Feature:1. Novel Design: The Stirling engine model is creatively combined with the toy car, powered by the Stirling engine model, driving a simple toy car walking, with a variety of ways to play, full of fun.2. Direct Use: The product itself has been assembled and can be used directly, its excellent quality and exquisite appearance also make it a high collection value and can be used as a high grade gift.3. Exquisite Appearance: Lifelike appearance of the car, both beautiful and texture, polished meticulously, bright colors, not easy to rust and discoloration. Slot fixed alcohol lamp, more safe and reliable.4. Function: By operating the engine, children will observe and understand the operation process, and more intuitive understanding of the working principle of the Stirling engine, thus deepening the interest in physics.5. Wide Range Of Applications: The model kit has a wide range of applications, gifts for children's science projects, physics mechanical learning models, props for teachers to demonstrate in the classroom, to friends, family, parents, children, and so on.Specification:Item Type: Stirling EngineMaterial: Zinc AlloyProduct Size: Approx.170 x 120 x 96mm / 6.7 x 4.7 x 3.8inHow to use: 1. Buy 95% concentration of alcohol, concentration below 95% of alcohol combustion value is low, may cause the engine can not run normally. 2. Add about two thirds of the alcohol in the alcohol lamp (not full, full easy to overflow). 3. Ignite the alcohol lamp on the heating cylinder to preheat, about 2 minutes, to the front of the car, clockwise dial the flywheel, to give the engine an initial power, otherwise the engine will not run. (The flame is adjusted larger and dial the flywheel with a little more force, the engine is easy to start) Precautions and troubleshooting methods: 1. It is best to use in a windless environment (wind flame will be biased, combustion is not added to the cylinder, resulting in the engine does not turn) 2. The car will produce wind in the process of travel, resulting in flame drift, heating less than the hot cylinder, the car will sometimes appear to go, this is a normal situation, not engine failure. (can be appropriate to the wick to the front to adjust some) 3, pay attention to the heating cylinder in the gas transfer tube can not touch the heating test tube wall, causing too much friction engine will not rotate. 4. Check whether each node is stuck, if the engine speed is low or even result in the engine can not run.5. The wick of the alcohol lamp should not touch the heating test tube, it will cause the heating test tube to break. 6, heating cylinder and power cylinder can not add any liquid (water and oil and so on), otherwise the engine friction is too large, the same will not run. 7. If the engine is running normally but the trolley cannot move, please check whether the wheels are stuck or whether there are debris on the wheels, etc. 8. Note that the car should be lightly put, otherwise it is easy to cause damage to fragile parts. Safety reminder: when heating can not touch the heating test tube and the surrounding metal parts, easy to cause burns..Package List:1 x Stirling Engine1 x Alcohol Lamp1 x Blue Alcohol Cover1 x Alcohol Wool1 x Alcohol Bottle Mouth Cover1 x Screwdriver1 x Hex Wrench1 x Tweezers1 x Elastic Cord1 x Syringe1 x User Manual