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

Running on steam or air?
I suspect steam as I see water.
Actually very interesting, so much of the energy is used, you get only water out of the tail pipe rather than steam...

Very cool and amazing. Can anyone go slower??

Yep steam, slowly turning the variac lower and lower before stalling. I calculated it to 26.4 rpms. A non-reversing Jensen 25 may be able to beat that...