Sunnytech Low Temperature Stirling Engine Motor Steam Heat Education Model Toy Kit (LT001)

I got this for my very gadget driven husband and he loved it. He loves seeing how things work and this is a fun toy that he uses almost daily. You should definitely wipe the bottom of the device dry when you are done using it.

Nice product, the side transparent portion makes me to understand the mechanism easily. I've tested it with a cigarette lighter, and excellent

Item came very packaged and super easy to assemble. The longest step in gettign the engine running is heating up the water to power the engine. Extremely well tuned to work in the temperature differential between a hot beverage (140 deg F or 60 deg C) and room temperature (75 deg F or 25 deg C) you can play around with differnet temperature differences by using ice, or different hot drinks from too hot to drink to barely warm. It is abeafully executed design and is great to show an example of one of the classical heat engines taught in undergraduate thermodynamics class. Persoinally I was mesmerized by the engine and its operation. It is great fiun to take to meetings and geek out with colleagues and co-workers if you are in a nerdy geek work place or just watch and admire for any environment. Great gizmo at a good price, glad I made the purchase.

I was amazed that it works down to a T difference of merely 25 ºC, so very efficient design. The Stirling engine is a bit squeaky, but this can be solved by *SPARSELY!!* applying Teflon oil (no real oil, but Teflon nanoparticles in emulsion; solvent evaporates, leaving a thin Teflon film on metal parts). It's a great gizmo to run; sad how few people know about the thermodynamics behind the cycle process. Makes me wonder what kids get taught at school nowadays.

値段的にも納得して購入しました。低温型は安全で幼児でもメカの観察ができてとても良いものです。