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

I was concerned about that to Gil. I see no flywheel weights or walking beam or flying ball governor.
  I went on the microcosm site and the M17B is listed as throttle governed and M17 as hit and miss.
  If it is Not hit and miss than I have no interest in purchasing.
  Hopefully we can find out what it really is.