Specification Model SH 06Product Name Stirling EngineFlywheel Diameter 60mmFlywheel Material BrassBody Material BrassBase Material BambooHeating Cylinder Material Quartz GlassSize 110x 65x120mmWeight 308gProduct Operation Fill the alcohol lamp with two thirds of 95 alcohol ignites and heat for 30 seconds turn the flywheel to start the engine you can start it in both forward and reverse directions and the top knob can adjust the air flow to control the speed Note 1 No lubricating oil is allowed to be added to the cylinder piston 2 Product data are all manually measured there may be slight errors 3 The color of the base may vary slightly please refer to the actual product Package included 1x Stirling Engine Model