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

I've always thought it down right amazing that relatively small boiler is able to get and sustain, that rather large fan wheel, spinning as fast as it does.

Thanks for sharing that wind up with us.

Thanks, Charlie...The video is a bit long-winded but eventually speeds up to full-tilt.
They do spin quite freely- I did a quick test on air and they spin up even faster with just 10 psi. Great engines!