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Old 05-01-2013, 11:15 PM
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Gas air compressor vs electric

I just purchased a pieced together 60 gal air compressor Powered by a 7 up Honda engine. It has a dual piston air pump but I don't know the CFM and does not have any identifying numbers on the pump. My question is how the pumps stop compressing when the tank is full? Is it a clutch system that stops turning the pumps when the pressure build high enough? I ran it about 15 minutes until the pressure reached about 145lbs but noticed the engine idling rough and vibrating but kept on turning the pump. I stopped it because I was afraid to ruin something? Does anyone have an idea how this systems operates?
I purchased it from a relative that no longer had room for it. He didn't know much about it as he took it for a trade in. I payed him $100 for it so didn't ask many questions.

How could I tell what the CFM is? What psi I should expect for it to build up, etc.....?
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