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Open Roads Forum  >  Tech Issues

 > Portable air compressor advice is needed

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tragusa3

upstate south carolina

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Posted: 05/14/19 04:11am Link  |  Quote  |  Print  |  Notify Moderator

I went with the Viair 300P, because my trailer tires (at the time) only needed 65psi. We recently changed to a motorhome that has 22.5" tires and needs 95psi. I thought for sure I'd have to buy the 400RV model. But first, I ran a quick experiment. I dropped a tire down to 60psi and then hooked up the 300P. Expecting a struggle, I was surprised that in about 3 minutes, I was at 105psi. I don't suppose I will be changing air pumps!

I'm sure the duty cycle is better on the 400RV, but I don't expect to ever need to run this more than 5 minutes at a time.


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JimK-NY

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Posted: 05/14/19 05:03am Link  |  Quote  |  Print  |  Notify Moderator

I bought a "Slime" air compressor from Walmart. I think I paid about $35 but prices are now at about $50. The unit is pretty small and light weight but does its job. I have even used it on 19.5 tires to 110 psi.

toedtoes

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Posted: 05/14/19 09:15am Link  |  Quote  |  Print  |  Notify Moderator

2oldman wrote:

toedtoes wrote:


The ryobi looks good until you see the weight. 141lbs is not really something to carry around.
The one linked above is 14, not 141 lb.


If you look at the ryobi with battery on home depot, it says 141 lbs. That's the one I looked at. Since without the battery it's only 14 lbs, I'm guessing that's a typo. So I withdraw my "complaint". [emoticon]

Ryobi plus battery


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toedtoes

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Posted: 05/14/19 09:18am Link  |  Quote  |  Print  |  Notify Moderator

tragusa3 wrote:

I went with the Viair 300P, because my trailer tires (at the time) only needed 65psi. We recently changed to a motorhome that has 22.5" tires and needs 95psi. I thought for sure I'd have to buy the 400RV model. But first, I ran a quick experiment. I dropped a tire down to 60psi and then hooked up the 300P. Expecting a struggle, I was surprised that in about 3 minutes, I was at 105psi. I don't suppose I will be changing air pumps!

I'm sure the duty cycle is better on the 400RV, but I don't expect to ever need to run this more than 5 minutes at a time.


300P and 400P and 400P-RV all have the same duty cycle - 33 percent. The 450P has a 100 percent duty cycle.

time2roll

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Posted: 05/14/19 09:28am Link  |  Quote  |  Print  |  Notify Moderator

Go for the Oasis to get 100% duty cycle at 200 psi.
Only draws 180 amps from the 12v battery.

Oasis XD4000

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DFord

Near St Louis, MO

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Posted: 05/14/19 09:42am Link  |  Quote  |  Print  |  Notify Moderator

Looks like a great heavy duty setup. Must be driven by a starter motor. At 180 amp current draw you're going to need jumper cables to run it. At 65 lbs, it won't be very handy to lug around. It seems like mounting it permanently and using a long hose would be best with this unit.


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2oldman

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Posted: 05/14/19 10:00am Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

Only draws 180 amps from the 12v battery.
Only.. LOL. That's more than an air conditioner takes. You'll need more batteries. And some really big cable. I think I'd opt for the 24v version.

* This post was edited 05/14/19 10:44am by 2oldman *

2oldman

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Posted: 05/14/19 12:56pm Link  |  Quote  |  Print  |  Notify Moderator

toedtoes wrote:

If you look at the ryobi with battery on home depot, it says 141 lbs.
Someone forgot the decimal point.

toedtoes

California

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Posted: 05/14/19 01:25pm Link  |  Quote  |  Print  |  Notify Moderator

2oldman wrote:

toedtoes wrote:

If you look at the ryobi with battery on home depot, it says 141 lbs.
Someone forgot the decimal point.


Yep. [emoticon]

rhagfo

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Posted: 05/14/19 02:13pm Link  |  Quote  |  Print  |  Notify Moderator

Well I am in the process on installing a Viair constant duty air compressor and 2.5 gal tank on our 2016 Ram. Delivers 150 psi. Tucked away under bed of the TV.


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