Stirlingengineforum.com

Dead space imho might be useful in cases you need lower compression ratio. I'm not able to tell if your build is the case though :)

danalinscott wrote: ↑Fri Feb 14, 2020 9:56 am Blaf,
You have already contributed to the project by simply replying.

Glad to be of help :)

What a sad news about Inresol. I heard they had some financing issues, but was still hoping they will manage to get through.

Definitely interested :)

I bought one of Alberto's engines and would like to hereby state they are really nice and run beautifully! 10/10

Im afraid there is no such engine on the market :/ But in case you find it, please let me know, i need one too :)

Maybe you could buy several of these to reach requested power? https://www.inresol.se/products/inresol-v2-6

Cool stuff.
Would be cool if you sell also some small simple model for hobbyists/off the grid folks on a budget :)

Also there is this alternative for poor people :) https://seftonmotors.com/

Soo... i'm now in process of fitting pistons into cylinders, unfortunately the tube i got has some pretty rough dimensional tolerances. Or to be more specific, it's crooked as a bygeorge. Therefore i might need to get some better quality tubes before going on with the construction. However i at leas...

Damn, where did you manage to get them for scrap price? I want one too! :)

I would guess either insufficient cooling as you mentioned or thermal expansion of pistons increases friction to a critical level.
What materials have you used for pistons and cylinders?

This video imho nicely demonstrates the effect of a snifter valve.
[youtube]https://youtu.be/g3md9pYRfms?t=1m38s[/youtube]

Basic rule of thumb - less dead space means more power, therefore i suppose in upper picture the displacer isn't in top end.

Well, imho in an engine complex like this, connecting it to an expansion tank (with additional dead volume) might be more feasible.

For power regulation you may either put a valve on a channel between cylinders (limiting airflow causes engine to lose power, or better say - to waste power on pushing the air through), or you could add container with a lot of dead volume, again connected through valve to the rest of the system (add...