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Unread 07-17-2013, 02:35 PM   #1
congerz83
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AC to OBA Conversion... PRESSURE SWITCH

http://www.zorotools.com/g/00058494/...uctAds&whence=

Can I use the above pressure switch in my set up? It looks more complicated than the typical "two-terminal" system? I have a 5 gallon tank coming & the WOLO 847 Siberian Express in the mail. The tank is rated for 200psi so a switch that cuts at 175 is ideal for me. PLEASE if anyone can help... I've got my finger over the ADD TO CART button now...

I know there are multiple threads on this topic. I just thought this would be the easiest way to a quick answer as time is at a minimum.

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Unread 07-17-2013, 09:52 PM   #2
framanda
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I recommend using this style. http://www.amazon.com/HornBlasters-1...ressure+switchThis is the same one I run on my York based oba. It's compacted, simple and has worked well for the last 4 months.
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Unread 07-17-2013, 10:04 PM   #3
congerz83
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AWESOME! Thanks for pointing me in the right direction... I went a bit higher with the PSI, but you helped a ton!

http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
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Unread 07-17-2013, 10:45 PM   #4
framanda
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Glad I could help
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Unread 07-18-2013, 06:44 AM   #5
congerz83
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http://bit.ly/15KtZgi

Would this hose be the kind I need to connect the whole system?
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Unread 07-18-2013, 01:28 PM   #6
framanda
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I would use air brake line and push lock or compression fittings I got all my stuff from the local napa auto parts and it wasn't to expensive here's a link to my build thread. Toward the bottom of the page is how I did my onboard air. You are gonna need a oiler and oil water separator using a saden ac pump but after that all the components you need are the same.
Here you go http://www.expeditionportal.com/foru...GC-build/page4
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Unread 07-18-2013, 02:39 PM   #7
congerz83
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I'm not sure what compressor I have. The only name I can find on the compressor says "Delphi"
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Unread 07-18-2013, 04:35 PM   #8
framanda
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Regardless of what it is the cylinders in the pump need to be lubricated. Some use an air tool oiler on the suction port and a coalescing filter on the discharge port, and some have had luck disassembling the compresser and packing it with high temp racing grease. I'm sure you know this buy now but engine driven oba setups are difficult and expensive. But on the other hand electric oba can't compare to the performance of engine drivin comp either. Forum member Dynomite did an interesting and inexpensive oba using the stock ac comp but it use only useful for airing up tires his set up would not work with an aux tank for horns or air tools.
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Unread 07-18-2013, 04:58 PM   #9
congerz83
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Already handled. Bought an inline oiler and separator. I bought a slim 5 gallon tank. Air tools aren't the primary reason for the conversion, but with a 5 gallon tank, if I ever needed them, I guess I'll be covered. Planning on running at 175psi.
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Unread 07-18-2013, 05:01 PM   #10
Dyn0mitemat
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My setup works fine for everything. Put an inline filter after the compressor and it's completely fine. Powering my zip lockers just fine. Got about $75 bucks in mine and it fills my 35s up just as fast as my 2 stage home compressor
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Unread 07-18-2013, 05:24 PM   #11
congerz83
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Inline filter in addition to the inline oiler, separator, and inlet filter? It's just another standard inline air filter?
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Unread 07-18-2013, 07:42 PM   #12
Mickey_D
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Biggest thing I would add to all this is to go as big as you can on the air lines. I went 3/8" (I think) on mine and it was the worst. Go at LEAST 1/2" between everything. Including the manifolds. Anything where air has to flow through to your tools/tank should be 1/2". Gauges, pressure switches, etc can all be 1/4" or smaller if you like. But go big or go home with the "working" lines.
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Unread 07-18-2013, 10:45 PM   #13
framanda
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Quote:
Originally Posted by Dyn0mitemat View Post
My setup works fine for everything. Put an inline filter after the compressor and it's completely fine. Powering my zip lockers just fine. Got about $75 bucks in mine and it fills my 35s up just as fast as my 2 stage home compressor
Sorry about that I did not realize you had done more to your set up. The last i remember it had reversed air couplers fittings and a modified tire inflator.
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Unread 07-18-2013, 10:51 PM   #14
framanda
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Quote:
Originally Posted by Mickey_D View Post
Biggest thing I would add to all this is to go as big as you can on the air lines. I went 3/8" (I think) on mine and it was the worst. Go at LEAST 1/2" between everything. Including the manifolds. Anything where air has to flow through to your tools/tank should be 1/2". Gauges, pressure switches, etc can all be 1/4" or smaller if you like. But go big or go home with the "working" lines.
3/8 is plenty big. Most all automotive mechanics shops run 3/8 air hose. The only place I have seen 1/2 air hose was in heavy equipment shops running huge impact guns
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Unread 07-22-2013, 11:02 PM   #15
congerz83
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On the intake line... It goes FILTER/SEPARATOR/OILER/COMPRESSOR or FILTER/OILER/SEPERATOR/COMPRESSOR?





image-1985537588.jpg



image-795103181.jpg
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