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

 Great video of the Pelton - I had one of those also, but never tried to run it and later sold it.

  Interesting that maybe some engines were specifically made to run on air?
     
        On air at least, the square enclosed turbine (whatever # it is), has been the real performer for me. I never got around to really trying out the TF10 in the same way (TF10 came much later). I should plan on running them both full-bore on all the PSI I can muster, and make a video (maybe in the Spring).