You ever notice the first thing offroaders do
when they get offroad for that day-long trail run? The first thing
they do is "air down" - they drop their tire pressure to somewhere
around 12 psi. for maximum traction on the trail. Once the trail
run is over, the tires need to be filled back up before everyone
heads on home.
Determining a location for the compressor - I
chose to remove the stock jack mount and replace it with
ExtremeAire
There is usually three or four rigs that have
on-board air of some sort, so those that don't have a compressor
can wait in line with the others that don't while the few that do
have air refill everyone's tires.
That's not a bad thing of course,
most offroaders are always willing to lend a helping hand. Here's a
new solution to those who are looking at getting on-board air -
The ExtremeAire compressor. This little beast can fill 35"
tires in nothing flat (actually it will a 35 tire from 10 psi to 35
psi in about 3 minutes).
You can also use it to power your ARB
lockers (something I plan to add in the near future). How does the
Extreme Aire stack up to other compressors? It boasts a 3/4
horsepower fan-cooled motor that pumps out 150 psi and a flow rate
of 4cfm - more than enough to run your air tools. The ExtremeAire
is a continuous duty compressor.
That means you can use it without
having to shut it down and letting it cool off. If you want to fill
your tires, your buddies tires and his buddies tires you can do it
non-stop. Most others only have a 15% duty cycle which means 9
minutes of use and 51 minutes to cool down. The ExtremeAire is 100%
duty cycle. Run it to your hearts content.
Installing the compressor was easy once I
chose the location. A little modification to the fender and it fit
right in.
Not bad for a 17-pound compressor that will fit
under your hood (with some modification, of course). The
ExtremeAire is 14 inches long, 6 inches wide and only 10 inches
tall. I will be using it to fill an air tank mounted under the
Jeep. It can be used without an auxillary tank, but I opted for the
tank set up.
The compressor is set up with a washable and reuseable
air filter. Maintenance? Just remove and clean the filter as needed
- the motor and pump are permanently sealed and lubricated and the
compressor can be mounted in any angle or direction. Mounting the
compressor was easy. As stated earlier, there was some modification
necessary.
Since, I no longer used my standard Jeep jack, I had the
perfect place to mount the compressor - on the passenger side
fender well where the jack used to be.
After flatening the fender a couple of inches,
I used 2 spare brackets from a past install for the inside mounts
(nearest the engine)
After removing the jack mount, the compressor
looked like a pretty good fit. The only issue was the height of the
compressor. I had to flatten the fender well about 2 inches to make
room. Nothing major really, a few minutes with a large hammer and
the fender well was ready for the compressor.
I made sure that the
tire clearance was not affected by my modification of the fender
well. The changes to the fender well were so far towards the inside
and above the shock mount that there is no difference in my tire
clearance whatsoever.
I used some existing brackets that I had
laying around (spare parts from some long-ago install!) Once
mounted, I made sure to check the clearance between the top of the
compressor and the hood.
No problem - I have about a half-inch of
clearance. The Tank The tank is 6" in diameter and holds
about 2 gallons of air - more than enough for my needs. The tank
measures about 17" in length and comes with a 145 psi pressure
switch.
Firmly mounted, the next step is to connect
the wiring.
After much measuring and deliberating, I decided
to mount the tank under the tub. I looked everywhere on the Jeep
for a suitable location and that seemed to be about the only place
it would fit.
I had to drill four holes in the tub and suspended
the tank using the mounting brackets. The only modification under
the Jeep was to slightly bend the E-Brake line. (This had to be
done only because I was a little bit off on my measuring and
hole-drilling. If done properly, there should be no need to modify
anything under the Jeep.
With the location of the air tank, I need
about 9 feet of air hose to reach the compressor. I also plan on
installing a quick-disconnect on the rear bumper so I won't need to
crawl under the Jeep for air. With a price tag of $379.95 for the
compressor, you'll be hard-pressed to find a better deal anywhere.
A few things that Extreme Outback recommends:
Always use a circuit breaker or at least a
fuse of 60 amps. An On/Off toggle switch is recommended in line
with the pressure switch. The compressor can be manually turned off
if the system ever develops a leak or if the vehicle is left
unattended
If not using a pressure switch, install a
toggle switch to turn the relay on and off. The ignition "on" wire
is a good choice for power so that the compressor will only run if
the vehicle is running.
When hooking up to the vehicle's battery, if
distance is less than 2 feet, 10-gauge wire is sufficient. For
longer runs, use a heavier gauge wire to avoid current loss and
possible damage to the compressor's motor. For more
information on these and many other Extreme Products, contact
George Carousos at:
(707) 447-7711, or visit Extreme Outback online at: Extreme Outback
Products
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