In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i

On Fri, 30 Mar 2012 22:26:41 -0500, Ignoramus25729
wrote:

In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i
42 years in the tire business. If your supply line is more than 50
feet long or has a bunch of turns, you need 3/4 or 1" pipe. You need
10 CFM @ 90 psi.

On Fri, 30 Mar 2012 22:26:41 -0500, Ignoramus25729
wrote:

In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i
One thing I should have added. You can place a small storage tank
inline near the impact to supply enough volume for short bursts.

On 2012-03-31, wrote:
On Fri, 30 Mar 2012 22:26:41 -0500, Ignoramus25729
wrote:

In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i
42 years in the tire business. If your supply line is more than 50
feet long or has a bunch of turns, you need 3/4 or 1" pipe. You need
10 CFM @ 90 psi.

Thanks. Sad, but, just what I was afraid off. I will not redo the
entire air system, but probably will have to redo some part of it.

i

On 2012-03-31, wrote:
On Fri, 30 Mar 2012 22:26:41 -0500, Ignoramus25729
wrote:

In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i
One thing I should have added. You can place a small storage tank
inline near the impact to supply enough volume for short bursts.

Yes, good idea, thanks.

On Fri, 30 Mar 2012 23:12:12 -0500, wrote:

SNIP

One thing I should have added. You can place a small storage tank
inline near the impact to supply enough volume for short bursts.

Hey Iggy,

I was going to suggest what Andy has. I use one of the little 20
gallon "pigs" used to fill tires and such. Works a bit like a
capacitor might if this was electrical. You will need a "T" fitting
so you can feed air from the compressor line to the tank and feed to
the tool at the same time. Just hook it to the air line closest to
where you will run the big tool, and it will help a lot for that kind
of operation. Not so good for constant blowing like spray-painting,
but short burst works good.

Brian Lawson

Ignoramus25729 wrote:
In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i

How far from the compressor to the gun? If less than 10 feet it should
work. Any farther and you're going to need larger pipe. What I did was
simple. The "normal" lines are all 1/2 " steel plumbed off a long run of
1" that acts as a manifold and water drain. Then for the big guns I ran
a dedicated line of 1" out to the spot that the big guns get used.

--
Steve W.

On 2012-03-31, Steve W. wrote:
Ignoramus25729 wrote:
In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i

How far from the compressor to the gun? If less than 10 feet it should
work. Any farther and you're going to need larger pipe. What I did was
simple. The "normal" lines are all 1/2 " steel plumbed off a long run of
1" that acts as a manifold and water drain. Then for the big guns I ran
a dedicated line of 1" out to the spot that the big guns get used.


Much farther. I would say 100 feet distance.

i

On 2012-03-31, Gunner Asch wrote:
On Sat, 31 Mar 2012 00:21:58 -0400, Brian Lawson
wrote:

On Fri, 30 Mar 2012 23:12:12 -0500, wrote:

SNIP

One thing I should have added. You can place a small storage tank
inline near the impact to supply enough volume for short bursts.

Hey Iggy,

I was going to suggest what Andy has. I use one of the little 20
gallon "pigs" used to fill tires and such. Works a bit like a
capacitor might if this was electrical. You will need a "T" fitting
so you can feed air from the compressor line to the tank and feed to
the tool at the same time. Just hook it to the air line closest to
where you will run the big tool, and it will help a lot for that kind
of operation. Not so good for constant blowing like spray-painting,
but short burst works good.

Brian Lawson

Find an 80-120 gallon tank that once had a compressor on it, and stand
it in the corner of your wrenching area, and hook large volume quick
disconnects to it. The tanks are virtually free and will give you
enough volume to do some real work without running out of air.
Ive got (2) such tanks..one 60 gal and one 120 at different locals in
the shop and out in the welding area (plasma cutter) and often use air
tools in both places with no issues.

Gunner



Yes, good idea. I think that I do not even need such volume. 10-20
gallons should do very nicely.

i

On Fri, 30 Mar 2012 23:17:54 -0500, Ignoramus25729
wrote:

On 2012-03-31, wrote:
On Fri, 30 Mar 2012 22:26:41 -0500, Ignoramus25729
wrote:

In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i
42 years in the tire business. If your supply line is more than 50
feet long or has a bunch of turns, you need 3/4 or 1" pipe. You need
10 CFM @ 90 psi.

Thanks. Sad, but, just what I was afraid off. I will not redo the
entire air system, but probably will have to redo some part of it.

For a quick temporary air supply, string another 1/2" air hose and
cable-tie it to the existing run. When you get to the area you want to
run the gun, tie the end of that hose into the new 3/4" pipe. It'll
give you the extra capacity you need.

--
"When the people fear their government, there is tyranny; when the
government fears the people, there is liberty."
Attributed to Thomas Jefferson, but Massah Ed, he doan tink it so.

I'm guessing that heavy duty garden hose is not a wise choice?

Christopher A. Young
Learn more about Jesus
www.lds.org
..

"Larry Jaques" wrote in message
...
Thanks. Sad, but, just what I was afraid off. I will not redo the
entire air system, but probably will have to redo some part of it.

For a quick temporary air supply, string another 1/2" air hose and
cable-tie it to the existing run. When you get to the area you want to
run the gun, tie the end of that hose into the new 3/4" pipe. It'll
give you the extra capacity you need.

--
"When the people fear their government, there is tyranny; when the
government fears the people, there is liberty."
Attributed to Thomas Jefferson, but Massah Ed, he doan tink it so.

On 3/30/2012 9:17 PM, Ignoramus25729 wrote:
On 2012-03-31, wrote:
On Fri, 30 Mar 2012 22:26:41 -0500, Ignoramus25729
wrote:

In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i
42 years in the tire business. If your supply line is more than 50
feet long or has a bunch of turns, you need 3/4 or 1" pipe. You need
10 CFM @ 90 psi.

Thanks. Sad, but, just what I was afraid off. I will not redo the
entire air system, but probably will have to redo some part of it.

i
An impact wrench doesn't run for very long. Pick the location where you
will use the wrench and add another air tank to the line at that
location. Then you can connect the wrench to the tank.

Paul

On 3/30/2012 11:26 PM, Ignoramus25729 wrote:
In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i

We had a 75' run of 1/2" pipe delivering air to the production side of
the plant. We moved the compressors to the production side and ran 1"
pipe on all the branches. That cut our compressor load in half! It
used to be that a single air chisel or 1/2" impact over and above the
normal load would run the system down to 50 psi. Now there's no drop
with two or three air hogs running with the normal load. (I think every
machine uses air.) I remember how hot that 1/2" pipe was, now the pipes
are cool. We also installed a dryer and I couldn't be happier.

On 2012-03-31, Tom Gardner mars@tacks wrote:
On 3/30/2012 11:26 PM, Ignoramus25729 wrote:
In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i

We had a 75' run of 1/2" pipe delivering air to the production side of
the plant. We moved the compressors to the production side and ran 1"
pipe on all the branches. That cut our compressor load in half! It
used to be that a single air chisel or 1/2" impact over and above the
normal load would run the system down to 50 psi. Now there's no drop
with two or three air hogs running with the normal load. (I think every
machine uses air.) I remember how hot that 1/2" pipe was, now the pipes
are cool. We also installed a dryer and I couldn't be happier.

Yes, I have a dryer also, to be plumbed soon.

i

"Ignoramus25729" wrote in message
m...

In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i

What is your system pressure? The air flow and pipe will cause a pressure
drop, if you're running 175 PSI, it will be more CFM at 90 PSI than it is at
175 PSI. So if in your line you get a 50 PSI pressure drop from the pipe,
if you're running 90 PSI system pressure then it's going to be weak, if
you're running 140+ PSI then you would be OK. Another thing to consider is
a surge tank, since the impact isn't continuous you can have a closer tank
to supply pressure to the gun for the surges.

RogerN

On Sat, 31 Mar 2012 18:50:07 -0500, "RogerN"
wrote:

"Ignoramus25729" wrote in message
om...

In a certain surplus deal, I acquired four trailer+pickup truck/loads
of various surplus stuff, mostly electrical.

One item was a CP 1 inch impact wrench, which I really wanted due to
having two trucks and such.

The compressed air system in my building is based on 1/2" NPT pipe,
and I wonder if it is sufficient to run such a big impact wrench. Does
anyone have any relevant experience.

i

What is your system pressure? The air flow and pipe will cause a pressure
drop, if you're running 175 PSI, it will be more CFM at 90 PSI than it is at
175 PSI. So if in your line you get a 50 PSI pressure drop from the pipe,
if you're running 90 PSI system pressure then it's going to be weak, if
you're running 140+ PSI then you would be OK. Another thing to consider is
a surge tank, since the impact isn't continuous you can have a closer tank
to supply pressure to the gun for the surges.

RogerN

Here's a bunch of free Java flow calculators for pressure drop,
volume, pipe diameter, etc., etc.

http://www.pipeflowcalculations.com/

--
Ed Huntress

Consider tanks as large capacitors in an electronic circuit. Charge
them up and they will supply current or air flow at a given pressure
for a long time if enough storage is given.

Each tool that is active is simply a resistive element in parallel.

Martin

On 3/31/2012 5:58 AM, Ignoramus20530 wrote:
On 2012-03-31, Gunner wrote:
On Sat, 31 Mar 2012 00:21:58 -0400, Brian
wrote:

On Fri, 30 Mar 2012 23:12:12 -0500, wrote:

SNIP

One thing I should have added. You can place a small storage tank
inline near the impact to supply enough volume for short bursts.

Hey Iggy,

I was going to suggest what Andy has. I use one of the little 20
gallon "pigs" used to fill tires and such. Works a bit like a
capacitor might if this was electrical. You will need a "T" fitting
so you can feed air from the compressor line to the tank and feed to
the tool at the same time. Just hook it to the air line closest to
where you will run the big tool, and it will help a lot for that kind
of operation. Not so good for constant blowing like spray-painting,
but short burst works good.

Brian Lawson

Find an 80-120 gallon tank that once had a compressor on it, and stand
it in the corner of your wrenching area, and hook large volume quick
disconnects to it. The tanks are virtually free and will give you
enough volume to do some real work without running out of air.
Ive got (2) such tanks..one 60 gal and one 120 at different locals in
the shop and out in the welding area (plasma cutter) and often use air
tools in both places with no issues.

Gunner



Yes, good idea. I think that I do not even need such volume. 10-20
gallons should do very nicely.

i

On 2012-04-01, Martin Eastburn wrote:
Consider tanks as large capacitors in an electronic circuit. Charge
them up and they will supply current or air flow at a given pressure
for a long time if enough storage is given.

Each tool that is active is simply a resistive element in parallel.

That's exactly right, and the air lines are like wires with
resistance, the bigger the "wire", the less resistance.

i

Martin

On 3/31/2012 5:58 AM, Ignoramus20530 wrote:
On 2012-03-31, Gunner wrote:
On Sat, 31 Mar 2012 00:21:58 -0400, Brian
wrote:

On Fri, 30 Mar 2012 23:12:12 -0500, wrote:

SNIP

One thing I should have added. You can place a small storage tank
inline near the impact to supply enough volume for short bursts.

Hey Iggy,

I was going to suggest what Andy has. I use one of the little 20
gallon "pigs" used to fill tires and such. Works a bit like a
capacitor might if this was electrical. You will need a "T" fitting
so you can feed air from the compressor line to the tank and feed to
the tool at the same time. Just hook it to the air line closest to
where you will run the big tool, and it will help a lot for that kind
of operation. Not so good for constant blowing like spray-painting,
but short burst works good.

Brian Lawson

Find an 80-120 gallon tank that once had a compressor on it, and stand
it in the corner of your wrenching area, and hook large volume quick
disconnects to it. The tanks are virtually free and will give you
enough volume to do some real work without running out of air.
Ive got (2) such tanks..one 60 gal and one 120 at different locals in
the shop and out in the welding area (plasma cutter) and often use air
tools in both places with no issues.

Gunner



Yes, good idea. I think that I do not even need such volume. 10-20
gallons should do very nicely.

i

On Sat, 31 Mar 2012 03:12:15 -0700, Gunner Asch
wrote:

different locals in
the shop

How can you have different "locals" in a carport? It must have come
from the same company that built Les Nessman's office.