Air compressor

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Subject Author Date
Air compressor stryped 05-13-2008
Posted by Lloyd E. Sponenburgh on May 14, 2008, 3:04 pm
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> On Tue, 13 May 2008 14:06:35 -0700 (PDT), stryped
>
>>I have a Craftsman 30 gallon 5 horsepower 110 volt air compressor. It
>>puts out 6 cfm at 90.
>
> Break there. You have a "5 SEARS Horsepower" compressor. "Peak HP"
> is not the same thing as actual HP - it's what the motor will put out
> when so overloaded it's almost stalled, and right before it burns up.


Yeah... A friend gave me a fairly new Huskey 5HP (110v) job because "It
runs slow".

I peeled off the covers to discover a interestingly built pump (which I
saved for other things) and a motor no larger than my fist. This thing
was wound with only a few dozen turns of about #16 wire, had less metal
in it than a good syncronous clock motor, and had one lobe of the
armature completely shorted.

He had about ten total hours of USE on the compressor... probably 30-40
minutes of run-time.

These things are more junky than cheap vacuum cleaners.

Now... the 26-gallon tank on wheels with a "space saving" stand-up
feature made a dandy portable air tank. I actually have a large enough
porta-air now to get my tractor limping back out of the pasture if I get
a flat. <G>

LLoyd

Posted by Ignoramus12901 on May 14, 2008, 3:09 pm
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5 real horsepower would be at least 46 amps on 115v, power factor and
all, included. I have seen, installed and sold several such motors and
never saw one that was for 115 volts, only for 230.

The Bador website does not list any either.

The venerable Baldor L1408T, which is 3 HP, uses 32 amps. The 5 HP
equivalent of that would be 32*5/3=53 amps.

i

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