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Thanks a lot Petter. That's a useful rule-of-thumb! You're right about the superglue. For me it was a quick and dirty solution, to close and open again. It's sealing is not the best... In the end when I gathered enough understanding and get my test engine to run, I will machine a beautiful one on my...

Thanks for your thoughts Tom! The piston is so long, because initially it had a travel of 14 mm! :big smile: In the meantime i've learned, that a LTD stirling can only work with a low compression rate = Vmax / Vmin, therefore i reduced the piston travel. Now the comp ratio is ~1.2 I think its a good...

Hi, i'm new here. For a longer time i'm interested in the stirling engine principle and now i deceided to really deal with this topic. My first contact with stirling was with a cryo pump at work, which is actually a stirling engine "running backwards", driven by an electrical actuator and ...