Compressors

[bdahlg68]

10 gal, 5.30 CFM at 90 PSI, Maximun pressure - 125 PSI

or

15 gal, 5.0 CFM at 90 PSI, Maximum pressure - 200 PSI

or both just too small?

Not painting cars and not a pro... but my current 2.6CFM at 90 PSI out of 5.5 gal just doesn't cut it. Seems if I double that, that is a big step. Looking to stay pretty quiet and both above units are below 80 dBA.

Does the extra pressure / gallons really help much?

[Sieg]

I'd consider this as a starting point: http://www.aircompressorsdirect.com/...sor/p5515.html

If you're planning on running any air grinders/sanders you need a larger tank. My Ingersoll-Rand 3.3hp 20 gal unit gets it butt kicked by a 2" Harbor Freight sander. I've yet to own a compressor for my garage that's had enough CFM or achieved the stated PSI rating. This or the 18.5 CFM unit is my plan.

Regarding dBA levels, the larger the tank the less they'll be running.

[bdahlg68]

was looking there as well. for a few hundred more, i could step up to 60 gal and 7.1 CFM @ 90PSI....

http://www.aircompressorsdirect.com/...sor/p4786.html

Was hoping to use that few hundred elsewhere, but could go this way too.

[Sieg]

Originally Posted by bdahlg68

was looking there as well. for a few hundred more, i could step up to 60 gal and 7.1 CFM @ 90PSI....

http://www.aircompressorsdirect.com/...sor/p4786.html

Was hoping to use that few hundred elsewhere, but could go this way too.

Have you ever had a car with too much horsepower?

I've been researching this subject too long..........as a hobbiest spend $500 and still be disappointed, spend $800 and be OK, or spend $1000-$1500 and smile everytime you use it for the rest of your life. Sucks doesn't it.

[GregWeld]

Okay -- here's the only way to MATE your compressor with your job requirements...


Go find your air tools you plan to use..... they will be "rated" with a minimum CFM (cubic foot per minute) at a specified PSI....


So if your die grinder needs 3 cfm at 90 psi..... then to buy a compressor with anything less than capable than that -- you'll be waiting for the SOB to make pressure --- and the thing will be running continuously.


My commercial Champion 5 hp with an 80 gal vertical tank will produce about 19 cfm at 125psi --- and will keep up with my hand tools... but anything much less would be a complete PITA.

[bdahlg68]

Originally Posted by GregWeld

Okay -- here's the only way to MATE your compressor with your job requirements...


Go find your air tools you plan to use..... they will be "rated" with a minimum CFM (cubic foot per minute) at a specified PSI....


So if your die grinder needs 3 cfm at 90 psi..... then to buy a compressor with anything less than capable than that -- you'll be waiting for the SOB to make pressure --- and the thing will be running continuously.


My commercial Champion 5 hp with an 80 gal vertical tank will produce about 19 cfm at 125psi --- and will keep up with my hand tools... but anything much less would be a complete PITA.

Yeah, I've looked at that. Highest consumption right now is 5-5.5 CFM @ 90 PSI. Thinking the 7.1 @ 90 is enough especially with 60 gal.