Harbor Freight vs Costco Portable 12v Air Compressor - In Depth Review w/ Pictures - Page 16 - JeepForum.com
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post #226 of 407 Old 03-08-2008, 03:24 PM
jerryjeeper
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Great article and I like the pictures. I found the Q-Max air compressors on Ebay for an average of $24 ( I bought 4). The reason I liked the Q-Max was the size and adaptability. It was used for an on board air set up in a YJ and was combined with a small surge tank from a Campbell Hausfeld repair shop. With the preset pressure switch in the tank the compressor maintains 105 psi in the tank and refills at the 70 psi range. The system is quiet and compact. I might be able to send pictures to anyone interested. Total project cost was about $90 with all the fittings and hose.

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post #227 of 407 Old 03-08-2008, 06:39 PM
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A pressure switch is nothing more than a simple on-off switch wired in series with the power wire leading to the compressor. Mine closes the circuit at 85 psi to turn the compressor on, then opens the circuit at 120 psi to shut the compressor off.

When you have a choice, buy American made.
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post #228 of 407 Old 03-09-2008, 09:37 AM
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How do I make that setup? That sounds sweet.

Also, I want to mount it under my hood like in the pictures in the thread, but I had a few questions about it. I'm pretty sure mud and water would get to it, but would it trash it? I think so. My other question is how would I get the air to my tires? Should I run a huge a$$ coil line, or split it off and run on line to the back through the cab?
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post #229 of 407 Old 04-03-2008, 09:34 PM
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Got the qmaxx masterflow for $20 on ebay. Just came in today. Can't wait to use it next week.


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post #230 of 407 Old 04-03-2008, 10:05 PM
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Anybody succeeded in mounting one of these on the driver's side battery tray? I managed to fit mine in their once so I know it would fit--barely. Haven't decided how to fasten it down, though.

2000 2.5 TJ, 5spd, 33s, 8274
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post #231 of 407 Old 04-03-2008, 11:06 PM
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Anybody succeeded in mounting one of these on the driver's side battery tray? I managed to fit mine in their once so I know it would fit--barely. Haven't decided how to fasten it down, though.
remove the feet and screw it down? And maybe to reduce any noise/vibrations put a small sheet of rubber between the tray and bottom of the compressor.


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post #232 of 407 Old 04-03-2008, 11:27 PM
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remove the feet and screw it down? And maybe to reduce any noise/vibrations put a small sheet of rubber between the tray and bottom of the compressor.
no rubber needed. this thing is that quiet. I mounte dit here, and no vibrations whatsoever

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post #233 of 407 Old 04-04-2008, 12:22 AM
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how do you have it wired to the battery from there? Can't decide if I want to mount mine or not.


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post #234 of 407 Old 04-04-2008, 08:27 AM
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Originally Posted by .Jch.
remove the feet and screw it down? And maybe to reduce any noise/vibrations put a small sheet of rubber between the tray and bottom of the compressor.
no rubber needed. this thing is that quiet. I mounte dit here, and no vibrations whatsoever
Was thinking also about vibrations and bouncing from the Jeep harming the compressor. If I bolt it down, don't I need some kind of rubber isloator between the compressor and the Jeep?

One reason for me to mount it is that it'll always be there. Never know when I'm going to need it. Do you all think it's durable enough to ride around under the hood for a few years? Should I cover it it with something to keep mud and dust off?

2000 2.5 TJ, 5spd, 33s, 8274
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post #235 of 407 Old 04-04-2008, 08:36 AM
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Was thinking also about vibrations and bouncing from the Jeep harming the compressor. If I bolt it down, don't I need some kind of rubber isloator between the compressor and the Jeep?

One reason for me to mount it is that it'll always be there. Never know when I'm going to need it. Do you all think it's durable enough to ride around under the hood for a few years? Should I cover it it with something to keep mud and dust off?
my thought for a rubber isolator is with the feet being removed if its bolted down against metal unless its really tight theres bound to be some sort of rattle. But if its bolted down in the tub and there is carpet or anything in the back it'll be fine.


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post #236 of 407 Old 04-04-2008, 10:41 AM
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I just purchased one from amazon a minute agao. A guy had one the last time I went weeling and used it to air up a flat tire after the schraeder valve core shot out while airing down. It did a 33" tire in no time at all.

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post #237 of 407 Old 04-04-2008, 01:32 PM
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no rubber needed. this thing is that quiet. I mounte dit here, and no vibrations whatsoever
does that hose reach well to all 4 tires?
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post #238 of 407 Old 04-04-2008, 05:08 PM
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Just tested mine out, worked really well. Used it to air down a tire then air it back up, didn't take more then a couple minutes to go from about 12 to 30 psi on a 33x10.50.


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post #239 of 407 Old 04-04-2008, 06:20 PM
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does that hose reach well to all 4 tires?
Even further. the carpet under my mounts provides extra cushioning as well. I didnt want to mount it under the hood in order to keep it away from water and the elements. I doubt it would last long if it was under the hood, with the heat and moisture. I extended the existing wires and used battery terminals in place of the alligator clips and ran it back through the firewall. i do need a replacement hose because i let mine get too hot and it busted. i just used some self-tapping screws through the carpet and wheel well

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post #240 of 407 Old 04-04-2008, 08:41 PM
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If you're looking for mounts to cushion the vibrations try shock bushings - I purchased some at a local autoparts store and they worked great as a buffer.

Bob
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