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Old 05-27-2015, 07:30 AM   #1
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Air Compressor

What is the best kind of air compressor to purchase to have handy to keep my tires inflated while on trips?
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Old 05-27-2015, 07:38 AM   #2
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I don't know what is the best one, but this one - PORTER-CABLE C2002-WK Oil-Free UMC Pancake Compressor with 13-Piece Accessory Kit - works well for me. Got it from Amazon and it has to problem keeping 110 psi in my front tires.
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Old 05-27-2015, 07:43 AM   #3
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I also carry a Porter-Cable pancake compressor. It will provide 150 psi.
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Old 05-27-2015, 07:50 AM   #4
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X2 on the Porter-Cable pancake compressor. Oilless compressors are loud, but they get the job done.
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Old 05-27-2015, 08:30 AM   #5
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Bobby,

Also take a look at the ViAir unit made for RVs.

You can see it in action on the RVGeeks website.

You searched for Viair - TheRVgeeks

VIAIR Corporation - 400P-RV Automatic Portable Compressor (P/N 40047)
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Old 05-27-2015, 08:35 AM   #6
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I second the ViAir. Had the pancake ones before and they work okay. The ViAir are smaller, lighter, and quieter.
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Old 05-27-2015, 09:12 AM   #7
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I would suggest a unit that runs on 110VAC, and puts out a minimum of 150psi. There are several available at around $100.


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Old 05-27-2015, 09:23 AM   #8
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Quote:
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I second the ViAir. Had the pancake ones before and they work okay. The ViAir are smaller, lighter, and quieter.
X3!
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Old 05-27-2015, 09:33 AM   #9
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OP, what type of MH do you have? Being that we have a diesel pusher, that has air brakes, I have a section of air hose that I can plug into the chassis and with the engine running, I can add air to my tires. While this may not be the 'ideal' way, it works well when we are boon docking.
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Old 05-27-2015, 03:09 PM   #10
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I use the Fini airboss, 1.5hp 135psi weighs 20lbs. Got it at Lowes. 
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Old 05-27-2015, 04:11 PM   #11
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my DP has a air hose connection on the front in the generator area - easy to use for all your airing needs- and I keep my hose bundled there for whenever I may need it

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Old 05-27-2015, 09:09 PM   #12
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I just purchased last week a Porter Cable pancake with PSI of 150 at Lowes on sale for $99.00. Small and light enough to keep in one of the storage compartments and does the job.
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Old 05-27-2015, 10:48 PM   #13
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I just purchased last week a Porter Cable pancake with PSI of 150 at Lowes on sale for $99.00. Small and light enough to keep in one of the storage compartments and does the job.
I bought one too, only I got mine at Menards.
I carry a small 150psi, 12V unit(Viar knockoff @ $59) from Harbor Freight, but it doesn't have any way to use an in-line water separator. The FINI has that ability, but it's 3X as large and 6X heavier.
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Old 05-28-2015, 03:27 PM   #14
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The most important consideration with a compressor is the cut-in pressure, which you won't often find advertised. The pressure they post in big numbers is the cut-off pressure, the pressure where the compressor stops pumping. The cut-in pressure is usually around 30 PSI lower, and is the pressure where the compressor will start pumping again.

You want to make sure the cut-in pressure of any compressor you are looking at is at least 10 or 20 PSI higher than your highest tire pressure. You want that margin so that there is enough pressure to get a reasonable flow rate into the tire. And if the cut-in pressure is not higher than the tire pressure, the tank will drain down and stop filling the tire before the compressor cuts in. You will then have to bleed off tank pressure until the compressor starts, and then quickly put the chuck onto the tire while the compressor is running. You will often have to do this several times to top off a tire. It gets old real fast.

If you can't find the cut-in pressure of a compressor you're considering, look for one that has a max pressure that's at least 50 PSI or so greater than your tire pressure. That's about 30 PSI for the cut-in pressure, and 20 PSI to get enough flow rate.

Quote:
Originally Posted by R2Home View Post
Being that we have a diesel pusher, that has air brakes, I have a section of air hose that I can plug into the chassis and with the engine running, I can add air to my tires. While this may not be the 'ideal' way, it works well when we are boon docking.
I agree that it's not ideal, but if you have a diesel, it's well worth carrying an air hose as it can be handy for an emergency. But I don't like it for general topping off at home, because the cut-in pressure is around 90 PSI, and that's below the pressure of all of my tires.

I went with a 175 PSI two-stage stationary compressor at home, and never have to worry about having enough air. On the road I use the on-board air from the engine -- it's so rare that I need it, that it's not worth carrying a compressor with me, I can put up with the on-board air limitations on the rare occasion I need it on the road.
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