Air Compressor inquiry

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  #1  
Old 06-14-04, 08:28 PM
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Question Air Compressor inquiry

I want to get a compressor upgrade. Gregh, can you please refer me to a affordable oil type air compressor that pushes out 12cfm? I am looking in the price range of 300 or less US dollars. Thanks...
 
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  #2  
Old 06-14-04, 09:20 PM
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No, I don't think I can. Not enough $.

Here is something like you want but a bit less cfm and more money.

The only thing you might find in that price range is an oilless one but IMO I don't think they are a good long term investment.
 
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Old 06-17-04, 04:07 PM
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Thanks but that is too much money. Is there something smaller that you would recomend that would fit my budget? I am thinking that from 8 to 10 cfm would actually be enough. I don't really need 12. Thanks...
 
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Old 06-17-04, 05:46 PM
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Terminator20,

I really can't shop for you on this but I will make a general recomendation.
That is I recommend an oil type unit as you said you are looking for but further I would recommend against a direct coupled oil type which I happen to have.
I use it for a specific purpose to be able to carry it up a ladder and into tight spaces. It would not last if run for more than a few minutes at a time.

So, if you would be following my recommendation you would be looking for a belted, cast iron head that uses oil for lubrication.
I really have never seen a bad unit like this.
 
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Old 06-17-04, 07:30 PM
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Thanks. All I need is a recomendation which you have just provided me. Thanks. I will be going to harbor freight to look for a compressor that meats my requirments and your recomendation. Thanks very much!

EDIT...I found a compressor which I think will be a good one for me and meets my budget, however, it meets some of your recomendation except one it looks like. You mentioned pick one with Cast iron. This one says cast aluminum. Is this ok? Here is the link to it. http://www.harborfreight.com/cpi/cta...emnumber=47933
 

Last edited by Terminator20; 06-17-04 at 07:40 PM. Reason: I have more info
  #6  
Old 06-17-04, 08:46 PM
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You should be fine with this one.

<img src="http://www.harborfreight.com/cpi/photos/47900-47999/47933.gif">
Image credit: harbourfreight.com

The only downside with aluminum is if you abuse it by having it run for hours on end and get the head smoking hot.
A cast iron head will take it but an aluminum one will show its age quite quickly under this kind of use.

I would change the oil after a few hours of use.

Also, make sure you have a 220 volt plug for it.
 
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Old 06-18-04, 09:43 AM
Yoltihson
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Question


I've been searching for a compressor under $400 that will power just about everything (Not possible you say, I know, we'll say just about everything). Sears has a sale right now that makes this price limitation possible (both under $400). I found 2 Sears Craftsman Professional Series (relabeled DevilBiss) compressors that appear to be the best head on competition for what I'm looking for:

Portable, under $400, can run just about every air tool (including some hvlp guns and some sanders), durable and long lasting-

Of these 2 compressors, which one will:
1. Last longest
2. Power the most demanding tools the longest
3. Be the best investment

Compressor 1:
http://www.sears.com/sr/javasr/produ...e=null#tablink

Compressor 2:
http://www.sears.com/sr/javasr/produ...e=null#tablink

Please let me know your opinions guys asap, cause the sale ends Sunday. Thanks for all your help and in advance!!! Your experience can help some of us weekend warriors make a wiser decision. Thanks!
 
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Old 06-18-04, 10:53 AM
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I think you should go for the horizontal one. Hands down a better unit because of the oil lube and more cfm across the pressure range. You can also wire it for 240V. That 2-stage oil-free pump in the vertical tank compressor is suspect, plus (unless there's an error on the sears site)... where's the air???
 
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Old 06-18-04, 11:10 AM
Yoltihson
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Thanks for the quick reply Markiz37 -

I thought there was no question that the horizontal one would be the best one to go with until I saw:

Vertical Compressor is 175psi instead of (horizontal -150psi), and the vertical one is 2-stage. BUT, major drawback of....
[email protected] is only:5.6
[email protected] is only:5.1

Would higher psi and 2-stage outweigh the higher scfm (8.6) of the horizontal unit (Even though both tanks are 25 gallon) to allow it to keep up with the higher demanding tools?

Thanks again for your expertise.
 
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Old 06-18-04, 01:05 PM
Yoltihson
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Sears Under $400 Compressor showdown!

Compressor Question of the day:

Sears under $400 showdown-

Would the 2 stage 25 gallon tank, 175 psi but only 5.6 [email protected] be comparable to the single stage 25 gallon, 8.6 [email protected]?
 
  #11  
Old 06-18-04, 08:19 PM
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An oiless compressor is rarely a bargain for anyone except in certain circumstances. That is when the run time is going to be very short.

When it comes to cfm ratings of oilless types the numbers are somewhat misleading. You will get the volume of air they advertise but you must be aware that an oilless compressor spins at close to twice the speed as an oil type.
Its moving the volume of air but at the expense of wear in the equipment.
The example of an oil type compressor having less cfm than oiless is not what I am used to seeing. Normally for the same money the oilless will put out more air.

I see a compressor as a long term investment and with that in mind, what I'm saying to y'all, is forget about oilless.

Oh ya, the fact that a compressor can develop 175 psi is meaningless.
All air tools are designed for 100 psi and the meaningfull cfm rating is usually at 90 psi.
The cfm rating at 175 psi would be quite a bit less than at 90psi.
Rating a compressor that high is just done to confuse people.
An ad for a local hardware store this week was featuring a small compressor. They plastered across the title for the unit: "60 CYCLE AIR COMPRESSOR"..................Aren't they all?
 
  #12  
Old 06-19-04, 01:12 AM
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Question Air Compressor

when i start my air compressor i leave drain valve open for about 1 min to blow any water from tank.also when draining tank after use & all air pressure is at zero i restart compressor with drain valve still open to clean tank of any excess water that may have built up while down.what i would like to know is what im doing helping any with moisture or is it not doing any good or could i be damaging the compressor by doing the above.
thanks for your advice. mccoy
 
  #13  
Old 06-19-04, 10:00 AM
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mccoy,

You will do no harm by doing what you are doing.

An air tank is constantly wet or damp inside and although what you are doing is not harmfull, you really only need to ensure that water does not accumulate.

This thread is a bit off the topic of the original poster so if there are any more questions feel free to start a new thread.

Terminator20,

Let us know what you buy and how it works out.
 
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