Stirling and Flame-licker models, Ericsson and Flammenfresser, Microcosm R01A Preview, PM Research

Microcosm / Jin has released a "scale" miniature Ericsson hot air pumping engine in cast brass with controllable butane power! I'm wondering whether I need to upgrade my PM Research model... to refresh our memories, what problems do these tiny pumping engines have? so we take a look at both running with the German Flammenfresser to remind us of the other type of hot air engine model!
My other vids: / thomaspcguruengines
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More to come!
Thomas PCGuru ENGINES