Baker fans are indeed one of the most fun things to run with your steam engine. I usually run mine every time I steam up. I think they would be good sellers if they were available commercially . After having seen full size Baker fans run at the Mt Pleasant , Iowa Thrasher Reunion , I can tell you that the miniature ones work exactly the same at loading down any engine belted to one.
D. E. Jones
It's my go to accessory now, it's such a difference running an engine on a Baker fan than just watching a flywheel turn with no load.