3-Blade Stirling Engine Model Science Experiment Stem Toy

Product Information Parameters:
Material: aluminum alloy + quartz tube;
Color: as shown in the picture;
Size: 150*80*90mm;
Net weight: 370g;
Heating tube diameter: 20mm;
Heating tube length: 50mm;
Propeller blade length: 45mm;

Product features: 
1.Exquisite ornament model: this is an excellent model of Stirling engine, which adopts the propeller blade to replace the previous flywheel image, which is more novel. It will be an amazing technology toy on your desktop. 
2. Excellent manufacturing process: the main body of the machine is made of aluminum alloy with frosted oxidized surface, which will not fade or rust. Cylinder and piston with high precision. The quartz heating tube does not burst even when it works under rapid thermal expansion and contraction, which is safer and more secure to use.
3. Technological toys: this is an interesting and imaginative desktop toy. The machine runs smoothly and reliably, with a perfect combination of texture and beauty. The pleasing running effect will bring you unlimited reverie, bursting out of the creative inspiration. 
4. Easy to use: the engine has been assembled and tested, just fill the alcohol lamp with 95% alcohol, light the lamp and place it under the hot cylinder for a few moments to preheat, manually dial the flywheel to help start, the engine can run continuously. Please do not touch the heated parts with your hands during operation to prevent burns, and do not apply any oil lubrication to the cylinder or piston. 
5. Widely used and holiday gifts: this product is suitable as a teaching aid and learning aids to do science and technology experiments, which helps to popularize science knowledge and cultivate innovation ability. It can also be used as a cool desktop ornament artwork. Also suitable as a great gift for birthdays, Christmas and other festivals for science and technology enthusiasts, family, friends, children.

Applicable age: 8+;

Packing list:
Stirling engine model *1
Alcohol lamp *1