Outer Limits 4x4 Board

hi there i have a 4runner i want to put a roll cage on the out side of the truck just need to know what pipe is the best for it ans how thick should be thanx to any one that can answer it




ps some thing like this 4runner

2mm cause its eaier to bend and still light and 3mm for parts that need strength

what type of bender are you going to use to bend it? if using pipe bender i think the best would be 32nb or maybe 40nb meduim wall black pipe. but I'm no expert.

how thick should it be and do u have to use a oxy for the 90 bend on the 32nb

what type of bender are you using?
what wall thickness of 32nb have you got?

bender is a 12ton hydrolic form gas weld its 2" thick to 3" thick not shore

if using that bender have you tried to bend any pipe yet?
Does it cink the pipe?

The majority of what people are using is 32nb med (3.2mm wall) for exos and some are using 40nb med for the main hoops. I use a mix of 32nb light, med, and heavy depending on the application. The easiest (cheapest) way to get good bends with this material is to use a hydraulic bender like you have but get some Dawn brand bending dies for the material you wish to use ie 32 or 40nb (this is how they are stamped). With these you can achieve a 90 deg bend with the slightest of kink on the apex. You wont experience this for bends less than 90 deg.

4runners, like any full bodied rigs, are difficult to build a strong cage around as it's difficult to cross brace effectively. I'd suggest relying on it as protection for the car from flops, rocks and trees and not a "roll cage" even though it will probably take lightish rolls with only minor structural deformation.

Good luck!!

yes i did try last night i had a singh poll its about 2" thick and about 1half thick {wall} and it kinks at about 60 angle so i might use the oxy first then put it in the bender what do u think

if using the dies that came with the bender you will have to make a shim or sleeve so to speak. the way some do it with 32nb is to get 2mm alumium and put this in the bender die and use an offcut of pipe to press this into the die and should bend heaps better. But you will still get slight ripples in the inside radias of the bend also with that bender you will get dents in the top of the pipe because the rollers are not machined to suit this pipe.


hope this helps

slinky wrote:yes i did try last night i had a singh poll its about 2" thick and about 1half thick {wall} and it kinks at about 60 angle so i might use the oxy first then put it in the bender what do u think

I would suggest against heating the pipe to bend it as you will be reducing its strength as you're essentially stretching the material which will make it thinner. Not to mention what tempering effect it would have. You'd be better off spending the $100 (or there abouts) to get the Dawn dies.

Plus heating it with oxy frist will make it kink easyer.

well the oxy out the q? i tryed some smaller staff and it did ok but like u said it put a dint in the top of it cos of the rollers but that cool as long it daz the job i dont care how it looks any one has more ideas just post them they all help

hey how did u go getting the hilux back and what have u dan to it so far

was a long drive but made it. he hasn't done much yet.

hey when u bend some thing how do u get the die back of the pipe its hard work with the hammer there as to be a better way

mate i just tap it with a hammer lightly I havn't found an easier way than that yet. Some times you can just tap the pipe on the ground and the die comes off.

hows the cage coming along?