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Old 02-14-2015, 11:24 AM
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Air Compressor Advise

Looking for advise on a air compressor. Would a 10 gal one be big enough to run a impact wrench? My project is a 70 GM A-body.

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Old 02-15-2015, 11:28 PM
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Well 10 gallon is just tank size. I've run an impact off of my 2 gallon tank air compressor. Granted it's zip a lugnut off and wait for it to rebuild pressure and shut off, repeat.

The most important thing is cfm, usually measured at 40psi and 90psi. Air tools usually run at around 90psi so look at that rating.

A big tank is nice, as it gives some 'reserve' so the pump is not doing the on-off-on-off thing constantly like the little compressor I have. I'm sure smarter guys will chime in, I don't know everything.
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Old 02-16-2015, 07:17 AM
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A 10 gal. tank is probably big enough but just barely. My first compressor was a 25 gal. an air ratchets worked fine but when using a sander or grinder it would run constantly, it couldn't keep up. So what I did an still do even though I have a larger compressor now is any sanding, grinding tools are electric. Some of the larger pawn shops have 20 or 25 gal. compressors. Don't pay that price they have on them. Just take that price an cut it in half an wheel an deal from there. That's what I do. A 50 gal. upright tank will handle almost anything.
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Old 02-16-2015, 08:43 AM
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Thanks guys, good info & I like the pawn shop tip!
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Old 02-16-2015, 08:53 AM
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Look at the CFM rating.. Cubic ft per minute.. Takes about 11-12 cubic ft per minute to run spray guns and airtools effectively .. You will be a much happier camper i you get one large enough to keep up. those little portables are for air nailers and inflating tires and not much else..

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Old 02-16-2015, 12:09 PM
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most stuff in pawn shops is stolen, buying from pawn shops may bring bad karma to your shop

as mentioned any smallish compressor will be big enough for an impact wrench, but no good for die grinder
small compressors will also fill tires as long as your willing to wait
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Old 02-16-2015, 04:49 PM
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Really, bad karma! I'm sure many years ago when my apartment was broken into an my tools an cameras were removed they went to a pawn shop some where. But there are good deals, just have to haggle a little bit. I could imagine every pawn shop in Detroit is busting at the seams.
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