Low Temperature Stirling Engine Classroom Teaching Stirling Engine Kit Steam Heat Educational Model Brass Aluminum Stirling Engine-HZZ92 Pro Black

The media could not be loaded. I have been wanting to order one of these for a very long time and finally pulled the trigger yesterday. I have it set up and running on my desk using a coffee cup warmer as a heat source. It has been running now for about 4 hours and is as intriguing as I hoped it would be. But not without a small problem in getting started. I am an engineer by trade and am fascinated by just about anything mechanical in nature and design. I unboxed the engine this morning and set it up and got it running but noted that it ran slower than expected and had a noticeable ticking noise and a roughness in the motion of the piston. I disassembled the piston and removed the glass tube/cylinder to find the o-ring that holds it in place had been damaged during the assembly process causing the cylinder to be misaligned. I removed the skived off piece, cleaned the cylinder and reassembled it taking extra care in aligning the cylinder. After replacing the engine on the hot plate and giving it a spin it worked like a champ and has been running continuously ever since. It speeds up and slows down as the hotplate cycles on and off so it is not just a monotonous noise but more like a background fluctuating rhythm. Even with this slight hiccup I am extremely happy with my purchase.UPDATE;This engine has been running on my desk for 8 hour a day since the day I got it without a single hiccup. I have gotten tons of comments and questions on it. I would highly recommend it if you are thinking about buying one. I am very very pleased.

Enjoyable little device, fairly quiet, quite smooth. I had no flaws except for that same o-ring as mentioned in another post, but it doesn’t affect it.

The media could not be loaded. Not it's intended use case I'm sure but it's kind of an interesting visual addition to my PC. After about 30-40 mins of playing a game the graphics card will get warm enough for the engine to start working (around 74-75 degrees celsius). The pistons do make a constant tapping noise when it's moving so I don't know how long I'll actually keep it in there since a quiet PC is preferable but it's cool for now.

I put mine on top of the toaster oven so it really gets going.

I used this to teach a homeschool group. The Stirling Engine worked like a charm. Absolutely no problems.

This is an extremely well built small Stirling engine. It has worked every time I have shown it. I usually fill a coffee cup with boiling water and wait about twenty seconds. You have to turn it a bit to get it to start. Of course, it can do no meaningful work, but is fun to watch and it uses excess heat as well.

Es un juguete para niños, es demasiado pequeño.

This product does not have the proper bearings for a sterling engine that is designed for low temperature without major drag, I had to pop the sealed Covers out of the bearings, remove the grease and installed oil for clocks and leave the covers off in order to bring the sensitivity up. The foam displacement is too small for body temperature Displacement. Overall it will work with a hot cup of water which serves it's purpose but nothing like the Kontax ks90. In that note, I hope that helps somebody else out there. The workmanship seems to be OK but if you want to run temperatures that comes from body heat you would need a bigger Foam displacement piston Cylinder.

Picture perfect and functions well ....worth the money

The enagine is built very nicely

I am a fan of small pieces of human ingenuity and enjoy learning how they work, so I picked up a Stirling engine. This Sterling engine is outstanding in appearance and style and performs as described.Playing around with it, I discovered on a normal ceramic mug filled with water just below 100 deg. C ( 212 deg. F) it ran for 69 minutes. On an insulated mug on bottom and a chilled heat sink on top, it it has run for 168 minutes, and is still going (I have other things to do, so....)The tempered glass components give a good view of the working mechanisms. If you like this kind of thing, I would recommend it. If you are a science teacher, professor or an engineer this model gives a good representation of the physics involved.

Works better than expected. It is extremely well built and runs quietly. I have it sitting on the edge of a gas fireplace and when the fireplace is on I just give it a little turn and off she runs. Works great. Just remember that it is a low temperature Stirling engine so don't overheat it.

Very well put together, solid feeling, and a lovely piece of engineering. And beautiful, too.I tried one of the cheaper ones which just felt flimsy and clunky compared to this.A pretty expensive toy, but what a satisfying toy it is. Recomended.