unusual model engineers Stirling engine.

my latest eBay purchase, this engine has a diaphragm power piston that I haven't seen before, the gentleman who made this was a clever man.

[@GoingtoHecq]

You definitely used some more unusual designs for everything you could here. The short stroke piston isn't super torque, but I like it as a design and I love the funky crank.

[@RetroSteamTech]

What an amazing engine David. Never seen one with a linkage like that before.

[@eifionjones559]

love the linkage and the idea of a diaphragm power piston

[@BlueHeelersSteamEngines-Jim]

How clever is that ball linkage in fact how clever is the whole design.

[@MrNostalgicdave]

The diaphragm power cylinder is intriguing and the ball race eccentric.😊

[@BlueHeelersSteamEngines-Jim]

@@MrNostalgicdave 😂

[@MrNostalgicdave]

Yes it took my fancy, was purchased on eBay, made the small gas burner and it works well 😊

[@joejoejoejoejoejoe4391]

How to make a crank, without making a crank, X2.