Stirling Engine Model Free Piston Adjustable Speed External Combustion Engine with Vertical Flywheel Physics Science Toy

Stirling Engine Model Free Piston Adjustable Speed External Combustion Engine with Vertical Flywheel Physics Science ToyNote The shipment of the product flywheel module has been changed and the black part have changed as shown in the first image of the productDescription Item Name Stirling Engine ModelSize 100 100 100 MMProduct Weight 350gPackage Weight 415gMaterial Metal Wood Quartz GlassApplicable age 14 years old and abovePacking BoxFeatures Novel Design The design of this Stirling engine model is novel and unique with a simple and exquisite shape and a sophisticated wooden base which shows more high end taste The top knob can adjust the amount of air conduction to control the speed of the Stirling engine which is easy to observe the dynamics of the piston and bring more good look High Quality The main parts are made of aluminum alloy and brass which are sturdy and durable The heating cylinder is made of quartz glass with low expansion coefficient and high temperature resistance fine workmanship perfect details and a combination of texture and beauty Fuel 95 alcohol need to be prepared by yourself pay attention to not add water kerosene gasoline lighter oil liquor etc Starting Method Place the Stirling engine model on a horizontal table add two thirds of 95 alcohol to the alcohol lamp ignite and heat for 30 seconds then turn the flywheel and the engine can run Working Principle The Stirling engine outputs power through a c