How to build your own rear control arms - Toyota FJ Cruiser Forum
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post #1 of 26 (permalink) Old 07-22-2009, 05:33 PM Thread Starter
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How to build your own rear control arms

So instead of buying new rear control arms to replace and beef up the crappy bent stock ones, I ended up picking up a 110 volt welder off of craigslist. I then bought some 1 1/2 steel square tube with a 1/4 wall all for a lot less then I would of paid for after market arms.
I went with the square tubing because I like the look better then tube but I also believe by turning it on end it would be stronger then tube. In theory the corner will have a smaller radius then tube and this would make it stronger, it also creates a lot smaller contact area when sliding across rocks.
So her are some pics.
Welder

Tube

The original control arms only have a 3/32 wall...no wonder they bend easy.
You can see the difference in wall thickness


Here is the stock control arm all bent

I just cut the ends off so I could reuse them.

and then notched the tube and welded them on. I use one of the straight control arms I got from Lordac put some steel pins in it and used it to hold the new one in place while I welded it.



I painted it up and mounted it to test it out.....fits perfect.



Also added oversize washers to help prevent the mounting brackets from bending and getting mashed up.


There is no way in hell these will ever bend, they are extremely heavy duty.

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post #2 of 26 (permalink) Old 07-22-2009, 05:41 PM
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Re: How to build your own rear control arms

Interesting project, I like it. You could make some sliders real easy too by using some angle iron. That would work perfect for your application.
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post #3 of 26 (permalink) Old 07-22-2009, 07:35 PM
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Re: How to build your own rear control arms

nice work!
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post #4 of 26 (permalink) Old 07-22-2009, 07:38 PM
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Re: How to build your own rear control arms

Great work, looks good! So how much for a set???


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post #5 of 26 (permalink) Old 07-22-2009, 07:53 PM
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Re: How to build your own rear control arms

How was your weld penetration? The 110 volt welders top out at 1/4 in. thickness. I have the same welder and have not had good luck without preheating the thicker metal.

They do look good. I might need to try this mod....if I can get the welds right.

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post #6 of 26 (permalink) Old 07-22-2009, 09:31 PM
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Re: How to build your own rear control arms

Nice work.

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post #7 of 26 (permalink) Old 07-22-2009, 09:53 PM
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Re: How to build your own rear control arms

Nice work!!!
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post #8 of 26 (permalink) Old 07-23-2009, 12:42 AM
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Re:How to build your own rear control arms

That is unreal, I know a fabricater here in Middle Ga, I think I will be calling in the morning, to do some cutting and welding for me. a little paint and boom there you go...

Quote:
Stinkyfinger previously said: View Post
So instead of buying new rear control arms to replace and beef up the crappy bent stock ones, I ended up picking up a 110 volt welder off of craigslist. I then bought some 1 1/2 steel square tube with a 1/4 wall all for a lot less then I would of paid for after market arms.
I went with the square tubing because I like the look better then tube but I also believe by turning it on end it would be stronger then tube. In theory the corner will have a smaller radius then tube and this would make it stronger, it also creates a lot smaller contact area when sliding across rocks.
So her are some pics.
Welder

Tube

The original control arms only have a 3/32 wall...no wonder they bend easy.
You can see the difference in wall thickness


Here is the stock control arm all bent

I just cut the ends off so I could reuse them.

and then notched the tube and welded them on. I use one of the straight control arms I got from Lordac put some steel pins in it and used it to hold the new one in place while I welded it.



I painted it up and mounted it to test it out.....fits perfect.



Also added oversize washers to help prevent the mounting brackets from bending and getting mashed up.


There is no way in hell these will ever bend, they are extremely heavy duty.

Blacked out and No were to go.....

I DONT CARE WHO YOU ARE AND HOW OLD YOU ARE, GET A COLONOSCOPY AS SOON AS YOU CAN, NO MATTER WHAT YOUR DOC SAYS !!!!
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post #9 of 26 (permalink) Old 07-23-2009, 12:45 AM
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Re: How to build your own rear control arms

Were you concerned with the heat and the rubber bushings?

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post #10 of 26 (permalink) Old 07-23-2009, 01:12 AM
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Re: How to build your own rear control arms

Quote:
layonnn previously said: View Post
Were you concerned with the heat and the rubber bushings?


You are always up at thid hour when I am...LOL My meds wake me up...to funny

Blacked out and No were to go.....

I DONT CARE WHO YOU ARE AND HOW OLD YOU ARE, GET A COLONOSCOPY AS SOON AS YOU CAN, NO MATTER WHAT YOUR DOC SAYS !!!!
THANK YOU


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