Refined title: Sunnytech Low Temperature Stirling Engine Twin Flywheels Education Toy

Features:

1. Model: LT001
2. Color: Silver plate and Gold flywheel
3. Speed up to 180-200 RPM
4. Start temperature difference: about 20°C Celsius/68°F Fahrenheit
5. Material: carbon steel, nickel-plated carbon steel, stainless steel, glass, bronze, PVC foam and plastics
6. Size: 101014cm/3.94 3.94 5.51 in
7. Weight: 250g/0.55Ib
8. Packing list: 1 stirling engine, 1 very detailed user manual

Features:

1. Model: M14-06-S
2. Speed: 1300 to 1700 RPM
3. Weight: 460g / 1.02Ib
4. Size: L * W * H (200X100X90) mm / 8.0 in 3.93 in 3.74in
5. Technical parameters: flywheel diameter 54mm; driving wheel 24mm; power cylinder inner diameter 14mm; piston path 16.0mm; cylinder inner diameter 19.0mm

The stirling engine is produced with high-quality material and elegant workcraft. This stirling engine adopts mirror surface stainless steel for the base, glass cylinder liner, and zinc alloy flywheel. All the parts have undergone surface treatment to avoid rusting. It is oil-free.

Pouring a cup of hot coffee and placing the stirling engine on the cup will make it run magically. When it slows down, the coffee temperature is suitable for drinking. Enjoy the physical powertrain mechanism display and coffee. It can also work on top of an ice cube. Some individuals put the stirling engine on a cup of hot water and place small ice cubes on the stirling's upper plate. This creates a much larger temperature difference than normal, causing it to run even faster and more chaotically. Just enjoy the toy.

The board is made of Russian pine, using fine grinding manufacturing; the power cylinder and piston of the engine are made by fine milled SUJ2 alloy steel; the rod to the displacer piston employs fine milled bearing steel. This engine also employs a big quartz glass tube as a hot cylinder to reduce the risk of burst while burning.

Fill the alcohol burner with your 95% alcohol (recommended fuel) and light it. Let the light burn the round-ended cylinder for about 20 seconds, then gently push the wheel, and it will run like a charm. It can run for 8+ hours continuously without any breakage, as tested by one customer.

It's amusing to see people's looks and reactions when they interact with this Stirling engine. Put it on a cup filled with hot water, give the flywheel a gentle push, and watch it work like a charm. All of your guests will want to know what happened, making it a successful ice-breaker. What a marvelous toy!

product information: