Micro engine, small engine, molding Hot Air Stirling engine model V4

We now bring you the ultimate stirling engine ---- Hot Air stirling engine model V4. 

With the help of four-cylinder engines ,this model will run madly and create electricity. You can apply one small electric device at the output end. 
It's an really interesting and imaginative toy for both children and adults.. 

It can be a great gift to your families or friends. It also can be used for teaching purpose. 

Technical Specifications 
Size: 280mmX165mmX160mm 
Weight:7.4 pounds 
Flywheel Diameter: 64mm 
Cylinder diameter:16 mm 
Piston stroke: 16mm 

What is stirling engine? 
The Stirling engine is a heat engine that is vastly different from the internal-combustion engine in your car. 
Invented by Robert Stirling in 1816, the Stirling engine has the potential to be much more efficient than a gasoline or diesel engine. 
But today, Stirling engines are used only in some very specialized applications, like in submarines or auxiliary power generators for yachts, where quiet operation is important. 
Although there hasn't been a successful mass-market application for the Stirling engine, some very high-power inventors are working on it. 

Cautions 
1.Please adopt 95% to highgrade alcohol to be the fuel to make sure the air tank can get more temperature, and drive the stirling engine. 
2.The temperature of Candle's light is not workable for this toy, please pay attention.