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can I make a roll bar out of pipe

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by James90, Oct 22, 2001.

  1. James90

    James90 1/2 ton status

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    I made some rock sliders out of 1.5 ID pipe about 1 5/8 OD and was wounder if i could use a pipe bender with that pipe and make a roll bar and seat mount out of it and it be strong

    I have been welding for a wile so the is not a prob

    thanks

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  2. Chris Demartini

    Chris Demartini 1/2 ton status

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    <font color=blue>No pipe is NOT strong enough to make a cage out of! It will not suport the weight of your truck in the event of a roll. Use some 2" .120" wall HREW tube, and find someone with a real tube bender (not a pipe bender because they're not the same). I can weld good too, but when it comes time to weld up my cage, I'm having a pro do it.
     
  3. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

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    you can weld one up yourself but, i would use bigger tubing. having it collapse is a heck of a way to find out you should have used thicker tube.

    donate to the "Build Scott's Suburban Foundation"
    scott,
    1989 GMC suburban 3/4t 4" lift soon to be rollin on 36" swampers, tbi350, th350, np241
     
  4. James90

    James90 1/2 ton status

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    thanks guys

    I do all my own fab work and a tubeing bender is like 500 were a pipe bender is 200 and that pipe has a .125 wall thicksness so I thot it might work but guess not

    I guess my life is worth an extra 300 bucks

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  5. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Pipe has a lot of unknowns. "TUBE" would be better. The spec are more consitant. Don't really need to worry about getting DOM. For slow speed roll overs most wheelers are involded in DOM is overkill. If it were a race car going 150mph yes DOM is the stuff you want. For a 5mph roll your fine with welded seam tube. Any well designed cage is going to improve your safty 100 fold.
    Just make sure you get good penetration on your welds and don't undercut the welds.
    Do not go to the top of the rear wheel wells. No suport there. They will crush like a bear can. Run your rear legs all the way to the back corners where you can get close to the tail pan for more suport. Try to stradle the 1st and 2nd cab mounts if your not going to the frame with the cage. That will give you the most suport. Always use a backing plate of a slightly different size than the plate on the cage legs. When they are the same size it tends to act like a shear. The bigger the plate on top the better. It will distribute the load over a greater area and help prevent punch through. Put spacer plates in the rib on the bed so that you can get the bolt sight but not crush the ribs in floor. Remeber the cage is only as solid as the floor it is attached when not going to the frame. If you got rust then it needs to be repaired.

    Women dig dents and flat paint!
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  6. James90

    James90 1/2 ton status

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    thanks Grim

    I was just going to make a roll bar out of pipe till I got a tubeing bender

    But I thank I will just wate till I buy a tubeing bender and make a whole 6 or 8 point cage

    and if I mount it to the frame can the top and bottom plates be the same size

    and what die for a tubeing bender sould I buy 2" or 1 5/8"

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  7. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Or just look <a target="_blank" href=http://www.swracecars.com/roll%20bars%26cages.html>here</a>

    Bad Dog

    85 K30 CUCV, 350 TBI, TH400, 205, D60/C14, 4.56 Locked
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  8. riz

    riz 3/4 ton status

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    <font color=purple>NO !

    L8r,
    . Riz . <a target="_blank" href=http://www.geocities.com/rizmonkey>www.geocities.com/rizmonkey</a>

    <font color=purple> BOW CHICKA BOW WOW !
     
  9. ChevyCaGal

    ChevyCaGal 3/4 ton status

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    Pipe is designed for the force of water on the inside pressing out not something pressing into it.... from what I know it would break and not absorb a hit like tubbing would. Tube is made to absorb a smack like a rock hitting it in a roll over and bend before it would snap. Just my .2 cents [​IMG]

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  10. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Hey Riz, is that "NO!" a reply to "can I make a roll bar out of pipe" or to my suggestion? Is there a problem with those rollbars that I don't know about, or did you just reply to the wrong post?

    BTW, if it was not clear, I was replying to the post from James90 (the original poster) that said he had decided to wait till he got a tubing bender. I totally agree, no way should anyone make a rollbar out of pipe! Also, don't use a pipe bender on tubing when safety is an issue.

    Bad Dog

    85 K30 CUCV, 350 TBI, TH400, 205, D60/C14, 4.56 Locked
    Some day: 4" lift, 44" tires, massive cutting, shorter wb and rear overhang.
     
  11. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    Just got a JD2 Model 3 with degree ring and 1.75" die, cost me 524 bucks and change. I would think 1.75" tubing would be sufficient for most use, I'll be going 2" inch due to a certain rulebook.

    Bubba Ray Boudreaux,
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  12. James90

    James90 1/2 ton status

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    Have you used the JD2 yet if so

    is it hard to use?

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  13. MudFrog

    MudFrog 1/2 ton status

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    If any of ya'll are interested in tube/pipe benders my dad sells them. I can get them new or used. New is around $5000, but used can be as low as $500. I just talked to him and the lowest he has now is $1,000. He also sells "Roll Bar Tubing", which is 1.75" thick and 10 gauge. It comes in 20 ft. sticks. Just thought I'd give a heads up in case anyone is interested.
    He also sells 4 and 2 post car lifts, new and used.
    <a target="_blank" href=http://www.ben-pearson.com>Lifts and Benders</a>
    You can see the differen't models of lifts and benders.

    89 K5 Silverado
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  14. I am just wondering exactly what type of pipe shouldn't be used as a roll cage (or sliders). I work in the natural gas industry, and the pipe we use is steel, seamless, and runs about 35,000 pounds tensile strength minimum. To me, that would be more than adequate for just about any roll cage you would want to build. It is just standard carbon steel alloy. It probably won't bend too much were you to roll over on it, but I assure you it won't break. We use some of the pipe as lift points on equipment that weighs 100,000 pounds! Granted the pipe is 6" in diameter, but the wall thickness is only 3/8". 2" pipe with 1/8" wall will probably handle a Blazer. The only drawback I can see is the weight. Someone please enlighten me.

    God has a hard on for Marines, because we keep Heaven chock full of fresh souls!
     
  15. ChevyCaGal

    ChevyCaGal 3/4 ton status

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    You said click here... and Riz said no... like no I will not click there... as in he's being a dork. [​IMG] That's all him being funny! [​IMG] You gotta learn how to read his posts from the Riz viewpoint.... LOL

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  16. Michael

    Michael 1/2 ton status

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    In a nutshell, yes, you can make a cage out of anything. This subject has been hashed numerous times by people much smarter than me, but my opinion is make the cage out of material that is designed for a cage....tubing. Wheather it's Chromoly, DOM or HREW, let your pocketbook be the giude. A cage built out of pipe today would be better than a super high dollar custom DOM cage three days after you roll your truck. There is no doubt there are lots of strong materials out there....pipe included. There are some very crude cages made out of pipe, square tubing etc. out at the local dirt track that take lots of abuse, but if ya wanna do it right get some tubing and a nice mandrel bender.

    Michael[​IMG]
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  17. I think RIZ was answering about being able to make a pipe out of a roll bar. hehe


    '84 K5

    Chevy in my blood.
     
  18. hammer

    hammer 1/2 ton status

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    I do some tube bending at work and most pipe doesn't bend like tubing, some of it stress cracks, breaks, tears. I would only use DOM tubing for a roll cage. As far as sliders I'm looking at some 1 1/2 x 3" 3/16 wall tubing for my truck
     
  19. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    <blockquote><font class="small">In reply to:</font><hr>

    Have you used the JD2 yet if so
    is it hard to use?

    <hr></blockquote>
    Not yet. I'm waiting to get the fundage for a mount for it. Probably go with a mobile table so I can roll it around. And hopefully next spring I can hydro it so I don't get the workout that I'm expecting. Steph, don't you have a tube bender?



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  20. coopertwpk

    coopertwpk 1/2 ton status

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    what about conduit they sell sch 80 also double xx class this is armor type stuff used in cases that a car may run into it,back hoe may hit it etc.I use .120 wall tubing on anything i do its cheap enough.

    88k5 silverado w4"lift <font color=orange>d44 and corp14ff</font color=orange> with 4.11
     

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