This motor is a good model and works very well and would buy it again. In the paperwork that came with the motor states that it runs best with 95% Isopropyl Alcohol however it is difficult to find anything stronger the 90% Isopropyl to which does not burn with the amount of heat need to run the motor. Kerosene works very well however you will need to start the motor by hand after it heats up.
When running I noticed a bit more vibration in the motor then I thought should be there. This vibration did cause the motor to move on the table it is on. I found that the (2) pistons rods were at a angle where they attach to the flywheels, I placed a spacer between the piston rods and the flywheel so the piston rods were stright and true which, allows the motor to run with a lot less vibration. The thickness of the spacers are 1.5mm
Besutiful little machine. Works perfectly.
Attractive and precision built model of an Alpha Stirling engine. The tolerances are close enough to get good performance. Put a small dab of machine oil on the high temperature steel piston shaft for smoother running.There is another model with 4 wheels that rolls under its own power. Great for fun or class room demonstration. One very nice thing about this package is that spare parts are included for future repairs.
Best gift my son received shows everyone who comes over to our house. Everyone is so intrigued as to how it works, which makes it even better to listen to my son explain it
Excellent desktop product. Professionally finished and looks good even standing still. Fill the burner with alcohol and watch her chug along. Some spare parts included make me think this will be sitting on my desk as a conversation starter for many years. Learn the closed system gas laws science behind this device and look even smarter when you get the thing going.