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post #1 of (permalink) Old 04-13-2002, 04:11 AM
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Tube vs. Square bumpers

I was wondering if any of you with a bit more enginering knowledge can tell me if tube or squared bumpers (and even sliders) are more structuraly sound. Which will hold up best to damage?

Also, I know tube bempers can be shortened but I've also seen angular bumpers with raised edged to give you a better angle.

It there really any difference between them other than looks?
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post #2 of (permalink) Old 04-13-2002, 05:03 AM
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Re: Tube vs. Square bumpers

technically speaking.

The romans used arches because they allowed the openings to carry more weight..

Theoretically speaking a tube is a big log archway, abutted to another big long arch.

Structually speaking the tube should be stronger (round tube)

Personally I like the look of a square tube bumper so that's what I went with.

When your talking about a fender bender, either will work and leave you with possibly a scratch on the bumper.
Talking about a head on at 40mph? well, both are going to be mangled beyond recognition.

So really there is very little structural advantage of round over square.

As fiir "sliders" I assume your talking rocker pannels.
From my experiance on the trails, the guys with the nerf bars (round tube) get hung up on stuff while the guys with the rocker pannels (1/4" angle iorn bolted to the sheet-metal) can slide over rocks.
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post #3 of (permalink) Old 04-13-2002, 05:58 AM
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Re: Tube vs. Square bumpers


Yj's get square bumpers, Cj's and TJ's get the round ones.
Personally, I like the square bumpers for looks.

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post #4 of (permalink) Old 04-13-2002, 02:44 PM
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Re: Tube vs. Square bumpers

A square tube is stronger against the flat sides than a round tube, but it's weaker than round tube with a corner to corner load. In practical terms it doesn't mean squat. Get what you like.
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post #5 of (permalink) Old 04-13-2002, 03:48 PM
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Re: Tube vs. Square bumpers

uh.. ya.. your right here..

TJ's and CJ's get round, YJ's get square..

Cause "It's hip to be square."
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post #6 of (permalink) Old 04-14-2002, 02:29 AM
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Re: Tube vs. Square bumpers

Damn, and here I just went and put a 2"x4" rear bumper on my CJ. I guess I'll have to trade out for 4" drill pipe.....
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