering with the M20-W-01 Alpha-Type Stirling Engine — a fully functional desktop machine crafted for collectors, model engineers, and STEM educators. Inspired by mechanical displays seen in British industrial museums, it brings real heat-to-motion conversion into your study, workshop, or classroom.
● True Alpha-Type Mechanics with Independent Hot & Cold Cylinders
The M20-W-01 uses two structurally identical SUJ steel cylinders working in parallel — one heated to ~600°C, the other remaining around 50°C even after 20 minutes of running. This extreme 500°C+ temperature differential is the heart of its sustained power output and a defining feature of authentic Stirling performance.
● Dual Gear Transmission for High Stability
Instead of linking the pistons directly, both cylinders drive a dual-gear system with a 2:1 ratio. At a crankshaft speed of 1000 RPM, the 78 mm / 155 g flywheel spins at 2000 RPM, storing rotational inertia similar to a single-cylinder diesel engine — ensuring smooth, low-vibration, quiet operation ideal for display.
● Precision Materials for Long Service Life
Cylinder sleeves and pistons are machined from GCr15 (SUJ steel), hardened to 58–62 HRC, and ground to ±0.005 mm for airtight reciprocating motion. Brass connecting rods, brass gears, 6061-T6 aluminium structural components, and a perfectly balanced flywheel reflect the expectations of serious British model engineers.
● Enhanced Compression Ratio & Heat Efficiency Design
Both sides use 20 mm power cylinders and 20 mm stainless steel heating tubes, but the heating side deliberately uses a longer tube — optimising compression ratio and providing a stronger pressure wave during each cycle. The engine runs on 14 precision bearings, ensuring smooth rotation and quiet mechanical rhythm.
● Collector-Grade Presentation
Dual cylinders, visible gearing, brass elements, and a compact 200 mm-wide footprint make the M20-W-01 an exceptional display piece — fitting naturally beside Hornby layouts, workshop tools, and other industrial heritage collectibles.
Place it in your office, use it to demonstrate thermodynamic cycles to students, or gift it to a fellow enthusiast — a working tribute to classical engineering.
Free UK tracked delivery (2–4 days)
30-day return with original packaging
Appreciated by UK model engineers and STEM instructors for its mechanical purity.
Model: M20-W-01
Dimensions: 200 × 138 × 125 mm
Net Weight: 1.8 kg
Packaged Weight: 2.0 kg
| Component | Material / Specification |
|---|---|
| Power Cylinders | SUJ Steel (GCr15), Ø20 mm |
| Heating Tubes | Stainless Steel, Ø20 mm (longer on hot side) |
| Flywheel | Ø78 mm, 155 g, Aluminium 6061 |
| Cylinder Liners | GCr15 Steel, 2.5 mm wall |
| Connecting Rods | Brass |
| Gears | Brass |
| Support Frame | 6061 Aluminium |
| Bearings | 14 precision bearings |
| Base / Structure | Aluminium Alloy + Brass Components |
Order now and add a piece of authentic British engineering to your collection.
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