Solar-powered Stirling engine design details

I’ve put together a video of the latest version of the LT-2 Stirling engine. Because this low-temperature engine has minimal output power I sometimes consider it more of an artwork than an engine. I often refer to it as the sculpture engine.

What this engine lacks in power it makes up for in reliable operation. I have more than 200 hours of operation under solar power and at least 100 more hours running under incandescent light. It shows no sign of wearing out.

I’m now trying to decide if I want to work on the next step which would be a new design for an all-weather version that could be permanently mounted outside. Whether I build that next design or not, I thought I would make the details of this prototype engine available to other Stirling engine enthusiasts.

I’ve put together a very detailed discussion of the parts and what is important in the design and construction. There are so many photos I’ve split the information among 4 different pages. I tell you not only what I did but what I would recommend to make it better (that part is for my own benefit too). Here are the links:
Part 1
Part 2
Part 3
Part 4

I hope you find this useful.

The only thing I haven’t covered in detail is the engine controller electronics and software. I may put that up in the future if I get requests. I’m assuming most people will just be interested in the engine, not the starter and electronics.