I had spent 2 years on an experimental 4 cylinder "swashplate" stirling engine and just about perfected it...then it was gone:cryyy:
The only engine from that era I still have is a spirit fired traction engine which happened to be in the shed, still under construction when the house burnt down. That was 20 years ago...it is still not finished
made a pair of them in the past ..... actually, i think they're collecting dust in some places, but really don't remember where i put them (my home is a mess, LOL)
The principle is funny, anyway.
LOL, just had a demential idea ..... paint AR black the heat chamber, fire it with a laser, then use a RPM meter ..... calibrate the RPM meter scale in mW, more RPM, more laser power ..... ROTFL :crackup: