Stirling Engine Model Adjustable Speed Steam Engine Model Toy

Size: 110x 65x120mm Net weight: 308g Flywheel diameter: 60mm Base Material: Bamboo Heating Tank Material: Quartz Glass Product operation: The alcohol lamp is filled with two-thirds of 95% alcohol, ignited and heated for 30 seconds, turn the flywheel to start the engine, and it can be started in both forward and reverse directions. The top knob can adjust the air flow to control the speed.