In response to a post by BobH...

A data point...

My compressor pumps my 80 gallon tank, plus the compressed air hoses
(150 ft plus dryer), from 0 PSI to 125 PSI, in exactly four minutes.

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Ignoramus877 wrote:
In response to a post by BobH...

A data point...

My compressor pumps my 80 gallon tank, plus the compressed air hoses
(150 ft plus dryer), from 0 PSI to 125 PSI, in exactly four minutes.

Thanks,
BobH

On Mon, 09 Mar 2009 20:55:44 -0500, Ignoramus877
wrote:

In response to a post by BobH...

A data point...

My compressor pumps my 80 gallon tank, plus the compressed air hoses
(150 ft plus dryer), from 0 PSI to 125 PSI, in exactly four minutes.


How do you pull that initial vacuum?

And why?

Gunner

"Human nature is bad. Good is a human product*
A warped piece of wood must be steamed and forced
before it is made straight; a metal blade must be put to the whetstone
before it becomes sharp. Since the nature of people is bad, to become corrected
they must be taught by teachers and to be orderly they must acquire ritual
and moral principles."
—Sun Tzu
*

My compressor pumps my 80 gallon tank, plus the compressed air hoses
(150 ft plus dryer), from 0 PSI to 125 PSI, in exactly four minutes.

How do you pull that initial vacuum?

And why?

I suspect he means PSIG. Some gages bother to mention it, some
don't...
--Glenn Lyford

On Tue, 10 Mar 2009 05:34:04 -0700 (PDT), Glenn Lyford
wrote:

My compressor pumps my 80 gallon tank, plus the compressed air hoses
(150 ft plus dryer), from 0 PSI to 125 PSI, in exactly four minutes.

How do you pull that initial vacuum?

And why?

I suspect he means PSIG. Some gages bother to mention it, some
don't...
--Glenn Lyford


But doesnt he start off with 14.6 +/- PSIG before he turns it on?

G

Gunner

"Human nature is bad. Good is a human product*
A warped piece of wood must be steamed and forced
before it is made straight; a metal blade must be put to the whetstone
before it becomes sharp. Since the nature of people is bad, to become corrected
they must be taught by teachers and to be orderly they must acquire ritual
and moral principles."
—Sun Tzu
*

On Tue, 10 Mar 2009 11:18:58 -0700, Gunner Asch
wrote:

On Tue, 10 Mar 2009 05:34:04 -0700 (PDT), Glenn Lyford
wrote:

My compressor pumps my 80 gallon tank, plus the compressed air hoses
(150 ft plus dryer), from 0 PSI to 125 PSI, in exactly four minutes.

How do you pull that initial vacuum?

And why?

I suspect he means PSIG. Some gages bother to mention it, some
don't...
--Glenn Lyford


But doesnt he start off with 14.6 +/- PSIG before he turns it on?

G

Gunner

OK, given the G, we'll assume a certain amount of chain yanking. He
should have 14.7 PSIA or so.

Pete Keillor

On 2009-03-10, Gunner Asch wrote:
On Tue, 10 Mar 2009 05:34:04 -0700 (PDT), Glenn Lyford
wrote:

My compressor pumps my 80 gallon tank, plus the compressed air hoses
(150 ft plus dryer), from 0 PSI to 125 PSI, in exactly four minutes.

How do you pull that initial vacuum?

And why?

I suspect he means PSIG. Some gages bother to mention it, some
don't...
--Glenn Lyford


But doesnt he start off with 14.6 +/- PSIG before he turns it on?

What does your pressure gauge show when your compressor tank is open,
0 or 14.7?

i

"Ignoramus26567" wrote in message
...
On 2009-03-10, Gunner Asch wrote:
On Tue, 10 Mar 2009 05:34:04 -0700 (PDT), Glenn Lyford
wrote:

My compressor pumps my 80 gallon tank, plus the compressed air hoses
(150 ft plus dryer), from 0 PSI to 125 PSI, in exactly four minutes.

How do you pull that initial vacuum?

And why?

I suspect he means PSIG. Some gages bother to mention it, some
don't...
--Glenn Lyford


But doesnt he start off with 14.6 +/- PSIG before he turns it on?

What does your pressure gauge show when your compressor tank is open,
0 or 14.7?

i

PSIG.

Ignoramus26567 writes:

What does your pressure gauge show when your compressor tank is open,
0 or 14.7?

How much pressure does an open tank hold, if you say atmospheric pressure
is zero?

BobH wrote:
Ignoramus877 wrote:
In response to a post by BobH...

A data point...

My compressor pumps my 80 gallon tank, plus the compressed air hoses
(150 ft plus dryer), from 0 PSI to 125 PSI, in exactly four minutes.

Thanks,
BobH

Quincy QR-25 Model 390, 15hp motor, tank opened until guage read 0.
200 gallon tank. Exit valve closed, so this is only the tank.
20psi = 26s
40psi = 60s
60psi = 1:34
80psi = 2:10
100psi = 2:47
120psi = 3:24
125psi = 3:34

Gunner Asch wrote:

On Tue, 10 Mar 2009 05:34:04 -0700 (PDT), Glenn Lyford
wrote:

My compressor pumps my 80 gallon tank, plus the compressed air hoses
(150 ft plus dryer), from 0 PSI to 125 PSI, in exactly four minutes.

How do you pull that initial vacuum?

And why?

I suspect he means PSIG. Some gages bother to mention it, some
don't...
--Glenn Lyford

But doesnt he start off with 14.6 +/- PSIG before he turns it on?

No, he starts at 0 PSIG, which is around 14.6 PSIA. His 125 PSIG also
equates to about 139.6 PSIA.

Pete C. wrote:
Gunner Asch wrote:
On Tue, 10 Mar 2009 05:34:04 -0700 (PDT), Glenn Lyford
wrote:

My compressor pumps my 80 gallon tank, plus the compressed air hoses
(150 ft plus dryer), from 0 PSI to 125 PSI, in exactly four minutes.
How do you pull that initial vacuum?

And why?
I suspect he means PSIG. Some gages bother to mention it, some
don't...
--Glenn Lyford
But doesnt he start off with 14.6 +/- PSIG before he turns it on?

No, he starts at 0 PSIG, which is around 14.6 PSIA. His 125 PSIG also
equates to about 139.6 PSIA.

Gunner, stop teasing these guys! G

Bob

On Wed, 11 Mar 2009 12:28:19 -0400, Bob Engelhardt
wrote:

Pete C. wrote:
Gunner Asch wrote:
On Tue, 10 Mar 2009 05:34:04 -0700 (PDT), Glenn Lyford
wrote:

My compressor pumps my 80 gallon tank, plus the compressed air hoses
(150 ft plus dryer), from 0 PSI to 125 PSI, in exactly four minutes.
How do you pull that initial vacuum?

And why?
I suspect he means PSIG. Some gages bother to mention it, some
don't...
--Glenn Lyford
But doesnt he start off with 14.6 +/- PSIG before he turns it on?

No, he starts at 0 PSIG, which is around 14.6 PSIA. His 125 PSIG also
equates to about 139.6 PSIA.

Gunner, stop teasing these guys! G

Bob


G Charector flaw of mine...G

Gunner

"Human nature is bad. Good is a human product*
A warped piece of wood must be steamed and forced
before it is made straight; a metal blade must be put to the whetstone
before it becomes sharp. Since the nature of people is bad, to become corrected
they must be taught by teachers and to be orderly they must acquire ritual
and moral principles."
—Sun Tzu
*

Todd Rich wrote:
(snip)
Quincy QR-25 Model 390, 15hp motor, tank opened until guage read 0.
200 gallon tank. Exit valve closed, so this is only the tank.
20psi = 26s
40psi = 60s
60psi = 1:34
80psi = 2:10
100psi = 2:47
120psi = 3:24
125psi = 3:34

What? I didn't even get a "You suck!" out of this?

you suck. I am very envious. Not that I could use that kind of CFM.

i

On 2009-03-12, Todd Rich wrote:
Todd Rich wrote:
(snip)
Quincy QR-25 Model 390, 15hp motor, tank opened until guage read 0.
200 gallon tank. Exit valve closed, so this is only the tank.
20psi = 26s
40psi = 60s
60psi = 1:34
80psi = 2:10
100psi = 2:47
120psi = 3:24
125psi = 3:34

What? I didn't even get a "You suck!" out of this?

--
Due to extreme spam originating from Google Groups, and their inattention
to spammers, I and many others block all articles originating
from Google Groups. If you want your postings to be seen by
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"Richard J Kinch" wrote:
Ignoramus26567 writes:

What does your pressure gauge show when your compressor tank is open,
0 or 14.7?

How much pressure does an open tank hold, if you say atmospheric pressure
is zero?

Zero, of course; pressure is measured as a differential, just like voltage.

Now, if you take that empty tank at zero pressure, cap it up, and fling it
into space, *then* it will be at 14.7 PSI.

Jon

On 2009-03-13, Jon Danniken wrote:
Now, if you take that empty tank at zero pressure, cap it up, and fling it
into space, *then* it will be at 14.7 PSI.

Then you can start the compressor in "space" and see how quickly it
will pump up the tank.

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Due to extreme spam originating from Google Groups, and their inattention
to spammers, I and many others block all articles originating
from Google Groups. If you want your postings to be seen by
more readers you will need to find a different means of
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Jon Danniken writes:

How much pressure does an open tank hold, if you say atmospheric
pressure is zero?

Zero, of course;

No, it still holds 1 atm. Saying it is zero doesn't make it so.

"Pete C." writes:


I suspect he means PSIG. Some gages bother to mention it, some
don't...
--Glenn Lyford

But doesnt he start off with 14.6 +/- PSIG before he turns it on?

No, he starts at 0 PSIG, which is around 14.6 PSIA. His 125 PSIG also
equates to about 139.6 PSIA.

What's that in hectopascals?

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