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At 02:59 PM 8/10/2021, Mark Andy wrote:
>If I were buying a compressor today and the air requirements were modest, I
>would be looking HARD at one of the super quiet compressor types that are
>available now.
Again thanks to everyone. Mark mentions the harbor freight compressor:
<https://www.harborfreight.com/26-gallon-175-psi-ultra-quiet-vertical-shopauto-air-compressor-57336.html>https://www.harborfreight.com/26-gallon-175-psi-ultra-quiet-vertical-shopauto-air-compressor-57336.html
Looking at it's basic specs, it is only rated at 4.5 SCFM @
90PSI. My compressor
is rated at 9.3 SCFM @ 90 PSI. I've have used my compressor for everything
from painting cars, sanding, impact hammers, die grinders, and both
media blasting
cabinets & pressure blasting. And I'm always running out of air and
stopping to let
the compressor catch up.
So that brings up more questions:
1. What really controls how much a comperssor can generate, ie. SCFM?
2. What controls how long your compressor can supply air before
having to start
the motor to refill the tank? I realize that some air tools use a
LOT more air, but
I'm speaking for any given tool, not compairing something like spray
painting to
undoing 5 lugnuts on a car.
3. Why is a bigger tank better? After the compressor's pressure
switch kicks on,
doesn't it take longer for the compressor to reach the shut off
pressure with a
larger tank?
4. How can a 1.7 hp compressor deliver a peek of 175 psi and a
regulated 155 psi
when my 5 hp can only charge to 125 psi. I realize part of that is due to the
pressure switch, mine is 110 on - 125 off, but really. Can I put a
pressure switch in mine and 175 psi. I don't really think so. Is
this more advertising hype like
when they were rating compressors at their starting current vs
running current for
hp? They could get 7hp of of a 110V motor - NOT!
John
John T. Blair WA4OHZ email: jblair1948@cox.net
Va. Beach, Va Phone: (757) 495-8229
48 TR1800 48 #4 Midget 65 Morgan 4/4 Series V (B1106)
75 Bricklin SV1 (#0887) 77 Spitfire 71 Saab Sonett III
65 Rambler Classic
Morgan: www.team.net/morgan
Bricklin: www.bricklin.org
If you can read this - Thank a teacher!
If you are reading it in English - Thank a Vet!!
From Dennis Prager - The American Trilogy:
e pluribus Unum, "from many, one."
In God We Trust
Liberty - the power of choosing, thinking, and acting for
oneself; freedom from control or restriction
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<font size=3>At 02:59 PM 8/10/2021, Mark Andy wrote:<br><br>
>If I were buying a compressor today and the air requirements were
modest, I<br>
>would be looking HARD at one of the super quiet compressor types that
are <br>
>available now.<br><br>
Again thanks to everyone. Mark mentions the harbor freight
compressor:<br><br>
<a
href="https://www.harborfreight.com/26-gallon-175-psi-ultra-quiet-vertical-shopauto-air-compressor-57336.html";>
https://www.harborfreight.com/26-gallon-175-psi-ultra-quiet-vertical-shopauto-air-compressor-57336.html</a>
<br><br>
Looking at it's basic specs, it is only rated at 4.5 SCFM @
90PSI. My compressor<br>
is rated at 9.3 SCFM @ 90 PSI. I've have used my compressor
for everything <br>
from painting cars, sanding, impact hammers, die grinders, and both media
blasting <br>
cabinets & pressure blasting. And I'm always running out of air
and stopping to let<br>
the compressor catch up.<br><br>
So that brings up more questions:<br><br>
1. What really controls how much a comperssor can generate, ie.
SCFM?<br><br>
2. What controls how long your compressor can supply air before having to
start <br>
the motor to refill the tank? I realize that some air tools use a
LOT more air, but<br>
I'm speaking for any given tool, not compairing something like spray
painting to <br>
undoing 5 lugnuts on a car. <br><br>
3. Why is a bigger tank better? After the compressor's pressure
switch kicks on, <br>
doesn't it take longer for the compressor to reach the shut off pressure
with a <br>
larger tank?<br><br>
4. How can a 1.7 hp compressor deliver a peek of 175 psi and a regulated
155 psi <br>
when my 5 hp can only charge to 125 psi. I realize part of that is
due to the <br>
pressure switch, mine is 110 on - 125 off, but really. Can I put a
pressure switch in mine and 175 psi. I don't really think
so. Is this more advertising hype like <br>
when they were rating compressors at their starting current vs running
current for <br>
hp? They could get 7hp of of a 110V motor - NOT!<br><br>
John<br><br>
</font><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2">
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<br>
<div>John T. Blair WA4OHZ email:
jblair1948@cox.net</div>
<div>Va. Beach,
Va
Phone: (757) 495-8229</div>
<br>
<div> 48
TR1800 48 #4 Midget 65 Morgan 4/4
Series V (B1106)</div>
<div> 75 Bricklin SV1 (#0887)
77 Spitfire 71 Saab Sonett III</div>
<div>
65 Rambler Classic</div>
<br>
<div>Morgan:
<a href="http://www.team.net/morgan"; EUDORA=AUTOURL>
www.team.net/morgan</a></div>
<div>Bricklin:
<a href="http://www.bricklin.org/"; EUDORA=AUTOURL>www.bricklin.org</a>
</div>
<br>
<div>If you can read
this
- Thank a teacher!</div>
<div>If you are reading it in English - Thank a Vet!!</div>
<br>
<div> From Dennis Prager - The American Trilogy:</div>
<div> e pluribus Unum, "from many,
one."</div>
<div> In God We Trust</div>
<div> Liberty - the power of
choosing, thinking, and acting for </div>
<div>
oneself; freedom from control or
restriction </div>
<br>
<br>
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