In article ,
Tom Miller wrote:

"Littleberry" wrote in message
. com...

I would like to make a small homemade radial compressor in my amertuer
machine shop. I have a 3/4 hp electric motor (12 amps, 110v, 3600
rpm) with a 5/8" shaft that I would like to use to drive it. I don't
know where to start - can I expect a 3:1 compression ratis? I wonder
what kind of cfm at 45-50 psi I could expect.

[ ... ]

When you say "radial", I take it to mean that you want a piston compressor
with a number of cylinders radial to the crankshaft. The rest of the group
appear to think "centrifugal".

Not all of us. I was thinking of a radial graphite vane pump,
such as those made by Gast. However, I'm not at all sure that even
those could make the 45 PSI minimum which he wants.

A quick visit to their web page (they call them "rotary vane
pumps") shows the highest pressure available for any form of that is 25
PSI, so we can drop that idea. :-)

Enjoy,
DoN.
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