Usmile® Low Temperature Stainless Steel Stirling Engine Generator Desk Models Education Toy Model Run Off The Temperature Difference

well made precision built little machine, good value for the money. with water well below scalding temperature in a styrofoam soda cup, and an ice cube on the top plate my little LTD sterling will run for an hour. starts out abot 180 rpm, still running at the end 30 rpm. gonna put some graphite on the friction points & see what that does. pobably gonna try some boiling water & see how fast it will go. good well built product. i would recommend it.

DO NOT LEAVE OVER AN OPEN FLAME such as a zippo. Melted the displacer in mine last night. Besides that though this is a very fun toy and fairly entertaining. It needs a fair temperature difference such as placing it on top of a cup of coffee or tea but it runs great. A bit squeeky and a little louder than I expected, but the novelty of having a fun piece like this is worth it. Even though I ruined mine I'd definitely purchase again.

Even the adults that saw this, who were unfamiliar with Sterling engines, were amazed. Great discussion starter, and a great way to get kids interested in science and engineering... not to mention that it is simply beautiful too. Definitely get one (or more).

Coolest new toy I've had in a while. 🙂

Well made, quality hardware. When I first run it there was a squeaky sound. I tried rubbing pencil lead (graphite) as suggested on the internet. Well, did not eliminate the squeaky noise so I use light oil. Now it is quite and seems to run faster.

The Stirling engine works quite well with either hot water as a heat source or with ice as a heat sink.

I bought mine for my dad for Father's day. Wanted to test it out and be sure it would work. I boiled a cup of water and put it into my thermos. Still running after 2 hours. I plan on getting myself one.

Bought Usmile Low Temp. SS Stirling engine model as a gift for my son. HE LOVED IT! Worked 100% as advertised. Will be a real conversation piece on his desk.