Thread: st4 front a-arm

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    st4 front a-arm
    #1
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    ST4
    My bushing,buching liner,are all made and now i try to find some rectegular tube 1-1/2 x 3/4 x 0.083 wall for my a-arm and is impossible to find that material a the metal supplyer.that's suck .so wath kind of materal is the same strength and will fit.a prefer square or rectegular ( i like the Lk )

    for bad spelling

    thank you!
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    Re: st4 front a-arm
    #2
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    I may be mistaken but a arms should be square or round, I have never seen rectangular a arms
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    Re: st4 front a-arm
    #3
    Millenium Member RickS.'s Avatar
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    Not sure why Badlands used that size. The problem you will now have is finding something to fit the bushing tubes you've already made.
    Their short length limits you to the 3/4" wide tubing. These tubes IMO should have been longer. Then you could use larger (Round 1" minimum) tube. I'm not even sure how Badlands expect you to weld along the 1 1/2" side of the rectangular tubing (If you were able to get it.)
    There is less than 1/8" from that tube to the ends of your bearing tubes for weld. that doesn't make for a very good weld. Unless you're good with tig.
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    Re: st4 front a-arm
    #4
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    i no wath you meen ricks, i think i will go 1 inch pipe but the probleme i will have it's the attachement will grind on the a-arm......i'm stuck with that.
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    Re: st4 front a-arm
    #5
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    I had the same problem trying to find it. I'm going to be talking to RickS in the next few weeks about some ideas I have to change the a-arms to a more common size tubing (1" .120 dom).
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    Re: st4 front a-arm
    #6
    Senior Member KrunchWorkz's Avatar
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    You should be able to use 1 1/4 round, with 1/2" heims. That was my plan. The spacing is perfect for the 1/2 heims with a little spacer if I remember correctly. Then you just bend up the arms or have someone bend them so that they are the same dims as the rectangle arms. Not to mention its far easier to build the arm where it connects the the spindle heim with round than it is with the rectangle tube.

    But for those of you that are looking for smaller quantities in the states of metals try here:

    Speedy Metals Online Industrial Metal Supply
    KrunchWorkz
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    Re: st4 front a-arm
    #7
    Millenium Member RickS.'s Avatar
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    That should work.
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    Re: st4 front a-arm
    #8
    Senior Member KrunchWorkz's Avatar
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    Here is a drawing....

    ST4-Stuff - Assassin Fabrication
    KrunchWorkz
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    Re: st4 front a-arm
    #9
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    SO iinstead of makeing all those little bushings you would just use Heims for the ends?
    CRASH!!! GAME OVER!!!!!
    INSERT COIN!!!!!

    http://www.jdmpooldesign.com
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    Re: st4 front a-arm
    #10
    Senior Member KrunchWorkz's Avatar
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    Yeah I would. Bushings are easier and cheap, but with the space and such, it would be easier to use Heims and 1 1/4 .120 wall tube for the lower A-Arm.

    I stated earlier that I would use a 1/2 heim. I was wrong. I would use a 5/8 with spacers. After looking at my original notes. The MXM-10 rod end is .750" wide. This leaves .750" remaining, which is .375" per side. Purchase or make spacers. If you purchase them, they will have to be spun down 1/8 because the shoulder is .500" long. The other option is to buy some thick walled tube and spin them. I'm sure you can have someone such as KFAB or RickS spin them down. I can even draw them out in solid works and send you the file so you can have them CnC'd if you wish.

    A bit more work, but in my opinion, the arm would be much stronger.

    If you want to purchase spacers, you can get them here:

    Kartek Off Road - High Misalignment Spacers

    Part number: PRM-5812SRT
    They are a bit long, so you would have to spin about .125" off the end.
    Last edited by KrunchWorkz; 03-01-2011 at 11:41 PM.
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