Really great teaching toy. Kids love showing it to the rest of their friends and family. Real brain builder.
This is freaking cool. I bought it for my dad because he is an engineer and teaches this. He loves it.
This model runs well and looks cool, too.
This is an awesome engine.Works flawlessly.It is also very durable.I wish i could give it a better rating.
This is an awesome little Beta engine. I used it along with some Youtube videos to educate my daughter on Stirling engines. Easy to set up and run with a little bit of lamp oil and runs very strong as long as there's a flame on the bulb. I thought that the glass and seals would get real hot since there's an open flame in direct contact with the glass, but no, it stays nice and cold, probably because the piston exchanges the air often enough to cool down the glass. We really like it!