[GregWeld]

Originally Posted by Sieg

Something like this would be a minimum IMO if you plan on using air tools a lot, especially cut-offs, drills, and sanders.

http://www.aircompressorsdirect.com/...ssor/p591.html

This appears to be a decent "budget" choice:
http://www.aircompressorsdirect.com/...ssor/p855.html

My Ingersoll Rand 3.5 hp 20 gallon can't keep up with a 2" disc sander.

Go to the SPECS section on these two compressors ---- HUGE DIFFERENCE!! As in OMG ----- the PUMA will make only 12 CFM at 90psi ---- while the slightly more expensive (okay - it's double... but still cheap IMHO)... will produce 15.9 @ 90psi


If you don't think that makes a difference ------ try doing some work with either one. The PUMA would be running out of air in a matter of minutes -- and then the compressor would kick on and it never would catch up.... while the Quincy would produce enough air to actually run the tool -- and kick on once in awhile. It (Quincy) would run far cooler producing less moisture in the air as well.


NOW HERE'S THE IMPORTANT PART OF THIS CFM USED RATING -------- most TOOL CFM ratings are based on 25% DUTY CYCLE --- meaning that you're only going to run the tool for 15 SECONDS out of every MINUTE....


OKAY --- That's a complete BS number right. 15 seconds of every minute.... so you can triple or quadruple that actual numbers that are used for CFM RATINGS. Don't think for one minute (or use your brain for 25% duty cycle) that you can run an air die grinder on 10 cfm at 90psi.... it takes WAY more air than that to actually do a job. Just sayin..... don't be fooled by these completely made up numbers.