Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

As it seems we have now included the actual solar powered engines (Sun Motor & Sun Runner) of Solar Engines of Phoenix Arizona, and by extension, PM Research as well, I'll include here a link to another great Forum where I did a thread on some comparative experiments between the two engine types.

https://www.tapatalk.com/groups/modelsteam/viewtopic.php?p=1156505#p1156505



Sadly, it seems that the accompanying YouTube videos have been decoupled from that original thread, but I can probably post them back up here if there is interest!?!?