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Go Back   SR20 Forum > Main Forums > Garage Tips & Tricks



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Old 07-07-2005, 12:26 PM   #1 (permalink)
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Air compressors

Looking at possibly buying one but I don't want to spend a whole lot of money. I'm thinking of around the $200 mark. I don't really car if it is used or not, just trying to get some ideas on what you all might recommend. I have looked at a lot of air compressors and I know roughly what size in gallons I want at the CFM range @ 90psi I want too. Any help would be great. TIA.
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Old 07-07-2005, 01:25 PM   #2 (permalink)
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Picked one up for my uncle, kinda a gift helping me dozens of times with my car. He had a 3 gallon 1 horse one. I got a 13 gallon, 3 horse compressor for him. Only 100 bux at Costco. He uses the thing daily seeing as he does construction. Had it for around a year and still works great. Might **** check Costco for a good deal.
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Old 07-07-2005, 02:35 PM   #3 (permalink)
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what type of tools are you gonna be using with this compressor? you dont want something thats overkill, and u def. dont want something that isnt going to cut it.
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Old 07-07-2005, 03:12 PM   #4 (permalink)
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This is the best online resource I found when I was looking a couple of years ago:

http://mgaguru.com/mgtech/universal/ut1.htm

Read it all so you understand the importance of CFM and tank size. Everything else is meaningless. I'd recommend a 240V unit, cast iron, belt drive (that's what I got) -- but that will far exceed your $200 budget. Also keep in mind good air tools will be expensive too.


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Old 07-08-2005, 04:20 PM   #5 (permalink)
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yeah tank size i think is the most important cause it sux haveing to sit there and wait for a tiny tank to keep refilling plus if you are painting and you need a constant pressure for a long time, a tiny tank won't cut it
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Old 07-09-2005, 03:31 PM   #6 (permalink)
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Quote:
Originally Posted by tHe iLleSt RiCe
what type of tools are you gonna be using with this compressor? you dont want something thats overkill, and u def. dont want something that isnt going to cut it.
Excellent advice. First decide what air-hungry airtool you're likely to need, and then pick a compressor that will handle it easy. Most any compressor will supply the short bursts you need for an impact wrench, but others will die a slow death trying to keep up with a dual action sander for extended periods.
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Old 07-10-2005, 01:41 AM   #7 (permalink)
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i sell compressors all day long, so i think i know quite a bit about them. MaxSE-R_VA is right, just about any compressor can do one or 2 quick burst of just about any tool but they just wont cut it after that. dont be fooled and go by price nor the size of the tank. You will see a lot of bigger tank compressors that dont even have 150psi. some of those same compressors do less than 3hp running(which is bad)..and they always have a lower hp rating for their developed power.
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Old 07-10-2005, 02:09 AM   #8 (permalink)
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I work at aldi and we have air compressors right now that are 2hp with an 8 gal tank, for $90, I'm just not sure if that is enough to run any air tools though.
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Old 07-10-2005, 11:34 AM   #9 (permalink)
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HP is unimportant and psi is relatively unimportant. Tank size is somewhat important as it's your reserve.

What is important is airflow. Look at the cfm ratings at a given psi. THAT is the measure to use when looking at a compressor.
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Old 07-10-2005, 12:21 PM   #10 (permalink)
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I have this one at the house. It works fine for the stuff I do here.
http://www.sears.com/sr/javasr/produ...id=00916732000
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Old 07-10-2005, 02:47 PM   #11 (permalink)
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Quote:
Originally Posted by james vick
I have this one at the house. It works fine for the stuff I do here.
http://www.sears.com/sr/javasr/produ...id=00916732000
I have that same one except it's the 30 gallon one. I got it on sale for $260, it was a steal IMO.
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Old 07-12-2005, 05:55 PM   #12 (permalink)
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None of you read the tool tech link I put up did you

Like I said earlier, CFM and tank size is all that matters. CFM will handle continuous draw; tank size will give you a reserve if your draw is larger than your CFM output. Personally I'd get something that puts out over 10 CFM (which I did). No 120V compressor will do that. Also, I'd stay away from oil-free/direct-drive compressors - they are louder and less durable than oil/belt-driven compressors. Strap a die grinder or sander on your compressor and you'll understand really quick how valuable high CFM output is.

Check out the Campbell Hausfeld VT6271. It's an awesome unit.


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Old 07-12-2005, 11:00 PM   #13 (permalink)
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Quote:
Originally Posted by MrFancypants
None of you read the tool tech link I put up did you
Nope. Didn't need to.
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Old 08-21-2005, 11:20 AM   #14 (permalink)
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Quote:
Originally Posted by MrFancypants
None of you read the tool tech link I put up did you

Like I said earlier, CFM and tank size is all that matters. CFM will handle continuous draw; tank size will give you a reserve if your draw is larger than your CFM output. Personally I'd get something that puts out over 10 CFM (which I did). No 120V compressor will do that. Also, I'd stay away from oil-free/direct-drive compressors - they are louder and less durable than oil/belt-driven compressors. Strap a die grinder or sander on your compressor and you'll understand really quick how valuable high CFM output is.

Check out the Campbell Hausfeld VT6271. It's an awesome unit.


- Greg -
I looked at it, great info. Thanks.
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Old 08-21-2005, 11:49 AM   #15 (permalink)
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I forgot about this thread. I just reread what I typed and boy does it look rough. I understood already about CFM and tank size, now I just need to find one. I wouldn't mind a 240V at all but the means are not there. The house waon't let me run any new lines anywhere as I have a foundation and really no attic.
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Old 08-22-2005, 03:38 PM   #16 (permalink)
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Quote:
Originally Posted by MrFancypants
None of you read the tool tech link I put up did you

Like I said earlier, CFM and tank size is all that matters. CFM will handle continuous draw; tank size will give you a reserve if your draw is larger than your CFM output. Personally I'd get something that puts out over 10 CFM (which I did). No 120V compressor will do that. Also, I'd stay away from oil-free/direct-drive compressors - they are louder and less durable than oil/belt-driven compressors. Strap a die grinder or sander on your compressor and you'll understand really quick how valuable high CFM output is.

Check out the Campbell Hausfeld VT6271. It's an awesome unit.


- Greg -
Yup, belt driven compressors are WAY quiter and last a much longer time. Turn on a direct drive and you can't hear sh*t from across the street.

We have a really old compressor (not even sure what brand, its covered in paint) that is a 240V belt driven with a 30 gallon tank. It will keep up supply on my impact even when the compressor is running.

For the new house, it will be connected to hard lines in the garage. These are 1,000 times better than having a 50' chord for it, as compressor hose generally sucks for ease of winding/unwinding.
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Old 08-27-2005, 10:04 AM   #17 (permalink)
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Quote:
Originally Posted by daveracer
I have that same one except it's the 30 gallon one. I got it on sale for $260, it was a steal IMO.
same one I got too .
word to the wise,
dont bby used on this one,
depending on the age and maintenence on these tanks they can be rusted from the inside out due to condensation.
Ie. If someone does not drain the moisture you could be sitting on a large rust tank that could someday blow out on you ... so if you buy new at least you know how it has been maintained exc for piece of mind.
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