I have a 5 gallon 8 port tank with viair 480 air compressor. Can I run an air impact wrench with my set up?
Here are specs of an air impact wrench Im wondering if I can run with my set up
Twin Hammer
Bolt Capacity: 1"
Max Torque: 1,000ft/lb
Free Speed: 3,800rpm
Air Consumption: 12 cfm
Air Pressure: 90psi
Air Inlet: 1/4"
Sound Level: 90dba
Thanks
Probably just enough to loosen the bolt / or tighten and then the compressor would have to regain… It would work tho in a desperate situation… I wouldnt use it for rotating my tires…
Impacts require lots of CFM… Usually the bare minimum is a 15-20 gallon tank… Ideal weekend DIY is 26-32 gallon , and if your gonna be using anymore that rotating your own tires, get a 60 -80 gal tank…
btw… that gun consumes 12 cfm… the 480c put out like 1.76 cfm 
You’ll need to use a regulator also to bring the pressure down to 90psi. And like 06z71silvy said it’ll eat up that 5 gal quick. I’d try it just to see how it handled it if it were me. If u do end up trying it post back and let us kno what u think.
Get an oasis compressor and you will be fine…
Thanks Twist!
Is 12 CFM the rating on the gun or the actual consumption under load? The Ingersol-Rand IR2135Ti has very similar specs and is rated at 5 CFM but consumes more because it slows down just a little when operated without a tank from our compressor. The XD3000 delivers 8 CFM from 100 to 200 PSI. With the XD3000 and a 5 gallon tank, you should be able to remove 5 to 6 lug nuts without waiting. By the time you swap tires it’s ready to run the impact again.
I can and regularly do run an Ingersol-Rand Titanium on my air setup haven’t had a problem yet. You just have to watch the air gauge to make sure that you don’t run the pressure too high. Dual 480s seem to charge the tank up real quick in between bolts you’re loosening or tightening.
I dunno, that sound level seems a little too high for ur ears… u may not want to do it… LOL im just bullshitting…
5 gallon tank is def not enough for an impact air gun. I did some research and everything pointed to no for your question. I was actually curious about it myself.
At this point you may as well just get an electric impact wrench. It will do the trick for the tires easily. I use my buddies all the time when I gotta pop my tires off, it can knock a tire off in 10 seconds easily.
Like I said a 5 gallon IS enough. I run an impact gun regularly and have no problems.
smooths out air pressure fluctuations, necessary when spray painting.
allows a compressor to store energy over time, so that a compressor can
handle a load that is above it’s capacity to serve.
there seems to be a huge amount of confusion on air pressure, tank size,
amount of electricity needed to operate compressors, etc.
it’s pretty simple. you are storing energy in a couple of places, and
converting that energy into another form of energy, sound waves,
releasing a lot of energy in a short time, for fun and amusement.
the first place you are storing energy is in a tank, to supply a horn.
nothing that will fit on your vehicle will drive a K5LA without a tank,
and that includes if your vehicle is a train. they run very large air tanks
for the same reason you do.
to supply the air requirements for a large air horn, without a tank,
would require a screw type air compressor with about 150 horsepower
driving it. and weigh more than the car.
i’ve been looking for mobile air sources to be able to use a plasma
cutter in the field.
and run train horns, by the way… 
viair makes a wealth of compressors in the 1-2 CFM range, at the
normal working pressure of 125~150 psi. they are the industry standard
for mobile applications. and they are very well made.
however, if you don’t want to have to put 2~4 of them on a vehicle
to maintain airflow, the only reasonable solution is to go buy an Oasis.
and a 5 gallon tank.
and be done with it.
get a tank that is DOT rated for a working pressure of 175 pound,
put a regulator on it for 125 pounds, and feed the horn off that.
but… but… but… it’s $1,300 bucks, you wail…
yeah, so what? if it’s all about the money, then go buy a plastic horn,
and enjoy yourself.
if you want an honest to god train horn, then you are gonna have to
spend some money to do it right.
now, what runs that oasis compressor is electricity. you need about
150 amps or so… which is about the same energy that would be
required for the 8 viair compressors you would need to equal the
oasis unit.
your alternator is not up to the task, unless you are running an
ambulance with a 400 amp alternator, or you have upgraded to
something with enough oomph.
so, the energy shortfall is going to have to come from the battery.
the secondary energy storage location.
go buy an oddesy. the biggest one you can fit in the space provided.
a big one will cost $300.
quit whining. just go get one. that oasis compressor will need it.
my work van, where all this stuff is going, already has 1600 watts
of stereo in it. deep bass riffs will pull 180 amps, with the engine
running. it’s a diesel, with two oddesy batteries in it. it needs them.
so, to do it right, is gonna cost about $2,000 for the infrastructure
to provide a decent air source, and the electrical to back it up, and
the tank to store it.
that should run anything you can shoehorn into your vehicle.
Great write up but you’re a couple months too late…
sorry… I wasn’t here three months ago…:D. I’m doing the best I can:p
was just reading a number of posts here, and figured I’d throw my nickel’s
worth in here…
I’m an electrical contractor with 33 years experience with stuff electrical,
pneumatic, robotic, etc.
Some basic stuff about voltage drop and such might be helpful… The
connections of the wire have a huge amount to do with the power loss…
for an automotive application, #4 fine stranded cable, with either crimped
or setscrew ferrules, is sufficient for anything we are concerned with here.
my personal preference is crimped or hypressed (swaged) lugs on the wire,
so I can use heat shrink tubing on them. In addition, a fuseable link of
200 amps on the positive terminal is critical. A fully charged oddesy battery
has enough short circuit ampacity to fuse a #4 wire, setting the vehicle on
fire.
one of the overlooked things is the air tubing. Anything big is gonna need
1/2" air line, not just air line with /2" ends on it.
the other thing needed is as few 90 degree fittings between the tank and
horn as possible, each elbow has the same resistance as thirty feet of straightt tubing…
it’s only gonna work as well as the most restrictive portion of the system…
One last thought… air tanks… way back when, people off road racing would make
air bottles out of empty freon tanks. all well and good, if you have them hydrostatically
tested before use and certified. The test and cert will cost as much as a dot tank
bought retail…
A friend of mine died when a homemade tank ruptured 30 years ago…
… just sayin’…