Re: Running 2 Air compressors to paint Gun
[Re: Kern Dog]
#690861
05/07/10 08:04 AM
05/07/10 08:04 AM
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Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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Quote:
A smart paint supply store manager told me, and I have found this to be true, is that what you need is a compressor that is capable of maintaining a minimum of 20 PSI at the gun for 2 1/2 minutes. She, (Thats right... A Woman!) said that this represents the average amount of time it takes for a full sweep... Meaning a full pass on every panel of the car. If your 5 Horse compressor works properly and has an upper PSI limit of at least 100 lbs, you should do fine. You can test yourself, as long as you have a pressure regulator on the gun. Run it wide open for 3 minutes and if you stay at or above 20 PSI...Goodbye MAACO ! 
So your gonna wait for the compressor to recover after each Panel.... Good Luck with that... Can you say dry blend...
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Re: Running 2 Air compressors to paint Gun
[Re: 1_WILD_RT]
#690862
05/07/10 08:08 AM
05/07/10 08:08 AM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Quote:
A smart paint supply store manager told me, and I have found this to be true, is that what you need is a compressor that is capable of maintaining a minimum of 20 PSI at the gun for 2 1/2 minutes. She, (Thats right... A Woman!) said that this represents the average amount of time it takes for a full sweep... Meaning a full pass on every panel of the car. If your 5 Horse compressor works properly and has an upper PSI limit of at least 100 lbs, you should do fine. You can test yourself, as long as you have a pressure regulator on the gun. Run it wide open for 3 minutes and if you stay at or above 20 PSI...Goodbye MAACO !
So your gonna wait for the compressor to recover after each Panel.... Good Luck with that... Can you say dry blend...
Yea after rereading the OP post, I don't think 2 20 gal compressors are gonna do the job. I set my gun at around 40 psi so I don't know what good 20 psi would do. My 5hp 2 stage 80 gal compressor runs almost non stop when I paint.
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Re: Running 2 Air compressors to paint Gun
[Re: Challenger 1]
#690864
05/14/10 08:54 PM
05/14/10 08:54 PM
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Joined: Jan 2003
Posts: 5,912
Athens, Greece
Pyper70
master
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master
Joined: Jan 2003
Posts: 5,912
Athens, Greece
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Quote:
Quote:
Quote:
A smart paint supply store manager told me, and I have found this to be true, is that what you need is a compressor that is capable of maintaining a minimum of 20 PSI at the gun for 2 1/2 minutes. She, (Thats right... A Woman!) said that this represents the average amount of time it takes for a full sweep... Meaning a full pass on every panel of the car. If your 5 Horse compressor works properly and has an upper PSI limit of at least 100 lbs, you should do fine. You can test yourself, as long as you have a pressure regulator on the gun. Run it wide open for 3 minutes and if you stay at or above 20 PSI...Goodbye MAACO !
So your gonna wait for the compressor to recover after each Panel.... Good Luck with that... Can you say dry blend...
Yea after rereading the OP post, I don't think 2 20 gal compressors are gonna do the job. I set my gun at around 40 psi so I don't know what good 20 psi would do. My 5hp 2 stage 80 gal compressor runs almost non stop when I paint.
My HVLP Devilbiss only need 18-22lbs at the gun to operate normally. I assume you are using a siphon feed for the 40lbs?
Other thing you can do is run both air compressors with lines to the car. Paint one body panel with one compressor, when the volume runs down, switch compressors. You will always have one with air ready to go and there wont be paint drying on your car between panels
Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s
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Re: Running 2 Air compressors to paint Gun
[Re: Kern Dog]
#690865
05/14/10 09:13 PM
05/14/10 09:13 PM
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Joined: Nov 2007
Posts: 21,847
Kirkland, Washington
Pacnorthcuda
Too Many Posts
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Too Many Posts
Joined: Nov 2007
Posts: 21,847
Kirkland, Washington
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Quote:
A smart paint supply store manager told me, and I have found this to be true, is that what you need is a compressor that is capable of maintaining a minimum of 20 PSI at the gun for 2 1/2 minutes. She, (Thats right... A Woman!) said that this represents the average amount of time it takes for a full sweep... Meaning a full pass on every panel of the car. If your 5 Horse compressor works properly and has an upper PSI limit of at least 100 lbs, you should do fine. You can test yourself, as long as you have a pressure regulator on the gun. Run it wide open for 3 minutes and if you stay at or above 20 PSI...Goodbye MAACO !
With your 20psi I will assume your talking about HVLP, cuz conventional usually requires 40-50psi. OK. The 2.5 minutes per panel might be fine if your ONLY doing panels, bit if you're spraying a whole car that not how it works--you don't/can't start/stop at each panel. You have maintain a wet-edge, which requires MUCH more time than 2.5 minutes.
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