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Old June 20th 07, 07:53 AM posted to rec.aviation.homebuilt,rec.aviation.owning
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Default Air Compressor Horsepower/Wattage/Amperage


RST Engineering wrote:


To hell with inflated horsepower claims, airplane engines, and the like.
Simple question. One horse compressor motor. How much peak
amperage/wattage to start it zero PSI in the tank, how much to keep it
running to max PSI of (say) 100 psi, and how much to REstart it when the
pressure drops to 80 psi.



Jim: I'll check at first light and give you actual model numbers for
my old oilless.
I used to run it off a 4500watt/5000 watt surge genset until one of
the brushes in
genset let go and the compressor motor burned up while on a trip. The
compressor
would start under any load condition in the tank on the genset with
one exception,
and that was with over 100 psig in the tank and ambient air temp over
110 degrees
F. and having been used nearly continously for over an hour. At that
point, I
would have to bleed the tank pressure to under 100 psig toi get it to
start.

Craig C.