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Old 10-02-2013, 04:18 PM   #1
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Air Compressor

What kind of air compressor does everyone use around the shop? Thinking this is a tool I need to add to the list. Uses would be things like inflating tires, taking wheels on and off, sanding/grinding tool attachments, maybe spraying some raptor liner. I can't put a huge tank out back and hook lines up so was hoping some of you have recommendations.

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Old 10-02-2013, 07:31 PM   #2
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I use a Dewalt air compressor. It is semi portable with just a 15 gallon tank. The motor is 1.8 HP and will move 5.4 SCFM at 90 psi. Max pressure is 200 psi. It works well and doesn't take up a lot of space in the garage. Quality seems real good, and it should last a long time.

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Old 10-02-2013, 07:44 PM   #3
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Gonna need at the minimum a 6.5 hp with an 60 gallon tank if u plan on using any air tools. An 8hp 80 gallon is more ideal. Yes a smaller one will run an air tool but it will never shut off and get hot and now your air compressor just turned into a huge water pump.
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Old 10-02-2013, 08:15 PM   #4
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I have a York 2 Piston belt-driven air compressor bolted onto the side of my engine block. That thing can pump out some serious air. I have a 3 gallon tank connected to it and it fills up my tires pretty quick. Maybe 30 seconds per tire. Not sure about using it for power tools however, Im sure it could be done if I had the right fittings.
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Old 10-03-2013, 07:32 AM   #5
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For serious garage work, you need a large tank and a decent compressor. Air tools deplete the tank in short order' and need a motor that compresses lots of air quickly. Before you buy, check out what your local tire shop and what your local mechanics use.....talk to them....you can learn a lot before you plunk down some $$$$ on something that won't do what you want.
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Old 10-03-2013, 09:01 PM   #6
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I have a true 5 hp compressor that will run any of my air tools just fine. Even my plasma cutter which uses much more than most tools.

NEVER look at the advertised (Sears, Home Depot, Harbor Freight) hp ratings. Look at the rated CFM at 90 PSI. If you are curious about the real motor HP look at the data plate on the motor. If it says SPL under horsepower, walk away. That's code for "we're lying about the horsepower and don't want you to know it". If it says 5 hp, your good to go. Mine produces about 18 CFM at 90 PSI with a true 5 hp motor. I don't think any of my air tools, except the plasma, use more than 9 cfm.

Single stage compressors will make more air for the motor power, but top out at about 125 PSI. That's plenty for garage work. Two stage compressors go to about 175 PSI but have lower CFM per HP. Air tools like 90 psi.

Tractor Supply has some real good units for reasonable prices, especially when on sale. Look at the Ingersoll cast iron twin cylinder models with vertical tanks.

When you get to 7.5 HP the cost is much higher and 5 true hp will run your tools.

A 60 gallon tank works well. 80 might be better under some circumstances, but the compressor has to keep up with the load or the tank size is meaningless.

Be sure to read the data plate on the motor and don't get scammed by false claims!
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Old 10-03-2013, 09:15 PM   #7
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No clue what this thing is. I found the tank at work about to be trashed, its at least 30-40 gal. found a compressor on CL for $75 with a rusted tank. belt and valve ran me another $35. holds 110PSI for a week! I am pretty proud!

the previous owner had a MALE fitting off the regulator and a female on each end of the hose, you can imagine what happened when I filled it up and pulled off the hose....
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Old 10-04-2013, 08:40 AM   #8
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Thanks for all of the input. Gives me a great place to start! Gonna do some non air related jeep work tomorrow as soon as I get out of the woods.
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Old 10-04-2013, 09:20 AM   #9
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Just found this at my buddy's work place. They are getting rid of it ! 80 gal. 5,4 hp, 175psi Craftsman. Could be a score !


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Old 10-04-2013, 10:11 AM   #10
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That looks good!

It's a two stage. What is the horsepower stamped on the motor data plate?

That should have no trouble keeping up with an air tool.
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Old 10-04-2013, 11:14 AM   #11
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I have this in the garage...works fine for airtools:

Husky 20-Gal. Portable Air Compressor-F2S20VWD at The Home Depot

I have this in the Toyhauler (5th wheel)...mostly for re-inflating 12 tires.

Industrial Air Contractor 4.5-Gal. Portable Electric Air Compressor-CSB1680521 at The Home Depot
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Old 10-04-2013, 11:17 AM   #12
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Couldn't see the HP stamp. Have to go back when I get off work and check it out more.

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