PFCKE 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. Works good, liked the finish and quality, although the box mentions plastic, the content was asking shown in the product description

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.

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.

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.

Nice toy and seems very durable. Works as described.

The media could not be loaded. I had a little issue with the glass tube not being quite inline but now it goes great.