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Why shouldnt i buy a modern ir air compressor?

Emerson motor gave up after a year on a friends ir everything else has been fine:
 
My emerson motor on my 5hp IR is still running good...I use mine for blasting so it's running pretty continuously for hours at a time quite a bit.
 
Ranked in order if quality I think

GreenValley Compressor LLC - Curtis 5 HP Industrial Air Compressor

GreenValley Compressor LLC - Curtis 5 HP Industrial Air Compressor
www.greenvalleycompressor.com www.greenvalleycompressor.com

GreenValley Compressor LLC - Champion 5 HP Air Compressor VR5-8

GreenValley Compressor LLC - Champion 5 HP Air Compressor VR5-8
www.greenvalleycompressor.com www.greenvalleycompressor.com

GreenValley Compressor LLC - Champion 5V80E 5 HP Air Compressor

GreenValley Compressor LLC - Champion 5V80E 5 HP Air Compressor
www.greenvalleycompressor.com www.greenvalleycompressor.com

GreenValley Compressor LLC - Puma TUE5080 5 HP Air Compressor

GreenValley Compressor LLC - Puma TUE5080 5 HP Air Compressor
www.greenvalleycompressor.com www.greenvalleycompressor.com
 
www.eastwood.com

Eastwood Elite QST 30/60 Scroll Air Compressor

Combining whisper-quiet operation with high airflow and 100% duty cycle, the Eastwood Elite QST30/60 compressor delivers unmatched performance without unwanted noise.
www.eastwood.com www.eastwood.com

$1997
12.7 CFM @ 90

1698075752182.jpeg
 
No mag starter IMO is a sign of a "value" compressor.
The 5hp pressure switches don't last and have no protection for overload.

A non mag starter setup usually has a Emerson style motor, No name "nema" rated vs a Baldor etc. motor.
 
CarterKraft said:
No mag starter IMO is a sign of a "value" compressor.
The 5hp pressure switches don't last and have no protection for overload.

A non mag starter setup usually has a Emerson style motor, No name "nema" rated vs a Baldor etc. motor.
Click to expand...

I think most "5 hp" ones without a starter are just playing rating games and are really like 3hp running. The true 5hp ones will have a starter.

Even if you end up with a cheaper compressor without a mag starter, it's worth throwing one on to hopefully help save the motor and switch. I've been running a no name chinese one from ebay on my for over 10 years without any issues.
 
rockota said:
that doesn't look like a 1/2 bad deal at all. Wish it was cheaper, of course.
Click to expand...
I've heard good things about it but they might have been shills, I think the guys were on garage journal, not YT or other video whore site.
12CFM is plenty for normal home shop and 63db is pretty quiet.
 
Not sure how well it aged....
Guys had them fail, got new ones still seemed happy but the failure rate might be too high for my liking or they had a shit batch out the gate.
Maybe do more research on that one.


www.garagejournal.com

The Eastwood QST-30/60

A few weeks back Matt at Eastwood called and asked if I would be interested in testing one of their new scroll compressors in the shop. I've never "reviewed" a compress... To read the rest of this blog entry from The Garage Journal, click here.
www.garagejournal.com www.garagejournal.com
 
CarterKraft said:
I've heard good things about it but they might have been shills, I think the guys were on garage journal, not YT or other video whore site.
12CFM is plenty for normal home shop and 63db is pretty quiet.
Click to expand...
looks like it's more maintenance than it'll be worth for me. GJ folks have a lot of opinions on it.
This looks interesting... but I really, really don't need an 80 gallon tank (nor do I really have room for it).

eatoncompressor.com

5 HP Quiet Air Compressor, Single Phase, 2 Stage, 80 Gallon Tank, Vertical, Industrial

Eaton Compressor carries an impressive line of rotary screw air compressors, including this single phase, 2 stage 5 HP Rotary Screw Air Compressor.
eatoncompressor.com eatoncompressor.com
 
CarterKraft said:
Not sure how well it aged....
Guys had them fail, got new ones still seemed happy but the failure rate might be too high for my liking or they had a shit batch out the gate.
Maybe do more research on that one.


www.garagejournal.com

The Eastwood QST-30/60

A few weeks back Matt at Eastwood called and asked if I would be interested in testing one of their new scroll compressors in the shop. I've never "reviewed" a compress... To read the rest of this blog entry from The Garage Journal, click here.
www.garagejournal.com www.garagejournal.com
Click to expand...

yup. Too much maint for me...
 
rockota said:
looks like it's more maintenance than it'll be worth for me. GJ folks have a lot of opinions on it.
This looks interesting... but I really, really don't need an 80 gallon tank (nor do I really have room for it).

eatoncompressor.com

5 HP Quiet Air Compressor, Single Phase, 2 Stage, 80 Gallon Tank, Vertical, Industrial

Eaton Compressor carries an impressive line of rotary screw air compressors, including this single phase, 2 stage 5 HP Rotary Screw Air Compressor.
eatoncompressor.com eatoncompressor.com
Click to expand...
IMO that type of "quiet" treatment can be done to any compressor. If you only need a 60 then so be it.
There is a thread here about purchasing a intake silencer that the guys really liked, might have been a plasma thread?
 
CarterKraft said:
IMO that type of "quiet" treatment can be done to any compressor. If you only need a 60 then so be it.
There is a thread here about purchasing a intake silencer that the guys really liked, might have been a plasma thread?
Click to expand...
I lied, it was in the shop air plumbing thread
irate4x4.com

Plumbing for shop air?

Hard to beat this unless you are getting the buddy hook-up...
irate4x4.com irate4x4.com
 
CarterKraft said:
IMO that type of "quiet" treatment can be done to any compressor. If you only need a 60 then so be it.
There is a thread here about purchasing a intake silencer that the guys really liked, might have been a plasma thread?
Click to expand...

Yeah, that was me. I'm a big fan. Interesting that their intake silencer linked above is a huge box. The ones from mcmaster are like cherry bomb muffler size, not very big at all, works a treat.
 
bgaidan said:
I think most "5 hp" ones without a starter are just playing rating games and are really like 3hp running. The true 5hp ones will have a starter.

Even if you end up with a cheaper compressor without a mag starter, it's worth throwing one on to hopefully help save the motor and switch. I've been running a no name chinese one from ebay on my for over 10 years without any issues.
Click to expand...
Any links to what you would recommend specificaly?
 
GLTHFJ60 said:
Yeah, that was me. I'm a big fan. Interesting that their intake silencer linked above is a huge box. The ones from mcmaster are like cherry bomb muffler size, not very big at all, works a treat.
Click to expand...
I don't have any pictures but on a buddies attic mounted 5hp Quincy we ran a Donaldson small engine air filter housing with 3" inlet/outlet.
reduced the outlet down to adapt to the 1" NPT at the compressor head and rotated the inlet up so that 3" PVC could be used up through the ceiling and a roof jack with a mushroom cap. This had to be done because the compressor is in a sealed room inside a air conditioned space, with it running it would depressurize the room pretty bad.

It makes me wonder if this accomplish the same thing as the "Silencer" above.
 
CarterKraft said:
Not sure how well it aged....
Guys had them fail, got new ones still seemed happy but the failure rate might be too high for my liking or they had a shit batch out the gate.
Maybe do more research on that one.


www.garagejournal.com

The Eastwood QST-30/60

A few weeks back Matt at Eastwood called and asked if I would be interested in testing one of their new scroll compressors in the shop. I've never "reviewed" a compress... To read the rest of this blog entry from The Garage Journal, click here.
www.garagejournal.com www.garagejournal.com
Click to expand...
They have a version 2.0 that came out a year or two ago that was supposed to fix the issues.

I'd guess for every complaint found online there's dozens working fine.

12cfm isn't awesome though, sandblasting probably wouldn't work that great. The pot style blasters take what 30-40cfm?
 
CarterKraft said:
Single stage, lower PSI = less stored energy, might not matter to you just pointing it out.
Click to expand...

Only ever owned single stage… never wanted to spend the money in the past.

Now these things are 2.5x what they used to be and I’m having convulsions over it.

For what I need this is still probably overkill.
 
rockota said:
price/performance ... this likely will get the nod.

www.homedepot.com

Mega Compressor 60 Gal. 5 HP 150 PSI Electric Upright Air Compressor MP-6560VB - The Home Depot

Finish your sanding and painting work easily with the selection of this Mega Compressor 2-Electric Upright Air Compressor.
www.homedepot.com
Click to expand...

5hp but 20a :confused:

So in reality, it's more like 3hp.


Better off looking for something industrial and used. I doubt that thing holds up very well.

CarterKraft said:
That setup is a LOT of CFM at that price point. The HD add is confusing saying 2 cylinder when it's got three heads?
Specs from site are same as HD though.

Mega Compressor

megacompressor.com megacompressor.com
Click to expand...

Kind of looks like the two side heads are feeding in the the middle one. But at the same time, that is a lot of volume at a lower pressure.

3450 rpm motor means they're just spinning it faster at the cost of longevity.



My true 5hp emglo has a 1725rpm motor and makes over 21cfm @ 175psi. :smokin:
 
bgaidan said:
5hp but 20a :confused:

So in reality, it's more like 3hp.


Better off looking for something industrial and used. I doubt that thing holds up very well.



Kind of looks like the two side heads are feeding in the the middle one. But at the same time, that is a lot of volume at a lower pressure.

3450 rpm motor means they're just spinning it faster at the cost of longevity.



My true 5hp emglo has a 1725rpm motor and makes over 21cfm @ 175psi. :smokin:
Click to expand...

Yeah there is something a little fucky, 20 amps per leg would be right though?
My IR with Baldor has the same RPM.
 
bgaidan said:
5hp but 20a :confused:

So in reality, it's more like 3hp.


Better off looking for something industrial and used. I doubt that thing holds up very well.



Kind of looks like the two side heads are feeding in the the middle one. But at the same time, that is a lot of volume at a lower pressure.

3450 rpm motor means they're just spinning it faster at the cost of longevity.



My true 5hp emglo has a 1725rpm motor and makes over 21cfm @ 175psi. :smokin:
Click to expand...

All the new ones seem to be high rpm’s. Only industrial-ish that I can find are 3-phase and still 2x as much as this one.


This guy seems to flip a bunch of compressors.

nashville.craigslist.org

60 GALLON AIR COMPRESSOR - tools - by owner - sale - craigslist

60 Gallon Air Compressor Four Cylinder Cast Iron Pump 145 PSI....14.6 CFM 220 Volt Motor Runs quiet and is ready to go. This is hooked-up and running in my shop. Professionally serviced and tested....
nashville.craigslist.org
 
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bgaidan said:
Kind of looks like the two side heads are feeding in the the middle one. But at the same time, that is a lot of volume at a lower pressure.
Click to expand...
Most 3 cylinder two-stage compressors are set up that way.
The nicer ones have finned tubes between the heads (to cool the air some), the fancy ones have an intercooler.

Aaron Z
 
rockota said:
bumping rather than starting a new thread... My 15 year old Kobalt finally fell apart. Not going to fix it...

Really don't want to spend $ on a new compressor, but need to for a paint project.

So any additional thoughts on the IR's, Quincy, Puma, etc?
Click to expand...
you still in the area?
got a puma single stage "5hp" (bullshit) one that I'd sell for $300
got it, stuck new head gaskets in it and it's just sat since
 
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