Hot Air Stirling Engine Model Kit Science Toy Physical Principle Metal Model Toys Teching * Prohibit to add any

* Prohibit to add any oil or water to the heating cylinder or the power cylinder

Product Weight: 630g

which can run at high speed for a long time without wear

and can be used with confidence

or they can walk on their own

Hot Air Stirling Engine Model Kit Science Toy Physical Principle Metal Model Toys Teching * Prohibit to add anyDescription: Product Name: Stirling Engine Model Color: As shown on the picture. Material: Metal,Glass Usage: 1. Security start step (1) Put the engine model in a horizontal position. (2) Turn the flywheel gently with the hand, check whether the flywheel is running smoothly if there is a strong sense of astringency, check whether the connecting rod is connected to normal, whether the piston in the air cylinder and the spindle on the copper sleeve have