Posted by Drew M. on Wednesday, July 27, 2005 at 9:21AM :
In Reply to: You can do it with a 2 stage 5hp and a big tank... posted by gtk on Tuesday, July 26, 2005 at 0:36AM :
Yes, but your Champion 5hp is a REAL 22-25amp motor at 220 volts while the Sears 5-6hp is under 15 amps at 110volts (7.5 amps at 220 volts). The Champion's spec's are accurate. I had a 5hp 30gal Sears vertical oiless compressor. It was noisy junk. I upgraded to a 3hp 1750 rpm motor(15 amps/220 volt)and a "v" -speedaire pump - much more air and very little noise.
For comparision purposes:at 220 volts, ~4.5 amps = 1hp. Many hobby motors are overrated for hp - although that seems to be improving. Focus on CFM at 90/100psi for comparision purposes.
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