Topic: HREW vs. DOM options

[Nimyad]

O ya why is that? DOM is way over kill, for a offroad truck. Its far cheaper to just use ERW

not if you ever plan on getting in a place where you could roll multiple times and/or length wise. DOM doesn't lose its strength when you bend it no matter what unless it's kinked. while HREW you have to be very careful bending, making sure the weld is on the inside of the bend or else the tube could/can separate at the weld making the only thing protecting your life useless. a good rule when building a cage is use DOM for the bends and HREW for the straight parts to save money. and if anything else wouldn't you rather have something you can trust and is overkill protecting you then what you could get away with?

[junya92toy]

You do know DOM has a seam right?
And when you bend metal you put it in its plastic range, so you add strength to it. It then takes even more force to get it to bend again, until you reach the UTS, and it breaks. Its called cold working, DOM is erw, cold worked to its finally size.

[Nimyad]

You do know DOM has a seam right?
And when you bend metal you put it in its plastic range, so you add strength to it. It then takes even more force to get it to bend again, until you reach the UTS, and it breaks. Its called cold working, DOM is erw, cold worked to its finally size.

yes i know it has a seem, its different though, that's why DOM is stronger then HREW thats a fact.
and if you bend HREW wrong you can make it weaker and there's not a wrong way to bend DOM.

[junya92toy]

A bad cage will kill you DOM or ERW wont matter, A good cage from either will be fine. Now if you want it strong use chro moly

[Nimyad]

A bad cage will kill you DOM or ERW wont matter, A good cage from either will be fine. Now if you want it strong use chro moly

this is true, i'm just saying a a good cage built with DOM will be stronger then the same cage built with HREW

[junya92toy]

That is true, but will you really need that extra strength? Going 200mph in a race car sure, but cruising around in the woods and taking a roll? Im not rich, that DOM is twice the cost.

[Nimyad]

That is true, but will you really need that extra strength? Going 200mph in a race car sure, but cruising around in the woods and taking a roll? Im not rich, that DOM is twice the cost.

woods no lol, rocks yes IMO, that's mostly what i do.

[junya92toy]

We do got some nasty drop offs in the woods, washed out roads, 200-300 feet to the bottom. 

[86rustbucket]

[pumkin toy]

 

[spoolnaround]

If you plan on flopping more than once (well you shouldnt plan on it, but to plan on having a square cage post flop) design is #1.  Dom is just insurance it wont be too out of square post flop.  I flopped my K5 on Dusy a couple years ago and tweaked the hell out of my cage, HREW.  A better (finished for that matter) design would have helped but DOM is stronger and would have minimized distortion.  I am not saying HREW isnt strong enough (contrary actually) but I am saying DOM is definatly stronger and more uniform.  Your logic that square is stronger than round is wrong.  The flat surface area on a square tube will buckle before round will and thats the premise of why round is stronger than square.  Your tubing is only as strong as the weakest point.

That is true, but will you really need that extra strength? Going 200mph in a race car sure, but cruising around in the woods and taking a roll? Im not rich, that DOM is twice the cost.

[TacoRunner]

DOM is way over kill, for a offroad truck.

 

You got to be kidding. While i've seen both on competition vehicles, typically HREW is of thicker wall to make up for the lack of strength. I dont know about your steel prices but the difference in .188 HREW and .120 DOM aren't enough for me to be concerned. I'll pay the extra.

[peacesells]

That is true, but will you really need that extra strength? Going 200mph in a race car sure, but cruising around in the woods and taking a roll? Im not rich, that DOM is twice the cost.

You should just stop talking. Nobody cares if you wanna build a cage out of cheap shitty material, but you shouldnt influence others to do the same. Thats like sayin a 5 point harness is overkill, stock belts are plenty stong.... 38in swampers are too expensive, run 27in street tires instead, theyre half the price.

Any tube that is ever intended to contact rock in any way should be DOM.

[junya92toy]

You have your opinions, I have mine. I wasnt rude and told you to stop talking. And if you really wanted a strong cage, forget DOM and go chromoly.

[Nimyad]

You should just stop talking. Nobody cares if you wanna build a cage out of cheap shitty material, but you shouldnt influence others to do the same. Thats like sayin a 5 point harness is overkill, stock belts are plenty stong.... 38in swampers are too expensive, run 27in street tires instead, theyre half the price.

Any tube that is ever intended to contact rock in any way should be DOM.

and definitely on the contacting rock tubing should be DOM. especially for rock sliders, DOM is harder so it slides better

[TacoRunner]

I dont know about you guys, but if you've ever bent HREW and DOM on a bender by hand you will notice a big difference in the addition of force required to bend DOM. Chromoly very similar to DOM, but HREW much easier. You cant tell me that doesn't translate to additional strength. Besides that, there has to be a reason pro racers perfer it over HREW. It cant be because they like spending extra money.

[Nimyad]

I dont know about you guys, but if you've ever bent HREW and DOM on a bender by hand you will notice a big difference in the addition of force required to bend DOM. Chromoly very similar to DOM, but HREW much easier. You cant tell me that doesn't translate to additional strength. Besides that, there has to be a reason pro racers perfer it over HREW. It cant be because they like spending extra money.

great post

[junya92toy]

Im not saying that HREW is as strong as DOM, I am saying in a truck you are just going to be doing some wheeling in, do you need that extra cost that comes along with it? A properly designed and welded cage of either would be a benefit.

[TacoRunner]

And there is nothing wrong with that statement, except most of the time us wheelers start off with the intent of building a mild rig and by the time we're done its a bit more than we planned on. Knowing that most of us also hate to have to redo things we've built or bought, including cages and saftey equipment, I'd have to say build it once with better material and be done with it. The "it's good enough" approach has gotten myself and many others in trouble when we find out it isn't. You can use HREW, you can use Sch40 but why use thicker material to gain the same strength you would have with DOM. All you've done is add weight, and lost some of the cost savings you think you had with a lesser material by adding wall thickness. And if you decide, that wasn't a good enough reason then take into account that peoples lives could be at stake with a cage you or I built. I feel safer in a cage thats DOM over the other two, Im sure many others would too.

[junya92toy]

[GNasty 82]

[Burl [OP]]

Turn the cover gas on

[94MtnYote]

Ha ha or get out of the wind.

[Burl [OP]]

My dad who teaches welding calls that stacked bird

[pumkin toy]

My dad who teaches welding calls that stacked bird

yeah my cat shits smoother than that!  haha

[TacoRunner]

WTF!?!?

[79yota4x]

my welding teacher calls that a booger weld