QENW Low Temperature Stirling Engine Model Kit - Educational Steam Heat Motor, DIY Electricity Power Generator for Science Experiments & STEM Learning - Perfect for Classroom, Home Labs & Physics Enthusiasts

Features:Speed up to 180-200 RPMStart temperature difference: about 20℃ Celsius/68 FahrenheitMaterial: carbon steel, nickel-plated carbon steel, stainless steel, glass, bronze, PVC foam and plasticsSize: 10*10*14cm/3.94* 3.94* 5.51 inWeight:250g/0.55IbPacking list:1* stirling engineAttention:1. Only use a little graphite dry lube quiet it down nicely if there is a little noisy. You can scratch off the graphite from the pencil with a knife.2. Prohibit to add oil to lubricate. Because the oil will mix with dust in the air to be oil-dirt. That will make the friction to be even bigger. The stirling engine can't run freely then.Stirling engine is traditionally classified as an external combustion engine. Please refer to wikipedia for more information about What is the stirling engine and How it works?

FANTASTIC SMART THING WITH EXTREMELY WELL MADE WHICH RUNS LIKE A DREAM----The stirling engine is produced with high quality material and elegant workcraft. this stirling engine adopts mirror surface stainless steel for the base, glass cylinder liner, zinc alloy flywheel. All the parts have done surface treatment to avoid rusting. Oil-free.

OPERATION EASILY----Pour a cup of hot coffee, put the stirling on the cup, it run magically. When it slows down, the coffee temperature is suitable for drink. Enjoy physical powertrain mechanism display and coffee. It also can work on top of ice cube. Some guys put the stirling on cup of hot water and put small ice cubes on the stirling upper plate. This makes the temperature difference much bigger than normal, then it runs even more fast and crazy. Just enjoy the toy!

LONG LASTING----It can run for 24+ hours continuous without any broken if there are continuous power supplies. One customer put the stirling on USB hot plate (excluded in the package) and the stirling runs on his desk for weeks. Don’t burn the stirling base or put it in the stove, the stirling plastic parts will damage.

PRIORITY GIFT OPTION FOR MANY APPLICATIONS----It is an amazing and fantastic product at this price. Its elegant gift package makes it spruce up and presentable. It has a wide range of application as, great gift for Kids' science project, Physical/mechanical learning, teacher’s Demo props on the class, birthday gift for friends, families, parents, kids, etc. Many of our customers come from school, colleague, etc.

AMAZING CONVERSATION PIECES ON YOUR DESK----It's funny to see people's looks and reactions when they squeeze a little shot for this Stirling engine. Put it on the cup which full with hot waters, give the flywheel a gently push, and get the flywheel going, and then it works like charm. All of your guests want to know what happened, ice-breaking success. What a marvelous toy!