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

  I have a pmr #1 that runs but feels stiff - not the rod or crankshaft,
they are good.  It almost feels like there are 'O' rings....on the piston?
Could this be so?  And if so, how many should there be?  The builder
put three rings on the feed pump ram, more than the instructions,
but it worked with some fussing.  BTB - I'm not removing the head
to check the piston assembly until I know what to expect inside.
After all, it is a …….runner.

  Anyhow, if you could shoot me a page or two of the plans that show
the piston assembly and installation it would help.  More than one
motorhead agrees that the stiffness is, almost, rubbery.  It runs off
the pm vertical boiler but not for very long.

Thanks from Brooklyn,
Wayne

vertical boiler but not for very long.  If I could get it to tick over
on lung power, well, I'd feel like I was living in the tall cotton.