How big is your onboard air tank?

[Kevin B.]

I've had this thing kicking around for I don't know how long. Might be 4 or 5 gallons? Would mounting this make any appreciable difference in air-up times?

 

[I Lean]

For as long as the additional pressure @ volume lasts, yes it will help. (like, the first tire probably...) Once you're down to where the compressor is filling (as opposed to stored pressure), no real difference at that point.

 

[Kevin B.]

Once you're down to where the compressor is filling (as opposed to stored pressure), no real difference at that point.

Which is probably not going to take long, is it? I dunno the volume of a 35x12.5r17, but even at just 50 PSI vs 150 that's gotta be so much more air than that little tank can hold that I can't imagine it doing more than taking a couple seconds off the fill time of the first tire.

 

[Tonkaman]

That tank would open up other possibilities like air tools. my favorite use is compressed blown air for getting all the dust off of things like duffel bags and packing totes before unloading.

 

[Unimog]

Already stated, but not going to help that needs lots of air over time, like filling tires or using a die grinder. It would help out with bursts of air, like air hammer, impact wrench, etc.

 

[DAA]

The LJ has a small tank, can't remember, 1 or maybe 1-1/2 gallon? Something like that.

Doesn't make any difference in tire fill times. Does let the compressor just run while moving between tires, or whatever, without tripping the pressure switch or dead heading. Does give a one time whoosh, which has been useful only a couple of times. Once for an air hammer to knock a busted TRE stud out, once seating a bead with a ratchet strap.

Over all, I'm glad the tank is there though. It doesn't eat anything. And provides some benefit.

- DAA

 

[Gravy]

Mine's maybe 5 or 6 gallons in my TJ.
It helps airing up. Fills up between tires. Although my York air compressor puts out a fair bit more CFM than some silly 12v electric unit.

 

[XJEEPER]

I've run a Viair 450C (150psi/100% duty cycle) compressor with a 2.5gal tank for 13yrs and it's served me well, but the tank capacity only shaves time off of the first tire top-off. The remaining 3 tires rely solely on the compressor. Nice to have air stored so that the activation of my ARB's don't require the compressor to run.

 

[glockman]

Mine's maybe 5 or 6 gallons in my TJ.
It helps airing up. Fills up between tires. Although my York air compressor puts out a fair bit more CFM than some silly 12v electric unit.

Those new Smitty built 12v units put out 5 or 6 cfm. Which is pretty close to a York, which are around 6-8 cfm if I remember.

 

[Gravy]

That's awesome output. However my experience with Smuttybilt- it'll work right until it breaks on the anniversary of the warranty LoL

I think mine is rated at 6 or 7 at 1800 rpm.
Bump the throttle and you get a few more.

 

[Trate D]

I have a York setup in my Jeep with a 5 gallon tank and love it. I also have the smittybilt 5.65 cfm 12 volt unit for the wife’s rig. The smittybilt is super fast. I am very impressed with it.

 

[UNSTUCK]

I have a York setup in my Jeep with a 5 gallon tank and love it. I also have the smittybilt 5.65 cfm 12 volt unit for the wife’s rig. The smittybilt is super fast. I am very impressed with it.

Has it lasted past the warranty?

 

[pkrfctr]

9 gallons under the jku, feed by 2 dual arbs. Does the job.

 

[Trate D]

Has it lasted past the warranty?

I’ve only had it about 2 months and used it 3 times so far. So so far yes. 😂

 

[carlojip]

I have a 2.5 gal tank which is enough for my needs.

 

[4554x4]

I carry a full size 40"spare. I have way overfilled it. Perhaps as much as 60 psi. I have a coiled air hose with air chucks on both ends.
It works quite well.