erhetta

So through my research and reading, it looks like some of the places I want to camp have some sandy spots that require me to air down my tires to get through. I know most of the portible air units that plug into a cigarette lighter are worthless.

Ideally, something that I can use for inflating my kayak, pontoons, camping gear, as well as the truck tires, would be fantastic. (Changeable ends, pressure regulation, etc..., would be needed)

What are some of you using for onboard air that doesn't cost an arm and a leg?

SeriousOffroad

I put together an OBA system using a York compresor from a 78 FSJ. I fabbed up a bracket to mount the compressor next to my A/C compressor. It's driven by a 103.7" belt. The compressor clutch is energized by a toggle switch in the cab and I also installed an extended idle switch to increase the output from the compressor. I installed an unloader to relieve high side pressure and cycle the compressor. I was able to find a 2.5 gallon tank from a local wheeler for around $20. All together I have less than $200 invested.

COSXJFAN

I've seen pictures, and let me say that was $200.00 well spent!!

danwho

After wheelin' with some buddies and checking out what they use, I'm going to buy a 10lb. aluminum CO2 tank (~$80), filled (~$20), regulator 150psi (~$50) and some coil-hose, which I have. Initial investment ~$150, then ~$20 for each fill. If I air down to 10lbs, I figure I can get about 30+ tire inflations from 1 tank of CO2.

okcjeeper

Shoot I would just get one of those portable fillable air tanks..Fill it before you leave with your home compressor or a local 7-11 and call it good...No need to buy a CO2 tank and pay to fill it..

SeriousOffroad

I can run an impct wrench or any air tool off my OBA, you can't do that with a CO2 system.

COSXJFAN

Tried it, doesn't work. There simply is not enough volume of air in a portable tank to fill four tires up to 30 or so PSI from 15 PSI. Granted this was on 33s, but it came up short enough that I don't see it working on stock sized tires either. HTH!! Later!!

xjjeepthing

I'm running Tsunami portable air compressor I bought at Pepboys. Mounted it in the rear cargo are and wired it directly to the battery using a Heavy toggle switch and relay. Works pretty well. I can air up from 15 lbs to 32 lbs in about 10 to 15 min. Im in the process of adding 3lb air tank to add to it.

SeriousOffroad

I had one of those too. Bought it at Checker for $24 and it lasted about 2 years. I was sad to see it go. The bearing on the connecting rod gave up the ghost.

I bough another for around $60 from PepBoys as well. loaned it out to a local wheeler...still haven't got it back.

They are tough to beat for the price.

whowey

What is the duty cycle on those??

How about the CFM rating at differing pressures?

I'm thinking of using one to make an OBA system but I'm wondering if I could get enough flow to run any air tools.

xjjeepthing

Wont have enough flow from just the compressor. An air tank might help, these are not extremely high flow, work great for tires, air matress and such.

SeriousOffroad

http://static.summitracing.com/globa...0%20manual.pdf

There's a ton of info out there (google is your friend).

BlueXJ

So as I suspected those little pumps are nice but not strong enough to support a tank and air tools.

SeriousOffroad

If any you guys/gals are considering an engine driven OBA, these pics might help ya a little bit.
Battery needs to be moved to the drivers side.

OBA Compressor installed next to the A/C compressor.

Airtank and pressure regulator located behind the seat.


The airline QD is located behind the gas cap door.

BlueXJ

Won't work for me as I plan on dual batteries so need the space where the airbox sets for the second battery and the original space for the 1st.