Adding a tank to OBA system

[mrblaine]

I remember Harry's "air robber" from his Ecological 4-Wheeling newsletter, although I'm sure it was called something else.

I thought of him recently when I switched over to a 255/85R16 spare and filled it to the maximum pressure on the sidewall rather than the street pressure for my jeep.

I can connect an air chuck to each end of the Flexzilla hose that I use with my onboard air and equalize the pressure between the spare and another tire should my compressor fail and I have to McGuyver myself to pavement. Frankly, I doubt I would ever need to, but its nice to know I can. I didn't consider 80 psi, just the 65 psi on the sidewall.

He explained what I sort of recalled. It was a useful idea, it wasn't cautioned properly and someone with a 100 psi stored in a tire inside an XJ in the hot sun was the victim of a tire explosion that blew out a bunch of stuff and did about 7 grand in 96 dollars worth of damage. A piece of tread hit the windshield and broke it.

Tires used offroad tend to suffer sidewall damage that might prevent even full inflation pressure so he cautioned to take that into account.

 

[Akitadog]

I have a 3 gal. tank and fill it to about 160 psi. I can break 4 lugs loose before compressor kicks on at 95 psi and still get the last lug broke loose. Not enough volume to spin all the lugs off. As for tire tire inflation not enough volume for airing up all the tires. I can air it up and it's usually good for most off the day switching lockers on and off.

 

[pagrey]

I have a setup that connects all four with quick connects so I can air down all at once and equalize pressure. I use a gas line gauge to set the low pressure, 0-15psi. Then I can use the same system to air up everything at once. Part of the system allows me to connect two tires. It all packs down into a small-ish bag. Not having to set each tire pressure saves allot of time and it's nice because you can do all four up and down hands off.

 

[Vinman]

I had a York on a previous Jeep and it would power a 1/2 drive impact with enough force to remove wheel nuts while the engine was idling and I have also reseated beads at least a dozen times with no air tank.
I see no reason to have an air tank.