Stirlingengineforum.com

Trevor, well done!

PM Research sells some powerful "toy" Stirling engines.

I have a a couple of theirs and both can run toy Mamod workshops.

With the one Manson engine I saw, it wasn't powerful. Alpha and beta engines are proven good engines.

Very impressive

It looks like it wants to run but has too much friction...

At the sewing shop, they have Singer and Dritz brand. The Singer oil has a slight smell - like 3 in 1 oil. The Dritz is 100% odorless. I reassembled using the Singer oil and it runs great. I still wonder though if the odorless Dritz may be better? Any odor outgassing is evaporating oil. So I wonder ...

Ian, What was your results with the gun oil? I have a Stirling engine with metal pistons, interestingly the manual calls for WD-40. But after many runnings, it stopped working. The hot cap got gummed up and carboned up. After cleaning it runs great but I will take it apart reclean and use sewing oil...

A strong second place design is a L shaped Alpha. You pay a price for more dead space due to distance between the hot and cold space but vastly simple linkage.

https://youtu.be/ieAXiSZcS90

Which steak engines had square pistons? With Stirling engines being over 100 years old there is no reason to reinvent them. I recommend sticking to proven designs. I've have a handful of engines and I tend to sell off bad runners. I've noticed that alpha engines give the best power followed by beta ...

How many hours are on the Melvin?

I think it needs many hours of running to see what is wearing...

I would think cast iron would work. I suspect the thermal property is similar.
The benefits of stainless is corrosion resistance.

After receiving it in the mail, I was puzzled as well. Why on Earth, is there so few cooling fins and not all the way up? I wish I had a lathe! Installing aluminum fins could be done in a clamping fashion so they could be removed if need be. Maybe I could drill out finned computer heat sinks? Take 2...

Speaking of cooling area, this is a dual gamma engine that I recently purchased from Germany. It runs good but I think it could run even better. I think there should be fins or a water jacket on the upper part of the displacer. I see no reason for that area to be "bare". Do others agree? I...

I have one of those engines, a good runner. That's an alpha engine, so no gland and no displacer. It should only be lubricated with extremely fine graphite powder. I recommend cleaning pistons and cylinders with cotton q-tips and rubbing alcohol. After you assemble it again, when you turn it over, y...

I have the same Stirling engine and "generator" and I believe it easily lights the led. Perhaps the generator is faulty presuming your engine has good RPM.

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Any luck getting the whisper gen running again?