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Air compressor help

Indy_500

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I may have shown a pic back from xmas that i got a new air compressor, well we returned it and figured we'd wait till spring to start shopping again because our electricity in our garage *****. So, i'm stuck between a puma 20 gal, husky pro 30 gal, and craftsman professional 25 gal horizontal/27 gal vertical. I like the idea of the horizontal compressor so it won't ever tip over. These are all oiled and belt driven. THe puma says 2 hp running and 5.5 hp peak, what does this mean?
 
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pipsters

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Check out northern tool they have a reconditioned 30 gal 155 psi unit for $299 which is the same kobalt $429 unit.

Not sure about puma but by the specs the Craftsman puts out a little more air (although its inconsequential). I own the Cman pro 25 gal horizontal unit. It is a good compressor but I bought it new 2 years ago for <$350. I also prefer a horizontal unit for ease of movement. All should run off 120v fine, pulling right around 15 amps running (5.5 cfm on 120v is basically the max you can do).

The husky I believe only 135 psi, not sure about puma, the Cman is 150 psi and kobalt/northern tool 155 psi. The husky, for its size with only 135 psi, would be out imo. With the puma only 20 gal, I would be hesitant to buy it at its price point especially if less than 150 psi.

If going with a vertical unit I would get the northern tool compressor.

I think all but the Cman are cast iron pumps, the Cman is aluminum w/ iron sleeves like everyday modern cars including my 175k mile Volvo. It's lighter but I do not believe effects durability at all, in fact aluminum actually costs more so its not a cost issue.

Do NOT buy a 120v compressor based on CFM, buy it based on tank Psi and storage (size). After buying I realized all consumption specs are based on 25% runtime, that is why I bought the Cman unit (5.8 cfm) and later I realized storage and psi were key in a small home use compressor.
 
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David79z28

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Also, pay attention to the CFM of the tools you plan to use and the CFM of the compressor.

Buy one big enough to supply the tools you are going to use.... On the other hand there is no reason to waste money on a compressor that you won't use all of it's resources, unless you plan on needing more CFM later...
 

pipsters

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Also, pay attention to the CFM of the tools you plan to use and the CFM of the compressor.

Buy one big enough to supply the tools you are going to use.... On the other hand there is no reason to waste money on a compressor that you won't use all of it's resources, unless you plan on needing more CFM later...

Do not listen to the above. You will not find any 120v compressor that will run air tools continuously. Do not buy based on CFM with the units you are looking at.
 

oilslick

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Just remember Buy cheap, buy twice. Looking back I can only recommend getting at least a 60gallon two stage that spins the compressor @1150rpms or less. Look for an old Quincy they are tuff and super quiet , I can talk on phone while standing next to mine running. built in 1967 still kickin
 
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David79z28

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Do not listen to the above. You will not find any 120v compressor that will run air tools continuously. Do not buy based on CFM with the units you are looking at.

??? I simply suggested that he compare CFM of the tools he plans on using vs compressors.

Who said he is running tools continuously?

I got by for years with a 120v 26 gallon husky. I was using it to primarily air up tires, airbrushing, and a spray gun for painting motorcycle parts and helmets. Worked great for the tools I was using and how long/often I used them.

What is wrong with buying a compressor to match the tools you use and how often you use them?

Not everyone needs a huge compressor...

Sorry OP, I have never used Puma or Cman compressors.

I think he was looking for an opinion on those, not advice on size/ etc..
 

bsaint

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huh?

I know what size i need

Just curious about reviews on these and if i should stay away from one of them. I like the Puma, is it a good brand?

5.5hp peak is like a free load rating. How often are you going to run a compressor without a load? Even unloaded it has to still spin the compressor. So it comes down to a 2 hp compressor which realistically makes like 9 cfm on a good day at low psi. If you want to run guns at 40 psi its your compressor.

Hp is directly related to CFM. In a perfect system it would be high efficiency. So get the highest CFM output @ tool PSI for the biggest motor you want to run.
 
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OP
I

Indy_500

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60 gal is not possible. Begged and Begged and Begged. Seems pointless to spend $400 on a 20-30 gallon when i could spend $400 on a 60 gallon. "no space" mom says. And my parents don't like the idea i can't move it around. It's a b-day gift and they finally realize cheap compressors just don't work. They bought me a coleman 26 gal powermate for xmas, oil-less for a "super good deal" well we plugged it in, and saw an arc flash inside the thing. We thought it was our wiring which it could be (our garage electrical ***** and an electrician just quoted us to add a separate breaker) and we took the coleman back a few days after x-mas. Now i'm leaning back towards the Husky pro since 30 gallon seems really nice. I don't know if 20 gallon will be enough. I want the capability of sandblasting (smaller snowmobile parts) and i'm sure 30 will be enough for what i need but 20 is pushing it. The craftsman pro's seem nice but prices seem steep.
 

pipsters

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??? I simply suggested that he compare CFM of the tools he plans on using vs compressors.

Who said he is running tools continuously?

I got by for years with a 120v 26 gallon husky. I was using it to primarily air up tires, airbrushing, and a spray gun for painting motorcycle parts and helmets. Worked great for the tools I was using and how long/often I used them.

What is wrong with buying a compressor to match the tools you use and how often you use them?

Not everyone needs a huge compressor...

Sorry OP, I have never used Puma or Cman compressors.

I think he was looking for an opinion on those, not advice on size/ etc..

Comparing means nothing. That is my point. Here:

"Buy one big enough to supply the tools you are going to use"

If you do that you will not be happy. Pretty much every air tool out there runs 20-25 CFM. From die grinders to cut off tools to impact guns. When buying a 120v compressor you don't care about CFM because none have the ability to power your constant run tools. You should buy on storage capacity meaning PSI and volume (gallons). The bigger the tank, the bigger the pump generally.

I understand your point about not over buying, that is a good one. Hard to overbuy w/ a 120v compressor. Was that ever his issue?

If you look at what I wrote I never recommended a 60 gallon compressor. I recommended either mine, a 25 gallon unit, or a 30 gallon unit.
 

pipsters

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60 gal is not possible. Begged and Begged and Begged. Seems pointless to spend $400 on a 20-30 gallon when i could spend $400 on a 60 gallon. "no space" mom says. And my parents don't like the idea i can't move it around. It's a b-day gift and they finally realize cheap compressors just don't work. They bought me a coleman 26 gal powermate for xmas, oil-less for a "super good deal" well we plugged it in, and saw an arc flash inside the thing. We thought it was our wiring which it could be (our garage electrical ***** and an electrician just quoted us to add a separate breaker) and we took the coleman back a few days after x-mas. Now i'm leaning back towards the Husky pro since 30 gallon seems really nice. I don't know if 20 gallon will be enough. I want the capability of sandblasting (smaller snowmobile parts) and i'm sure 30 will be enough for what i need but 20 is pushing it. The craftsman pro's seem nice but prices seem steep.

Buying a 30 gallon over a 60 gallon makes a lot of sense in many areas, David's point about not over buying is excellent. Keep in mind guys on here like to many thousand dollar tool boxes when a fraction of that is "needed". Home mechanics will buy Snap On tools just to say they have Snap On when Craftsman will suffice. This site must be based in Texas because apparently on here "bigger = better" in more ways than one. A bigger compressor is a PITA to use when it comes to every day things, and a smaller 120v unit will do you fine. If you are looking at that vertical husky I would strongly suggest you take a trip to Northern Tool if you have one and look at the $299 unit. It would be equivalent to the husky if it had 34 gallons. IOW it will hold 4 more gallons of compressed air than the husky will in the same size tank. Important things when you are almost 100% using stored air and not produced air as you would with a larger compressor, especially for things like sand blasting. Since you said you want the ability, a sand blaster depending on size uses something like 10-15 CFM @ 90 psi, you need to focus on STORED air not air being produced by the pump when rocking a 120v unit.

A higher PSI in the tank will also allow you to use an impact at a higher pressure. On my Craftsman, I have to set the regulator at the tank to 130 PSI static to see 90 at the tool. If you get the Husky you will barely be above that and only just momentarily. If you do get the Husky don't forget the 10% movers coupon.

You originally mentioned the Sears unit, I had assumed you looked at the price and were Ok with it. Yes it is more expensive. If I were buying again, I would buy the Northern Tool $299 compressor. Best bang for your buck.

Really in your shoes I would buy used, you obviously have an interest at an early age and will probably be buying a bigger compressor in the future. Buy used now so you won't lose all that money in depreciation.
 

Vicegrip

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CFM at 90 psi. Apples to apples. Don't get hung up on the tank size. At the same CFM a 20 gal tank will drop off faster but also rise faster. Total tool run time is based on CFM, period.
 

hofferwood

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May 8, 2010
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DownRiver Michigan
I may have shown a pic back from xmas that i got a new air compressor, well we returned it and figured we'd wait till spring to start shopping again because our electricity in our garage *****. So, i'm stuck between a puma 20 gal, husky pro 30 gal, and craftsman professional 25 gal horizontal/27 gal vertical. I like the idea of the horizontal compressor so it won't ever tip over. These are all oiled and belt driven. THe puma says 2 hp running and 5.5 hp peak, what does this mean?

The 5.5 hp rating is B.S. all that means is the amps it pulls to start the motor.
5.5hp at 120v would = about 32 amps. It's marketing ****.
The 2 hp running is about 13amps at 120v, that will be the "near" true hp.
Here's the formula.
If: amps (A)= 13 and volts (V)=120 then
A X V =1560 watts (W)
1560 watts X .00134 = 2.0904 horsepower
Here's mine , I replaced the combo sw/reg with 3/8" to run the stuff that "you can't run with that compressor"
SD530393.jpg

SD530391.jpg


Chuck
 

Speargun

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Oct 10, 2008
Messages
50
Location
Silver Springs, FL
The last Craftsman "Professional" 6hp 60 gal compressor I bought has been rebuilt 4 times so far. Good thing I paid an extra $140 for the extended 3 year warranty.

Last compressor I buy from Sears.
 
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