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Old March 6th, 2008, 12:43 AM   #1
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Default Using Square or rectangle tube for cage?

is it bad, I was thinking of using it to make a simple cage design in my blazer. I know it will take an impact I made a halo in my derby car and it held great.
any input is good input.
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Old March 6th, 2008, 08:10 PM   #2
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do it and show us pics. I dont think it would hurt anything but it might not look as good as tube but it might look really good.
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Old March 6th, 2008, 08:28 PM   #3
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might be hard to bend? I really dont know though
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Old March 6th, 2008, 08:31 PM   #4
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might be hard to bend? I really dont know though
i wouldnt bend. just cut it at the right angles and weld it up
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Old March 6th, 2008, 09:15 PM   #5
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theres an i dea i never thought of 2 inch square tubing with 1/8 inch wall or 3/16would look pretty nice may be excessive and add a shit load of weight but i like the idea i may look into it as well Great idea Blaze
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Old March 7th, 2008, 06:18 AM   #6
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if you could some how bend it with the corners out like a diamond, it would look sweeeeeeeet!
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Old March 7th, 2008, 06:24 AM   #7
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i wouldnt bend. just cut it at the right angles and weld it up
If you do that i would gusset or plate it (the corners that is) otherwise go for it
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Old March 7th, 2008, 07:17 AM   #8
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I was thinking about the same thing, but my project is still a long ways off. Keep us updated.... I would like to see how it turns out.
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Old March 7th, 2008, 08:49 AM   #9
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when a rig rolls on to a cage and then rolls over the loads move on the cage rotate around that bar as the rig rotates with tube the strength is uniform 360 around it, no mater where the load is applied Square will work better than nothing but round would work better
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Old March 7th, 2008, 09:18 PM   #10
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I used 2" square for my bumpers,brushgaurd,rear tire carrier.... next is the rock slider/step to get in this bitch...
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Old March 7th, 2008, 09:32 PM   #11
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Quote:
Originally Posted by roll-bar Bob View Post
when a rig rolls on to a cage and then rolls over the loads move on the cage rotate around that bar as the rig rotates with tube the strength is uniform 360 around it, no mater where the load is applied Square will work better than nothing but round would work better
I was thinking the same... but put a little simpler if you push on a flat side it will take less force to bend it then on a corner of square tubing. So say a long section were to get some force applied to a flat side it will bend easier and maybe fail. Once square tube bends it keeps going and quickly.
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Old March 7th, 2008, 11:16 PM   #12
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what if what u think is the flat side was actually a corner?so it would be sitting 45 degrees offset from how it would normally lay.
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Old March 28th, 2008, 07:33 AM   #13
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First, the material plays a major role in the overall strength and durability of any type of tubing, even more than then thickness of it.
Remember that.

The biggest problem with Square tube is the way it handles stress loads.
The corners set up stress risers while the flats are under less load, especially torsionally. Ever seen pics of broken square tube? It general will have ragged tears and sharp, angular corners where the failure is. When square tube fails, its not prety.

It does handle an impact well, but the amount of force required to deform square tube is less on the flats, so in a roll, rocks, tress and things like that wil bend the cage faster than if it was round (due to the difference in how the flats and coners handle stress loads).

I have seen cages built and run, they will work, they do tend to be heavier than round tube, not to mention the corners are good head knockers when your getting bounce around, but its better than nothing.

BTW, square tube starts out its life as round tube.

Last edited by orionn; March 28th, 2008 at 07:40 AM.
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