Well, after LOTS of web surfing and a few phone calls, it turns out the pump is a Quincy. Model 310, revision 22, made in 1962. They STILL make this pump, but are on revision 106 or something. It is two stage, PRESSURE LUBRICATED and features no load starting! That explains why I didn't feel any compression when I spun it by hand. A rebuild kit costs $90 and is readily available, hopefully I won't even need it. Should work fine with a 3 HP motor, so my electrical costs won't be as bad, and if I REALLY need the extra air someday, a 5 or 7.5 will jaz it up nicely. Designed to operate between 600 and 1100 rpm, according to the Quincy guy. The LP piston is 3.5 inches, the HP piston is 2 inches both with a 2.5 inch stroke, so not quite the displacement as some comparable new compressors. At $400 and considering the longevity this thing should have, I think I'm going to buy it. Should be able to let you all know how it works in a few days, oh ya, it's only 3 miles away (not the 3 to 6 hours I'm used to driving to get my little treasures!).Thanks for all the help. By the way, what finally broke the code on figuring out the pump was the link provided to the guy trying to figure out what kind of hyd pump he had (all this stuff sort of ties together). Playing around on that site generated the nomenclature I needed to get a search engine to find some REALLY GOOD industrial supply sites. The posts here were more pragmatic and what I needed in the field, so to speak. Thanks again, will post again ASAP. Mike
Chickamauga, GA
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