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Old 04-06-2008, 07:36 AM   #1
ols1932
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12-Volt Air Pressure Pump

I know this has been discussed many times before but I just had to jump in. Just received my pump from Harbor Freight. It's all it's cracked up to be. It's the fastest portable pump I've had the pleasure of using. Even my wife was able to hook it up and pump up a tire. For the money, I don't believe you can beat it.

Orv
 
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Old 04-06-2008, 08:18 AM   #2
H. John Kohl
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AGREE! I got mine.
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Old 04-06-2008, 08:56 AM   #3
FLSTS03
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Hey Orv & John,
We have a Harbor Freight here in Montgomery. What model did you buy? We were thinking about a nitrogen tank, but a 10# tank holds 40cu' @ 2500lbs and with a 3yr old grandson that will be with us, that much pressure has us 2nd guessing. Trailer Life did a review on Firestone's 12volt unit, but they stopped filling @ 50lbs and we need 80#. Other than the obvious, are there advantages of the 12 volt vs 110 or gas with tanks? Thanks Steve
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Old 04-06-2008, 09:22 AM   #4
Ozz
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I have the H.F., it's good, but you should have a holding tank for best case (with the 12v. pump.)
The High pressure tank is the best way to go period, but pricey. I have used the 5# tanks in the A/C and refrigeration business for 30 years, thrown them around, even dropped one of them accidentally, off a 2 story bldg, safe as can be. I have 3 with me now, and with my tire troubles, I have exhausted only one this trip.
I have mine piped into my truck air system, valved off, use the H.F.pump 90% of the time, air horn, air bags in hitch.
I have a compound gage on the 5# tank, set at 120 supply.
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Old 04-06-2008, 11:08 AM   #5
H. John Kohl
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Quote:
quote:Originally posted by FLSTS03

Hey Orv & John,
We have a Harbor Freight here in Montgomery. What model did you buy? We were thinking about a nitrogen tank, but a 10# tank holds 40cu' @ 2500lbs and with a 3yr old grandson that will be with us, that much pressure has us 2nd guessing. Trailer Life did a review on Firestone's 12volt unit, but they stopped filling @ 50lbs and we need 80#. Other than the obvious, are there advantages of the 12 volt vs 110 or gas with tanks? Thanks Steve
Steve,
Here is the 12VDC compressor from Harbor Freight

Ozz and I have the 12 VDC at 120 PSI unit with no tank from Harbor Freight. As Ozz says you need a holding tank too. I clip onto the battery on the trailer then I can blow up the tires with out the holding tank. That takes about 10 minuets a tire to go from 60 to 80 psi. I use the compressor to blow out the lines for freezing conditions. Again I do not use a tank but never let the lines get over 20 psi when doing it my self. I always make sure one faucet or drain valve is open when the air is going it.

I do plan on using Ozz's idea and put the 5LB husky tank in line with the pump. I just need the plumbing and pressure regulator.
Here is the type of tank I am talking about which I already have.
Hope this helps.
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Old 04-06-2008, 11:13 AM   #6
ols1932
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For my purposes, I see no need for a tank. Connect the pump to the tire, turn it on and when the proper pressure in the tire is reached I turn the pump off and disconnect it from the tire. I already have another compressor with a 2-gal tank that operates off 110 volts but it's way slower than the 12-volt pump.

Carrying a tank along with the pump just takes too much space when you're already carrying everything you own with you every day.

Orv
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Old 04-06-2008, 11:19 AM   #7
JH Sechelt
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We bought one when we were down in Apache Junction (after Quartzsite).
Haven't had it running yet........ but I think HF should pay Ozz a little commission.

J&D
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Old 04-06-2008, 02:16 PM   #8
dsprik
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I also have the HF pump. It works great.
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Old 04-06-2008, 03:19 PM   #9
fulltimedreamer
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I Used the Harbor Freight Pump to air up the tire that went flat while I was setting up here in Pigeon Forge. Looks like the valve stem is the problem. The pump did a great job and worked as advertised. Guess I'll have to pull the tire off tomorrow and take it to a tire store. These valve stems will all get replaced when I get home.
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Old 04-06-2008, 06:25 PM   #10
David and Jo-Anna
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I also recently bought the HF pump based on Ozz's recommendation and have had great success with it. Much easier to use it rather than trying to pull out and setup the 110v Sears compressor I bought last year.
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Old 04-07-2008, 02:14 AM   #11
Ozz
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Remember that some pumps had loose head bolts. The cap screws were not tightened properly at the factory on a batch. I had two that needed adjusting. Tighten them like a wheel; opposite.
If you do use a tank with yours, get a good pressure switch.
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Old 04-07-2008, 03:48 AM   #12
ehmcfarl
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If you have a generator in your RV ,do you all see any reason not to get a 110v compressor such as this from HF : http://www.harborfreight.com/cpi/cta...emnumber=95275

Any pros or cons?

Buddy

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Old 04-07-2008, 04:15 AM   #13
H. John Kohl
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I carry my compressor in the truck, it has only 12VDC when away from home.
Your usage will dictate 12V or 110V.
Cheers,
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Old 04-07-2008, 06:31 AM   #14
Ozz
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Buddy, I think the 120 volt would be much faster, as long as the generator is handy. The value of the 12 volt pump, is that you can use it in the truck, apart from the RV.
I have air horns, and air bags in the hitch.
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Old 04-07-2008, 12:24 PM   #15
ols1932
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Quote:
quote:Originally posted by Ozz

Buddy, I think the 120 volt would be much faster, as long as the generator is handy. The value of the 12 volt pump, is that you can use it in the truck, apart from the RV.
I have air horns, and air bags in the hitch.
Ozz,
My 120-volt compressor is not near as fast as the HF 12-volt pump. That's why I'm glad I got it. The 120-volt compressor has a tank on it making it handy for use as blowing dust out of appliances or computer gear.

Orv
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Old 04-07-2008, 01:04 PM   #16
FLSTS03
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ozz, You mentioned HP tanks but did not say if you were using Nitrogen or CO2. I assume Nitrogen because of you being in the AC business. I figured $140 demurge on tank, $9 to fill and about $80 for gauges,then add air hose/tools. Sound about right? I had a couple oxy bottles but around here I can only fill what the bottle is labeled for.

Steve
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Old 04-07-2008, 02:09 PM   #17
Ozz
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Orv, those 12 volt pumps are slick, I am glad I got mine. I originally bought a Viair 450-C, real pricey. It was no better than the H.F. unit.
Steve, it does. I had both types, use the Co2 now. I have 5 or 6 of them and a couple 20# (I think) If you can, try trading in the Oxy bottles, they should credit you the core charge, which is hefty. Might put you in a good position. If you look at my Ozz's mod's, I think I have a picture of the CO2 tank in my truck.
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Old 04-07-2008, 04:59 PM   #18
FLSTS03
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OZZ, Looked at the tank mod and it's pretty slick. Allready gave the oxy tanks away,customer wanted it and I was glad to give it(before Monty). Steve
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