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  1. #1
    Join Date
    Jan 2007
    Posts
    105

    Default Air compressor tank

    ok .. heres the deal . my buddy wants to mount an air tank on top of his jeep so he can fill his tires and stuff, he can't find a long skinny tank tho. Counld i take a peice of pipe and tig some plates on the end? would this hold 150PSI? i also need to weld on fittings. He's afraid im not going to get a consistant weld tho. i was planning to do a fillet all the way around and roll the pipe as i weld accross the floor.
    Jorgensen MFG.
    Custom trailers:from utility to semi trailers i make em all.
    argonweld_bjorn@hotmail.com
    www.ehhitch.com

  2. #2
    Join Date
    Aug 2006
    Location
    Oklahoma City, Oklahoma
    Posts
    304

    Default

    Ok, brutally honest time.....If you aren't pressure vessel certified, then don't even touch a pressure vessel. Also, if you do go through with it, put caps, not plates on the end. If I were your buddy, I'd just go lease me a Ni cylinder and get a regulator and air hose. Then you can fab him up a nice mounting bracket and stuff for it. A 2000psi Ni tank will air up a lot of tires. SSS

  3. #3
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,913

    Cool

    I got some nice long skinny tanks from the boneyard off of semi trucks, they use them for the air brakes....Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

  4. #4
    Join Date
    Mar 2006
    Location
    Hollywood, Florida
    Posts
    10

    Default

    Quote Originally Posted by SkidSteerSteve View Post
    I'd just go lease me a Ni cylinder and get a regulator and air hose.

    What about a SCUBA Tank? We use one for that. We don't fill it to the 3000 lbs. We come off the low pressure side of the valve and it works great. You can find older steel ones real cheap on eBay.
    My Day Begins....When Your Day Ends

  5. #5
    Join Date
    Jan 2007
    Location
    lexington,Ky
    Posts
    528

    Default air tank

    It can be done with flat plate but you need to cut hole in center of caps and run a rod all the way across, and space the caps like you were making a test weld that was going to be x-rayed so you can push it through for 100% penatration. But bye the time you do this it's probaly easyer to buy.

  6. #6
    Join Date
    Nov 2006
    Location
    Lake of the Ozarks MO
    Posts
    3,588

    Default

    I've seen a lot of "air bumpers" made over the years and thot... "man I wouldn't want to get hit with that!!"
    Sorta a cannon ready to blow sideways!

  7. #7
    Join Date
    Sep 2006
    Location
    Wheeling
    Posts
    169

    Default

    Why not buy one of the air tanks your carry with you. They are like $30 for a 5 gallon one and $50 for an 11 gallon one.


    Jerry

  8. #8
    Join Date
    Jun 2006
    Location
    Calgary, Alberta
    Posts
    377

    Default

    Air bumpers are an easy way to make an air tank for a vehicle. Most novice welders can put one together and not have to worry about any problems. 200psi will not explode a vessel like 2000 psi will, and a bumper/vessel made with sch 40 4" pipe with 1/4" end caps will do just fine. If the tank springs a leak, in a collision or otherwise, it will be nothing more than the same as if your air tool coupler pops out of the air hose while you are using it. Psssss goes the air. No ripping or flying metal. Don't build the tank, whatever type it is, out of too thin a material. mild steel, as in A36 or 44W has a 40,000 psi minimum tensil strength. Do the math, and you will be surprised at what pressures can be held in a given container. As for the welding, good fusion is the key. Grind the root weld stop-starts to ensure full fusion and clean the weldment between each pass. This is especially inportant if you are using GMAW due to the cold starts that are characteristic to this type of welding.

    Hope this info helps you out.
    Jonny

    Dynasty 300DX
    Esab PCM 1000

  9. #9

    Default

    I have driven and fixed semi trucks sine before I was legally old enough to drive them. No offense but buy a new tank if you are going to use one of this style. The old (in the 70's ) ones if looked after are good and strong, the newer ones are thinner and don't seem to last as long. They are not very much to buy (depending on the size you are after about $40 Can dollars) and they come with different mounting brackets welded to the tank. A truck parts supply place will have a book with all the tanks pictures(drawings) in it. Look at it and measure up your vehicle and you will likely find one you would think that someone had made specifically for your jeep.
    Amos F

  10. #10
    Join Date
    Jan 2007
    Posts
    105

    Default

    kay .. guys i did it and it worked . i used sch40 pipe with a 5'' id and ressesed the caps in the pipe and it works fine i've got it up to 200psi and no problems . oh and hey skid steer steve .. how do u become a pressure vessel welder if you don't try it. .. no offence or anything.
    Jorgensen MFG.
    Custom trailers:from utility to semi trailers i make em all.
    argonweld_bjorn@hotmail.com
    www.ehhitch.com

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