Computer locks up when I try to download pictures--I'll try tomorrow from a different computer.

I just got an old air compressor, cast iron, beast. Must weigh over 100 pounds.
three cylinder, inline, single stage. 3 1/4"bore X 3" stroke, 16" diameter flywheel. Beast

Looks like a casting date of Jan 23, 1956.

Tag at the oil level sight glass says manufactured by Tecumseh, Model RA

Anyone have any leads on where I might parts and information. I probably want to replace the rings just because of their age.
I need to know at what speed I should run this.
Any information would be appreciated.

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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags