Mini Hot Air Vertical Stirling Engine Motor Model Electricity Generator Science Educational Toys

Description:Name: Mini Hot Air Stirling Engine MotorMaterial: Aluminum alloy, Brass, GlassSpeed: 1300~1500 RPMBottom Diameter: 54mmHeight: 135mmFeatures: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 Candles light is not workable for this toy, please pay attention.3. Usually it will last for about 3 minutes, and need cooling to restart. This is a vertical structure, the temperature of fire spread to the piston and reduce the temperature difference. If you want it last for longer, take a damp cloth to cover the cylinder body to take away the cylinder heat. No oil lubrication.4. The stirling is already assembled, you doesnt need to to do anything assemble work.Package Included:1 x Hot Air Stirling Engine1 x Alcohol lamp