Cage failures

xraidedj · Aug 12, 2009

How can an exo cage be built correctly?...is that a question that is allowed to be asked without useless commentary?!

Cascade_Crawler · Aug 12, 2009

xraidedj said:
How can an exo cage be built correctly?...is that a question that is allowed to be asked without useless commentary?!

Correctly for what? To save your life or to save your sheet metal?

xraidedj · Aug 12, 2009

As u know...my sheet metal is fawked so to save a life...if it can be done right...how so?! Its a simple enough question.

Jason C · Aug 12, 2009

xraidedj said:
As u know...my sheet metal is fawked so to save a life...if it can be done right...how so?! Its a simple enough question.

with structure that goes into the cab and at least lands on the body mounts. Tie your seats and belts to it as well and attach to the fame as good as possible. Lots of triangles and few rectangles... good node structuring. Material prefered is dom pipe tends to fracture HREW dents more easly and will bend with too much vertical load but will hold up ok if designed properly. last have some one who knows how to weld good glue it together for you. in your design think of the structure as a whole all in push pull senarios. ask yourself these questions (if it gets impact here where is the energy going to transfer to). cage sould try to take the impact through the wole cage and not one isolated area to dispurse the load. and last no real long spans.

WHITE TRASH1 · Aug 12, 2009

Jason C said:
with structure that goes into the cab and at least lands on the body mounts. Tie your seats and belts to it as well and attach to the fame as good as possible. Lots of triangles and few rectangles... good node structuring. Material prefered is dom pipe tends to fracture HREW dents more easly and will bend with too much vertical load but will hold up ok if designed properly. last have some one who knows how to weld good glue it together for you. in your design think of the structure as a whole all in push pull senarios. ask yourself these questions (if it gets impact here where is the energy going to transfer to). cage sould try to take the impact through the wole cage and not one isolated area to dispurse the load. and last no real long spans.

Great advice but he has no frame.. It'll take a whole lotta plating of the unibode to make it strong and safe.

Damnyankee · Aug 12, 2009

Jason C said:
with structure that goes into the cab and at least lands on the body mounts. Tie your seats and belts to it as well and attach to the fame as good as possible. Lots of triangles and few rectangles... good node structuring. Material prefered is dom pipe tends to fracture HREW dents more easly and will bend with too much vertical load but will hold up ok if designed properly. last have some one who knows how to weld good glue it together for you. in your design think of the structure as a whole all in push pull senarios. ask yourself these questions (if it gets impact here where is the energy going to transfer to). cage sould try to take the impact through the wole cage and not one isolated area to dispurse the load. and last no real long spans.

so your saying a cage made with hrew is ok if designed properly, even though it has half the tensile strength of SOME DOM? (1026 CRDOM is about 87Ksi, and HREW is about 45)

therefore you'll need twice the material, and with the added weight your safety factor goes down making it a mute point.

I want to see REAL information here, not speculation and hearsay.

Im not a cage designer, but i know steel. it doesn't matter how good your cage is designed if you use the wrong material. and "DOM" is not necesarily the right material.
:stirpot:

MarcW · Aug 12, 2009

WHITE TRASH said:
Great advice but he has no frame.. It'll take a whole lotta plating of the unibode to make it strong and safe.

Thats very easy and easily solved. :;

jeepmauler · Aug 12, 2009

WHITE TRASH said:
Great advice but he has no frame.. It'll take a whole lotta plating of the unibode to make it strong and safe.

Unibodies are strong as ****....the key is to land the tubes/legs in the right spots...when done properly the end result is insanly strong......go ahead and argue....but your wrong....this is the proof.

Spanaway Mudder · Aug 12, 2009

Damnyankee said:
and "DOM" is not necesarily the right material.
:stirpot:

ok Yankee..what is the :eeek:material?

WHITE TRASH1 · Aug 12, 2009

Damnyankee said:
so your saying a cage made with hrew is ok if designed properly, even though it has half the tensile strength of SOME DOM? (1026 CRDOM is about 87Ksi, and HREW is about 45)

therefore you'll need twice the material, and with the added weight your safety factor goes down making it a mute point.

I want to see REAL information here, not speculation and hearsay.

Im not a cage designer, but i know steel. it doesn't matter how good your cage is designed if you use the wrong material. and "DOM" is not necesarily the right material.
:stirpot:

In my post I didn't mean to say dom is the be all end all of tubing but when you use that term most people think strength...

As far as some dom not being as strong as others I'd venture to say the 45kpi tubing is generally strong enough so it is all a moot point there. Sure a higher grade is better but why run .90" wall unobtanium when .120" hrew steel will work great?

WHITE TRASH1 · Aug 12, 2009

jeepmauler said:
Unibodies are strong as ****....the key is to land the tubes/legs in the right spots...when done properly the end result is insanly strong......go ahead and argue....but your wrong....this is the proof.

A picture of a stripped and tubed xj sure does make me wrong.. I have a buddy that is doing the exact same thing with an xj right now. Welding tube to plates and plated sheetmetal just doesn't smell like the hot setup to me. I guess I should throw my fully boxed frame away and start over with a stack of 18 gauge... :haha:

Fordzuki · Aug 12, 2009

jeepmauler said:
Unibodies are strong as ****....the key is to land the tubes/legs in the right spots...when done properly the end result is insanly strong......go ahead and argue....but your wrong....this is the proof.

X2
well, PARTS of unibodies are strong as ****. Most cars nowadays are made of HSS and UHSS in and around the passenger compartments, it's only the end foot or so of the rails that are made of mild steel. :awesomework:

Money Mark · Aug 12, 2009

Ya, jeepmauler......so there, TAKE THAT......

My Jeep Grand Cherokee is hard as ****.:redneck:

jeepmauler · Aug 12, 2009

WHITE TRASH said:
A picture of a stripped and tubed xj sure does make me wrong.. I have a buddy that is doing the exact same thing with an xj right now. Welding tube to plates and plated sheetmetal just doesn't smell like the hot setup to me. I guess I should throw my fully boxed frame away and start over with a stack of 18 gauge... :haha:

So your just gonna land tube on on a stock Toy frame and burn it?.....with no plating to spread the load?....No wonder your last pile came apart after your little roll down the hill:haha:

jeepmauler · Aug 12, 2009

Money Mark said:
Ya, jeepmauler......so there, TAKE THAT......

My Jeep Grand Cherokee is hard as ****.:redneck:

Next time I see you we are gonna FIGHT....................or wheel

Spanaway Mudder · Aug 12, 2009

Jeff..Please tell me that is up at the OM...

Iam all ears about your build up on that xj:awesomework:

Binder · Aug 12, 2009

Damnyankee said:
Im not a cage designer, but i know steel. it doesn't matter how good your cage is designed if you use the wrong material.

I think you missed the point. It's a matter of using material that's up to the task for which it's designed. It's not about over building because you found a material that's stronger than the one you have that's already adequate.
It's all about the design of the structure.:awesomework:

jeepmauler · Aug 12, 2009

Spanaway Mudder said:
Jeff..Please tell me that is up at the OM...

Iam all ears about your build up on that xj:awesomework:

Nope....thats years before the OM was concieved

That Truggy endured more abuse than ALL the POS's on this board combined:redneck:

I loved that thing....the biggest mistake in my wheelin career was to not listen to Brad(Jobless) and put an Atlas in that thing and keep competeing.Instead I scrapped it and went a different direction with an unfamiliar tube car......oh well.....such is life

WHITE TRASH1 · Aug 12, 2009

jeepmauler said:
So your just gonna land tube on on a stock Toy frame and burn it?.....with no plating to spread the load?....No wonder your last pile came apart after your little roll down the hill:haha:

Nope everything but my sliders has plate on the frame. Oh and I have no idea what you're talking about my junk coming apart, not one weld came apart or visibly cracked. Sure there were bent tubes, you can blame Chris Alston chassisworks for their design work and .134x1.625" tubing, It kept peanut and myself alive and after a bit of time with the porta power it's back into shape to wheel again.

Jason C · Aug 12, 2009

Damnyankee said:
so your saying a cage made with hrew is ok if designed properly, even though it has half the tensile strength of SOME DOM? (1026 CRDOM is about 87Ksi, and HREW is about 45)

therefore you'll need twice the material, and with the added weight your safety factor goes down making it a mute point.

I want to see REAL information here, not speculation and hearsay.

Im not a cage designer, but i know steel. it doesn't matter how good your cage is designed if you use the wrong material. and "DOM" is not necesarily the right material.
:stirpot:

Whatevah.... I have such mad skillz I could make a cage out of PVC that would hold up. Hell I might even try wood. MAll'er you got any nails or lag bolts? instead of "trying" to be a know it all on the computer why don't you go do some real world testing like I have CHIEF!

Typical NW- HURTFEELERS WEB WHEELING ASS CLOWN! but why would I expect more from this bord.