The tractor vacuum engine heat dissipation method is air-cooled, and the engine is cooled by natural cooling after the air contacts the surface of the heat sink .

The closed cylinder should be filled with a certain volume of water . When the liquid is heated for expansion and compressed by cold compression, it will generate power, so that the tractor can move.

Features:

• Novel Design: The Stirling engine is in the shape of a retro tractor, special and unique.
• High Craftsmanship: The whole engine are made of metal, which is sturdy and durable, not easy to wear, and looks more retro after coloring. Pure Handmade, exquisite.
• Educational Toy: Through hands-on operation, you can understand the stirling engine principle more intuitively by observing the whole engine running process, and deepen your interest in physics (this principle will be learned in the physics book of junior high school).
• Ideal Gift Option for Many Applications: With competitive price and nice looking, the engine has a wide range of application as, great gift for Kids' science project, Physical/mechanical learning, teacher’s Demo props on the class, birthday gift for friends, families, parents, kids, etc. Many of our customers come from school, colleague, etc.

Specifications:

• Item Name: Tractor Vacuum Engine
• Material: Metal
• Product Size: 18 x 8 x 12cm
• Product Weight: 1100g

Attention:

• After using it, please let the engine natural cool.
• Do not touch the alcohol burner, burned tube or the metal to avoid burns.
• 95% alcohol (self-prepared) should be used in the operation. Water, kerosene, gasoline, lighter oil, and liquor should not be added.
• The Stirling engine model is suit for people over 14 years old. Operate under adults' supervision.

Package Includes:

• 1 x Tractor Vacuum Engine