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Old 02-28-2012, 07:03 AM   #1
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Same compressor for OBA, Air Lockers, etc.

This came up in a discussion with some offroading friends yesterday. Would it be possible to run one small compressor that does your on board air, air lockers, air horn, etc? In theory, could one small compressor do everything you might need air for on your rig? Is anyone running an OBA system that does more than it's uni-task that it was originally intended for? Does anyone have a diagram of how they set this up? Any issues with this setup?

I've been considering OBA anyway.. but if I can eliminate some of the cost of air lockers by using an OBA-setup compressor, even better. Less to buy, less to lug around, etc.

Denis

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Old 02-28-2012, 07:27 AM   #2
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Yes you can use the OBA for more than 1 thing. Just be careful you size the correct one or you will take forever to fill up your tires. Also remember you will have to setup your pressures based on the needs of your lockers. Assuming you are going to run ARB's you will need very little volume to engage the lockers but the pressure is around 90 psi.
My OBA has a 90/120 pressure switch and if I ever swith th ARB's I will have to change it. I am running a york 210 which is a engine driven compressor and capable of running air tools but in your case would be the most expensive option. A viair system or equivalent may be a better alternative.

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Old 02-29-2012, 10:32 PM   #3
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We have an economy OBA system that uses the VIAIR 400C, which would be more than enough to do all that you mentioned. The 400C is the fastest compressor VIAIR makes, and is rated for 35" tires, so 33" would fill just that much faster.

As for air lockers, you can run a 90/120 PSI pressure switch in the tank, or use a regulator to cut down the pressure to the lockers. Having 110/145 pressure switch and using a regulator, just allows you to have "more" air in the tank for when you run an impact gun or start to fill that first tire.

With the 2 gallon tank that comes with the economy kit, you would be able to run your air horn off that. Below is a link to the system. Just let me know if I can help you any further. This economy kit runs $299, and I can either ship it with whichever pressure you decide. A regulator runs $29.

Economy Kit

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Old 02-29-2012, 10:42 PM   #4
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I, like Dempsey, run a York 210 engine driven compressor with a 2.5 gallon reservoir. I have front and rear ARB lockers. When I set my system up I used the pressure switch that came with my ARB compressor (which was very very tiny and only suitable for actuating the lockers.) so that I don't have to regulate it down for my lockers. I can cycle the compressor at the beginning of a trail ride and use my lockers on and off all day without another run cycle. Until I fill my tires that is...

I've also used a 1/2" drive impact to remove lug bolts and powered it with my OBA. Like Dempsey said though, York is the most powerful system you can run, and it's also the most expensive.
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Old 02-29-2012, 11:47 PM   #5
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I ran an on-board system from a stock a/c compressor (no factory a/c so had the room) and once it is pressurized it holds 120 psi in the 2.5 gallon tank. at the moment it's only output is to a hose with a quick release for tools. But if i ever save enough for ARB lockers I plan to put a manifold to run air to the lockers. As long as you are not tooting the horn while locked up and exhaust the tank you should be able to do it all.
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Old 03-01-2012, 12:06 AM   #6
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Quote:
Originally Posted by Ageless Stranger View Post
York is the most powerful system you can run, and it's also the most expensive.
I am curious as to your output from the york, I'd like to compare my homemade setup. I can pressurize the 2.5 gallon tank from 0 to the 120 cut off in about 30 seconds, and while airing tires maintain about 70psi as its airing. Its about 12 seconds to get from the 90 psi low kick on to the 120 high kick off. I haven't run a high cfm air tool yet but when the tank is completely empty its pumping at about 15psi with an air blow gun completely open so I am hoping an impact will not eat as much air for lugs and keep me in the 90/120 range for short bursts so the tank can help out.

here's a video I shot of mine, but be warned that the camera work is as bad if not worse as the narration!

OBA Jeep TJ - YouTube
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Old 03-03-2012, 05:34 PM   #7
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Not sure about how much time it takes, but I run a York with F&R ARB's, 2-1/2 gallon tank, and Air Horns, it's just a matter of a pressure regulator. I also add a guage inside to knoe how much air I am putting out. I also have F&R disconnects



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Old 03-20-2012, 07:48 AM   #8
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I like those quick disconnect points outside. That's pretty brilliant!

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