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

Paula,

It does indeed say USA on the boiler with what appears to be a serial number.  I now have that one all cleaned up and the S50 runs great.  I have attached an "after" pic.

Still working on the black one.  Turns out it is not black, but a chocolate brown.  Not sure I like to color.  It may become black.  As I mentioned before, it is built very robust.  Huge babbitted main bearings.  The main connecting rod has complex bearing adjustments using wedges and screws at both ends.  The shaft of gear driven crank that drives the steam valve was so worn that I had to make a new one.  I also had to sleeve the hole that the shaft rotates in.  They look original and work fine.

There were no piston rings.  So I made a set from an old cast iron black pipe fitting.  They came out pretty nice.

Just wish I had more information about the engine.  It was definitely and working engine and I would love to know what it did.