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

  Well....I built one last year, and when running as a motor it
for sure chatters at some speeds.  Perhaps an earlier production
batch was machined closer to specs.  It does work, looks nice, and
with the heft has real American-Style gravitas.  It would be better
without the chatter, but... I'll live.

Good Luck,
Wayne