Sell Hot Air Stirling Engine Motor Model Flywheel Design Full Metal Physics Science Experiment DIY Gift for Teacher Student Adult Birthday Christmas best price

Hot Air Stirling Engine Motor Model Flywheel Design Full Metal Physics Science Experiment DIY Gift for Teacher Student Adult Birthday Christmas Features:  🔰 Diamond-shaped piston structure: the valve piston and the power piston are respectively located on the left and right sides of the coaxial relative arrangement, driven by the gear respectively two groups of connecting rod to drive the piston, the two piston movement side force is zero, greatly reduce the movement resistance. 🔰 This model is equipped with 4-LED generator and voltage test meter, relying on the coordination of each precision component, drive the LED motor to light up, make it run normally. 🔰 At the same time, through the voltmeter test, the voltage can reach more than 3.4V. Under ideal conditions, the maximum test voltage is 4.2 volts. 🔰 Made of high quality metal, enabling the model sturdy and durable. Metallic texture and flying wheel appearance make it an eye-catching desktop decor. 🔰 Fuel is anhydrous ethanol or 95%  alcohol. Ignite after filling the fuel, wait for the water to boil, then gently push the flying saucer, it will start to rotate. Specification: Model: QX-LX-01 Material: Metal     Size: 18 x 9cm Weight: 716g/25.3oz Package Size: 235 x 130 x 160mm/9.3 x 5 x 6.2in Package Weight: 904g/31.9oz Packing List: 1 x Stirling Engine Model DIY Kit