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Thank you for your quick response. The displacer is made of polyurtherane foam. The cylinder's are both polycarbonate. I have found no air leak in testing and the piston seems to have little friction. The biggest problem at this point might be the thickness of the plates. I don't understand why that...

Thanks Ian! I have now completed machining the project! I am currently in testing/finishing the project and it is not working, even at high input heats (I am using a hot plate). That being said I plan on continuing to sand down friction areas and use lubricant for the shaft on my final presentation....

Thanks Ian, I adjusted the volume swept for both pistons to about 10:1 ratio, but this required changing my piston volumes. does drive piston weight affect the engine performance, especially for LTD engines?

Hello, This is my first time making a Stirling engine and I am trying to make the low temperature differential gamma model. I recently finished my own 3D design but I still have many questions and I would really appreciate someone with more experience to look over what I have so far. Hopefully I am ...

I am looking for a cheaper alternative to brass for a flywheel, any ideas? (for a LTD engine)

Does the same rule of thumb, -displacer swept volume should be 1.5 times the volume of the power cylinder- apply for Low Temperature Differential Stirling engines?

Nevermind, got it guys thanks!

Hi guys,

My name is Ben and I am working on an LTD Stirling engine for a manufacturing class! I have tons of questions and I look forward to talking with you all!