It works really good. An steam engine perfect for educational use. As it's plastic it losses water by joints. But it's perfect quality-money
I bought this for my daughter for her history project. The cons:. Too a long time to get in stock, package came bashed in, directions are in Mandarin. The pros directions have great photos, it comes with the screwdriver, kit is well made and goes together easy. However there are some tricks. First the screws that hold the Piston sleeves on; make sure the red flags has the large side out and it should be just a hair higher than the sleeve. Second thing to note are the Pistons themselves. This is critical and the engine won't run if you don't follow this. The connection to the Piston is off center, which means the first Piston installed should have the connection on the inside, the second Piston installed needs to have it on the outside. Failure to do this creates extra friction and the engine won't run. Once we figured this out the engine ran great. For a wick we used a scrap of 100% cotton from a t-shirt. I wouldn't hesitate to buy this again.
This was a fairly quick project for our 11-year-old. He was able to build 90% of the project following along with the photos. It was fun to watch him get it.
My son and I really liked building this engine together. The manual has clear pictures for building, despite being all in Chinese. Used Google Translate on smartphone to read the manual in English. Anyway the engine works very well and there's a lot to learn from this. Combustion to Steam to Mechanical motion to Electrical power. Worth the money, I think. Putting too much water inside will take a long time to boil. Don't make the wick too long or you get a lot of soot buildup. Have Fun!!
I was very impressed by this product. It is well built, the instructions are clear , and it works !!