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Little holiday project.... |
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alabamatoy
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I dont work here anymore... Joined: 16 February 2004 Location: Signal Mountain Status: Offline Points: 9442 |
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Topic: Little holiday project....Posted: 04 January 2009 at 5:29am |
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I have been wanting to add airbags to the Ford tow rig for some time, but I wanted onboard air first. There are options for mounting a York on the 7.3, but they are all expensive and complicated. Sometime, I may opt for the relocation of the single alternator to the dual-alternator location and build a mount for a York where the single alternator was, but for now, I just went with a small electric compressor. I chose the MV50, which I got for $60 NIB at Dixie Run. I built a bracket that mounts the compressor inside the pickup bed fenderwell, forward of the right rear wheelwell. The compressor has no pressure switch built in, so I bought a cheapo from Grainger thats set for on at 80 and off at 100 psi.
The on/off pressure switch is integrated onto the compressor with a small fabbed-up bracket.
I bought an air tank from Tractor Supply for something like $19, cut the handles and stands off it, and its ratchet-strapped to the bracket. The lines in the photo will be more permanently tucked up out of the way of passing snags.
It works, but there are some problems. First the check-valve/bleeder from Granger doesnt work with this low-volume pump. It gets to around 80 PSI and I guess there is not enough volume flowing and the bleeder opens. That will have to be replaced with a simple no-frills check valve. Also, I still have to run the remaining lines for the airbag controls and the pressure guage in the drivers compartment. Other than this, it seems to work well, albeit slow.
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"If you didnt buy your 1st gen 4Runner new, then YOU are a newbie!!"
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RL-RRC
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Forum Curator Joined: 19 April 2006 Location: Kirkland,TN Status: Offline Points: 1000160 |
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Posted: 04 January 2009 at 7:26am |
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Nice work on the brackets.
If it was mine I'd get rid of some of the extra air hose by putting a tee on the outlet of the compressor and running a short 5" line to the shut off switch
How long does it take to fill that tanks up?
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96 Lexus lx450
85 Toyota Truggy built by Don 69 FJ40 Chance favors the prepared! |
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alabamatoy
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I dont work here anymore... Joined: 16 February 2004 Location: Signal Mountain Status: Offline Points: 9442 |
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Posted: 04 January 2009 at 10:41am |
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I thought about that, but actually more hose is more storage capacity. And I gotta have a check valve somewhere, because the compressor itself doesnt stop the backflow much. Its not meant to do that, its meant to hook up to a tire and be disconnected when the tire is aired up.
It take a while, probably 5 min from ambient pressure. Yes, that's slow, but I dont intend to run air tools off it. It should have plent of oooomph to power airbags or possibly an ARB in the front someday.
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alabamatoy
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I dont work here anymore... Joined: 16 February 2004 Location: Signal Mountain Status: Offline Points: 9442 |
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Posted: 04 January 2009 at 10:48am |
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This is the unloader check valve I used. Apparently the pump just doesnt flow enough air at high pressure to overcome the unloader spring. At about 60psi it just starts unloading, and that as high as the pressure goes. Its a nice idea though, the unloader vents the pressure against the pump so it doesnt have to start against a high pressure. This is what I will get instead. The pump can just leak down on its own.
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"If you didnt buy your 1st gen 4Runner new, then YOU are a newbie!!"
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RL-RRC
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Posted: 04 January 2009 at 11:37am |
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I have the same valve on my oba setup and it works great.
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96 Lexus lx450
85 Toyota Truggy built by Don 69 FJ40 Chance favors the prepared! |
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83K10
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Joined: 17 February 2004 Location: Huntsville, AL Status: Offline Points: 3259 |
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Posted: 04 January 2009 at 11:41am |
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I'd like to do that to my truck just to be able to air up tires and stuff. I've thought about just running a 12V compressor myself for the ease of mounting.
John |
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50Willys
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RCRC Vice President Joined: 16 February 2004 Location: Trinity, AL Status: Offline Points: 3033 |
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Posted: 04 January 2009 at 11:51am |
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Nice setup! Are you eventually going to use metal straps for the tank or just stick withe the ratchet straps? |
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Bob S.
'96 Cherokee, 4.0L w/Auto Trans & locked D44s '99 Dodge 2500 CTD Tow Rig |
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alabamatoy
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I dont work here anymore... Joined: 16 February 2004 Location: Signal Mountain Status: Offline Points: 9442 |
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Posted: 05 January 2009 at 12:47am |
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Im going to see how the nylon ratchet straps last, but I may be forced to go to metal. I bought chain and turnbuckles, but decided not to use it.
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"If you didnt buy your 1st gen 4Runner new, then YOU are a newbie!!"
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