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Portable Air Tank - Question on usage #4454236
07/09/17 12:21 PM
07/09/17 12:21 PM
Joined: Aug 2008
Posts: 3,172
USA
Reddy45 Offline OP
Reddy45  Offline OP
Joined: Aug 2008
Posts: 3,172
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?


Re: Portable Air Tank - Question on usage [Re: Reddy45] #4454240
07/09/17 12:32 PM
07/09/17 12:32 PM
Joined: Dec 2014
Posts: 1,671
'murica
Ethan1 Offline
Ethan1  Offline
Joined: Dec 2014
Posts: 1,671
'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.

Re: Portable Air Tank - Question on usage [Re: Reddy45] #4454260
07/09/17 01:04 PM
07/09/17 01:04 PM
Joined: Dec 2003
Posts: 9,810
Florida, Cape Coral
Eddie Online sleepy
Eddie  Online Sleepy
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Posts: 9,810
Florida, Cape Coral
I did that all the time. Ed


CX5 Touring 2.5L :-)
Re: Portable Air Tank - Question on usage [Re: Reddy45] #4454284
07/09/17 01:38 PM
07/09/17 01:38 PM
Joined: Mar 2004
Posts: 20,764
Upstate NY
Donald Online content
Donald  Online Content
Joined: Mar 2004
Posts: 20,764
Upstate NY
Yes but make the tank 60 gallons rather than 5.

Depends on what your definition of "large volume" is.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Portable Air Tank - Question on usage [Re: Reddy45] #4454294
07/09/17 01:48 PM
07/09/17 01:48 PM
Joined: Jan 2009
Posts: 2,379
wi
dave123 Offline
dave123  Offline
Joined: Jan 2009
Posts: 2,379
wi
Large volume of air to do what???

Re: Portable Air Tank - Question on usage [Re: Reddy45] #4454315
07/09/17 02:15 PM
07/09/17 02:15 PM
Joined: Dec 2016
Posts: 6,270
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,270
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!


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Portable Air Tank - Question on usage [Re: Reddy45] #4454336
07/09/17 02:37 PM
07/09/17 02:37 PM
Joined: Jun 2003
Posts: 17,378
Deplorable in apple valley, ca
Chris142 Online content
Chris142  Online Content
Joined: Jun 2003
Posts: 17,378
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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Re: Portable Air Tank - Question on usage [Re: Reddy45] #4454355
07/09/17 03:02 PM
07/09/17 03:02 PM
Joined: May 2016
Posts: 717
Canada
i_hate_autofraud Offline
i_hate_autofraud  Offline
Joined: May 2016
Posts: 717
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.

Re: Portable Air Tank - Question on usage [Re: Reddy45] #4454357
07/09/17 03:04 PM
07/09/17 03:04 PM
Joined: May 2016
Posts: 717
Canada
i_hate_autofraud Offline
i_hate_autofraud  Offline
Joined: May 2016
Posts: 717
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!

Re: Portable Air Tank - Question on usage [Re: Reddy45] #4454394
07/09/17 03:38 PM
07/09/17 03:38 PM
Joined: Dec 2016
Posts: 6,270
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,270
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."
Re: Portable Air Tank - Question on usage [Re: Reddy45] #4454414
07/09/17 03:55 PM
07/09/17 03:55 PM
Joined: Aug 2008
Posts: 3,172
USA
Reddy45 Offline OP
Reddy45  Offline OP
Joined: Aug 2008
Posts: 3,172
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.

Re: Portable Air Tank - Question on usage [Re: Reddy45] #4454433
07/09/17 04:17 PM
07/09/17 04:17 PM
Joined: Jun 2003
Posts: 33,111
ME
eljefino Offline
eljefino  Offline
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Posts: 33,111
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.

Re: Portable Air Tank - Question on usage [Re: eljefino] #4454656
07/09/17 08:23 PM
07/09/17 08:23 PM
Joined: Aug 2003
Posts: 12,908
NE,Ohio
Rand Offline
Rand  Offline
Joined: Aug 2003
Posts: 12,908
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]


2019 Jeep Cherokee Trailhawk 2.0T
Re: Portable Air Tank - Question on usage [Re: Reddy45] #4454893
07/10/17 02:35 AM
07/10/17 02:35 AM
Joined: Jul 2003
Posts: 4,755
New Zealand
Silk Offline
Silk  Offline
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Posts: 4,755
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.




1987 BMW R65 - Penrite V Twin 20/50
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