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#4454236 - 07/09/17 12:21 PM Portable Air Tank - Question on usage
Reddy45 Offline


Registered: 08/15/08
Posts: 2959
Loc: USA
I have a small compressor like the following pic. The specs state that it has a 100% duty cycle.



Occasionally I need a large volume of compressed air.

Can I buy a portable tank like this and fill it up with that small compressor?


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#4454240 - 07/09/17 12:32 PM Re: Portable Air Tank - Question on usage [Re: Reddy45]
Ethan1 Offline


Registered: 12/29/14
Posts: 1632
Loc: 'murica
Yes, a compressor is the only way to fill an air tank. You need the air chuck that's used to fill a car's tires.

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#4454260 - 07/09/17 01:04 PM Re: Portable Air Tank - Question on usage [Re: Reddy45]
Eddie Offline


Registered: 12/07/03
Posts: 9558
Loc: Florida, Cape Coral
I did that all the time. Ed
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#4454284 - 07/09/17 01:38 PM Re: Portable Air Tank - Question on usage [Re: Reddy45]
Donald Offline


Registered: 03/21/04
Posts: 20446
Loc: Upstate NY
Yes but make the tank 60 gallons rather than 5.

Depends on what your definition of "large volume" is.
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#4454294 - 07/09/17 01:48 PM Re: Portable Air Tank - Question on usage [Re: Reddy45]
dave123 Offline


Registered: 01/13/09
Posts: 2313
Loc: wi
Large volume of air to do what???

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#4454315 - 07/09/17 02:15 PM Re: Portable Air Tank - Question on usage [Re: Reddy45]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
You can, but you'll wear out the little air compressor faster because it's being used more. It might be slow.

But I definitely see the need for portable tanks, I have three of them!
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#4454336 - 07/09/17 02:37 PM Re: Portable Air Tank - Question on usage [Re: Reddy45]
Chris142 Offline


Registered: 06/05/03
Posts: 16811
Loc: Deplorable in apple valley, ca
I have an air tank simmiliar to that one. It will pump up a couple of low tires.

In reality you should get a real compressor. 20 gallon minimum.
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#4454355 - 07/09/17 03:02 PM Re: Portable Air Tank - Question on usage [Re: Reddy45]
i_hate_autofraud Offline


Registered: 05/19/16
Posts: 704
Loc: Canada


A portable air tank like the 5 gal is OK, but I'll often use a 10 gal, enough air to top up all tires.

These tanks are only effective at transferring air when they are well above the tire you're filling.

A tank depleted to 40PSI is very slow when trying to get a 25PSI tire up to 32PSI, etc.

Surprise: The large fitting on the tank typically has an ID for air that's only
i/8" !!! So it fills and discharges air way slower even under ideal conditions!

If found that out a few years ago where I ripped off the old fittings and fitted a T fitting
and 'M type' QCs so I can put a storage tank it inline with my air line and close to my impact
wrench for suspension work, ie, to make sure there's lots of air when cranking hard on the wrench.

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#4454357 - 07/09/17 03:04 PM Re: Portable Air Tank - Question on usage [Re: Reddy45]
i_hate_autofraud Offline


Registered: 05/19/16
Posts: 704
Loc: Canada


BTW, I'd rather have a bigger compressor + motor on a smaller tank for portability
then stores that sell smallish compressors/motors on 60 gal tanks to fake out some customers!

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#4454394 - 07/09/17 03:38 PM Re: Portable Air Tank - Question on usage [Re: Reddy45]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
The 8 gallon compressor harbor freight sells with a coupon for $99 is an excellent unit
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4454414 - 07/09/17 03:55 PM Re: Portable Air Tank - Question on usage [Re: Reddy45]
Reddy45 Offline


Registered: 08/15/08
Posts: 2959
Loc: USA
Thank you for the comments.

I was hoping to use the portable tank to blow out the sprinkler system later this year, but after watching some videos on the topic, I think I just need to buy a proper upright 25 gallon compressor.

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#4454433 - 07/09/17 04:17 PM Re: Portable Air Tank - Question on usage [Re: Reddy45]
eljefino Offline


Registered: 06/15/03
Posts: 32628
Loc: ME
It also depends on your wiring. If you have a typical 15 amp, 120 volt plug most compressors from $100 on up will make the same amount of air over the same amount of time. Some just have bigger tanks. smile

Max continuous HP from a 120v/ 15 amp outlet is a little under 2, so anything "rated" higher is a lie.

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#4454656 - 07/09/17 08:23 PM Re: Portable Air Tank - Question on usage [Re: eljefino]
Rand Offline


Registered: 08/20/03
Posts: 12638
Loc: NE,Ohio
Originally Posted By: eljefino


Max continuous HP from a 120v/ 15 amp outlet is a little under 2, so anything "rated" higher is a lie.


Right but they all lie.

115v will get you around 7.5cfm max. in most cases.. you need 230v to get a real compressor.

Even a cheap husky 230v will do [email protected]
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#4454893 - 07/10/17 02:35 AM Re: Portable Air Tank - Question on usage [Re: Reddy45]
Silk Online   content


Registered: 07/26/03
Posts: 4547
Loc: New Zealand
I use a small truck air tank...even has a nice handle. I used to take it when I was trials riding, for pressure adjustments and the odd puncture. A bigger tank makes more work for a small compressor to fill, and in use may never shut off.


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