|03-29-2012 03:41 PM|
|03-29-2012 02:15 PM|
|GFY Racing||Glad I could help. If you want to know more, check out this. It has some good info and I think some links to link calculators that will prove valuable as you design your setup.|
|03-29-2012 01:46 PM|
I know the differences in manufacturing processes, but not a lot about the forces it will have to handle. Thats more of the answer I was looking for.
I have no problem using more square, I just wasn't sure I'd have enough to do the upper too and I have the pipe. It's obviously not worth it though so I'll just get a hold of more square, thanks for your help
|03-29-2012 01:09 PM|
Just because it's up out of harms way and is not twisting, doesn't mean it's able to handle the forces that an upper link experiences. Do you fully understand how the placement of the links affects the forces it will have to handle? Do you know the difference in the manufacturing process of the two materials? Use the correct material for the intended application.
Building you own = cheap
Using the wrong materials to build your own = even cheaper and asking for problems. If you've accepted the use of square tubing as acceptable material for lower links, why not use if for the upper as well?
If that's not good enough, do a quick google search on DOM vs. HREW vs. pipe for comparisons on strength. I can't quote them myself.
|03-29-2012 12:13 PM|
I didn't say I don't trust my welds, but a company that welds links together for a business is probably a little better than I am.. Also, I said "I'm trying to do it cheaply, not stupidly" I'm not going to buy a set because that's not cheap, and I'm not going to build a set if I'm no good at welding because that's stupid.
I said I researched the differences in properties between pipe and tube, I am asking about if and why pipe would still not be okay as the upper where it is safe from contact and also won't receive twisting forces. I Know They Are Not The Same.
|03-29-2012 11:53 AM|
|03-29-2012 11:42 AM|
I searched around for awhile and found some numbers on twisting strength and other things like that showing the difference between pipe and tube. I guess I was just confused thinking the upper link received any twisting force on it. I also found a bunch of people saying how pipe dented and bent easily, but didn't really see anything about using them on upper links where they wont come into contact with rocks or anything. If it's really a big deal I'll just find more square tube to use for the upper as well. Also, thanks for clearing up the square being tubing and not pipe I had no idea which it would be.
As far as redoing the lowers instead of lengthening them, I thought that would be best since the joints are already welded on them and I figured I could rely on those welds more than my own. Why exactly am I better off just making new ones as opposed to lengthening my existing ones?
|03-29-2012 06:35 AM|
First - search is your friend
Second - know that there is a difference between pipe and tube, and unless you're going very far out of your way, any square material you're using should be tubing.
Third - Are you wanting to lengthen your lowers, or remake them? Honestly you're just better off making new ones. That's not to say they can't be lengthened, but based on your questions and apparent knowledge on the subject, you would be better off just making new ones, assuming you have the appropriate skills.
Fourth - PIPE should never be used on a rig. Round tubing on the other hand is very suitable, and is what a majority of links are made from. Appropriate type an sized tubing won't easily dent/bend/break under load.
Fifth - You're links shouldn't be seeing any twisting forces. That's why there are joints.
Sixth - SEARCH IS YOUR FRIEND
|03-28-2012 10:13 PM|
xj suspension upgrade ?
Just looking for some input here, not like most who are going to argue about it like they've already made up their mind.
I have aftermarket lower control arms on the front of my XJ, bushing on one end JJ on the other. I want to make a 3 link cheaply, but not stupidly. I have seen and read about people running square tube/pipe? for lowers no problem so I was thinking about lengthening my installed lowers with 2x2x.25". Safe?
As for the upper I plan on using the same ends and am debating between either 2 3/16" or 2 1/2" pipe, or just find more of the square tube/pipe?.
I've read tons of articles about how round pipe dents and bends easy under load so I definitely wont use it on the lowers. But how does it perform under twisting forces that it would see as an upper?
Also this will be on a Dana 30 that I don't see running anything larger than a 33" tire. Thanks for the help and sorry if this is redundant.