12V DC portable air compressors.

[PHATSPEED7X]

Thinking of getting one of these for christmas...

http://i31.photobucket.com/albums/c400/phatspeed7x/Cell%20phone%20pics/6db45a3a.jpg

[Sinister C3]

Does the gauge light up or something??

[PHATSPEED7X]

I don't know. All I know is it has a big motor on it so I can handle fullsize truck tires. I has a cheap 12V one and it didn't work worth a damn!

[GreaseDog]

12v compressors dont work worth a damn anyways. not enough power to spin the motor to really make good pressure quickly.

http://www.kilbyenterprises.com/KE-26710.htm

http://www.kilbyenterprises.com/KE-4000.htm

[PHATSPEED7X]

Well I was able to take one out of the box, and test it with one of the new wheels and tires I got. The tire had about 10psi. I hooked it up to the compressor then attached the power clips to the same battery I have in my truck. I turned on the switch and this thing sounds like a regular air compressor. I let it run for about a minute, and the tire was already to about 30psi. I was pretty impressed. It even comes with a three year warranty. Think I'll make sure to add this to the Christmas wish list.

Edit. The truck tire size was only 235/75R15.

[GreaseDog]

now put 1500# on that tire, and see how miserably it fails.

[leveldowen]

now put 1500# on that tire, and see how miserably it fails.

I'm not quite sure if you know how this whole physics thing works, but when a pump is capable of putting out more pressure than there is in the tire, the air is going to go into the tire regardless of how much weight is on the tire.

If your theory was correct, on-board air systems (12v) used on all types of vehicles would never work, be it air springs on a semi or lowered/lifted truck, as the 12v compressor wouldn't be able to fill the airbags to support the ungodly huge loads they carry.

:dunno:

[GreaseDog]

dont know how the physics work, and i dont particularly care. i know that every time i've put air in a tire with no load on it, it fills easier than one with a load.

your argument of the 12v compressors installed by OEMs and with air ride setups is comical. price one of these compressors out sometime... you'll find they're at least 3 times what you'll pay for one of these pieces of crap.

[Macedawg]

Does the gauge light up or something??

i'm sure adam can come up with a light to install on it :lol:

[FastBlak]

:lol:

[Sleeper_6]

I have that same compressor and it works just OK for putting air in my 35s, dont expect miracles or anything but it will put 50psi in to them in about 10 min if you have too...


my oba works much better.

[SilveradoSexy]

Oh **** I forgot Jarred wanted one similar to that for Christmas to carry on the rzr. ooppss

[firestorm]

I'm not quite sure if you know how this whole physics thing works, but when a pump is capable of putting out more pressure than there is in the tire, the air is going to go into the tire regardless of how much weight is on the tire.
Lifting mass requires work, so that work would be performed by the compressor when inflating tires. The compressor may still produce the air flow and pressure necessary to fill the tire, but it will work harder doing so. I've only ever used one of those cheap cig-lighter deals though, which would struggle to put 10psi into a truck tire. That thing lists 30 amps on the box and that it has to be connected directly to the battery. Sounds pretty substantial for a 12v compressor to me.

[Sleeper_6]

Oh **** I forgot Jarred wanted one similar to that for Christmas to carry on the rzr. ooppss

it has no problem with filling the tires on my quad and friends side by sides.