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This was a good idea. I replaced the cardboard flywheel with a bigger and more rigid one which had more space to put magnets on. However, instead of CDs, I used a plastic lid as the structure of its edge prevets the magnets from flying off at high speeds. And as you can see the engine runs a lot smo...

I have good news: My stirling engine finally runs! What I did was replacing the diaphragm which was made out of the palm of a rubber glove with a finger of a rubber glove. This effectively reduces the movable area of the diaphragm and therefore increases the forces acting up and down. Beyond, I repl...

I suspect that it may be to do with the diaphragm, I'v not had much to do with these, I recommend that you go to the top of the index page of this forum, and read through the thread on making a simple Stirling Engine, this has a bit in there that tells you how to make an epoxy piston that could rep...

Insufficient pressure, large cylinders I might be wrong, but wouldn't large cylinders help creating a bigger temperature differetial as the top and bottom are further apart? Also, I think the bigger amount of air in the displacer enables bigger pressure differentials. So I don't see why large cylin...

Having had a short break of frustration, I finally continued working on the engine. This time, I removed the rubber glove fingers between the displacer cylinder and the cylinder head (which seem like a horrible idea now) and replaced them with some proper silicone sealant. Furthermore, the connectio...

Thank you for your quick and very detailed reply, Ian! I've tried making the top of the displacer more air tight as you said. However, I'd like as many parts of the engine to be removable in case I need to change something. So instead of using solder, I tried reducing the air leak by sticking finger...

Hello,
I'm new to this forum. I've created this account to maybe get some advice to get my stirling engine running that I just built. I'd really appreciate you checking out my post about that.

Hello,
I'm new to this forum. I created my account to find troubleshooting tips for my stirling engine that I just built and won't run. I'd really appreciate you checking out my post about that.

Hello, I need some help getting my first stirling engine to run. The displacer is made out of cotton cosmetic pads. As it is quite heavy (about 10g), I added a counterweight (magnets) onto the flywheel. I have also checked for air leaks and couldn't find any major ones. When I disconnect the displac...