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tell me about "anti-inversion" shackles?

Discussion in '60-Series Wagons' started by tpattyII, Feb 28, 2006.

  1. tpattyII

    tpattyII

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    im minutes away from buying an OME kit for my 60 and keep seeing anti-inversion shackles everywhere. what are the pro's and con's to getting these aswell. do they have to be welded?

    thanks
     
  2. djawahir

    djawahir

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    Do you plan on doing some serious wheeling? I mean, like the type that takes the wheels off the ground? If not, you can do the anti-inversion or the normal type of shackle. If there is even the slightest chance you would wheel the rig, just get the anti-inversions. The anti-inversion shackles are better in most cases. And as far as I know, I've never seen any anti-inversion shackles that need to be welded...
     
  3. Mace

    Mace rock scientist.. Staff Member s-Moderator

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    If you need antiinversion shackles you need longer shackles from the getgo..


    I would say that I do not see any reason to get them.

    :flipoff2:
     
  4. nuclearlemon

    nuclearlemon not an addict Moderator

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    i've seen quite a few inverted springs that could've been helped with anti inversion.

    as mentioned, if you routinely pick up wheels, get em.
     
  5. Mace

    Mace rock scientist.. Staff Member s-Moderator

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    If your springs are able to go inverted your shakles are too short. I cannot imagine why running shackles that are too short on a rig is ever a good thing.

    Even with antiinversion shackles you are putting a bandaid on your suspension. Instead of allowing the most flex possible you are straining the spring eyes and bushings by putting a bunch of pressure on them.
     
  6. beaufort-fj60

    beaufort-fj60

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    explain this some more... what is too short? factory length or shorter than factoty.
     
  7. nuclearlemon

    nuclearlemon not an addict Moderator

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    how long do you want them to be? at least two that i've seen inverted were running extended shackles...one running 2 1/2 with stock springs, other running 1 1/2 over stock with skyjacker 4".

    the stock rig was runnign hard through a mud bog and popped the front end out.

    other rig was crawling a rather difficult twisty section and put the right pressure to cause it.

    both of these rigs sat very nicely with a slope in the shackle away from the other end of the spring.

    i don't think longer shackles would've made a difference.
     
  8. agent orange

    agent orange

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    You dont want them to be so short that you run out of shackle travel before the spring fully compresses, but there is a point of diminishing return after that as far as function goes. Oh, and they can definitly be too long (the ones MAF puts with their 4 inch suspension kits fall into that category IMHO).
     
  9. lowenbrau

    lowenbrau SILVER Star

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    Mace is almost right.

    Where the theory breaks down is when a rig is climbing out of a hole and bumps the shackels into the bank while the suspension is unloaded. It happens all the time around here when you are breaking ice on river crossings.

    If you have an over length shackel or spring then you have about a 50/50 chance of bending the spring at the fisrt spring clamp when you invert. Some method of inversion proofing will save having to buy new leafs.
     
  10. beaufort-fj60

    beaufort-fj60

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    I've been "acquiring" a lift in pieces and the shackle length is something I an not sure about. sofar I have the "habu"/terrain tamer rears leafs the heavy version and stock length rear anti-inversion. I've got the OME light fronts and stock length anti-inversions. How much longer/larger diameter on the arc are aftermarket springs? is it up and out (higher the lift the further apart the shackle eyes are) will stock length shackles create odd ball angles with the aftermarket springs?
     
  11. Mace

    Mace rock scientist.. Staff Member s-Moderator

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    most of the time, the rest of the time youbend leaf springs.



    If you really have trouble with this happening you need a shackle reversal..
     
  12. High Desert

    High Desert

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    Don't you weld "reverse" shackles on the front? And does not OME offer them too?

    Just to throw more fuel on this fire.
     
  13. beaufort-fj60

    beaufort-fj60

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    i think the "shackle reversal kit" is a system that basically moves the "working" shackle to the rear and the stationary pin to the front. factory setup is pin in back and "working" shackle up front.

    and yes you weld the stationary pin holder on the front.
     
  14. Mace

    Mace rock scientist.. Staff Member s-Moderator

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    Exactly, a SR flips the spring around so that the frame end of the spring is at the front and the shackle end of the spring is behind the front axle.

    The only reason I acutally like SR is if you are smacking the shackles hard enough to bend a spring. Then you make a nice smooth rap for the item you are hitting by doing a SR.


    A shackle only need to be as long as it does. there is no magic number for the length. It is whatever length is required to fully utilize the working arc of the leaf spring as it extends and compresses.
    Another fix to springs that tend to invert is to move the shackle hanger.
     
  15. High Desert

    High Desert

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    Thanks for the reversal explanation. didn't mean to Highjack, I use to think that I would do a reversal when I go OME, However I'm not really going to get even near crawling type trails in my rig..So the SR would be overkill, right?
     
  16. loomis

    loomis

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    I recently inverted one of my 2" extended shackles...no major dramas, but hell it made a noise when it happened.:doh: :mad: :censor: ;p ;) :cheers:
     
    Last edited: Apr 24, 2006
  17. nuclearlemon

    nuclearlemon not an addict Moderator

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    you got it on upside down
     
  18. Mace

    Mace rock scientist.. Staff Member s-Moderator

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    Aint those anti inversion shackles???


    ;)
     
  19. Benji

    Benji

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    Ditto those are upside down. Invert your anti-inversion shackles.
     
  20. loomis

    loomis

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    silly question (I ask these all the time, get used to it) but what difference does it make which they they go?

    Are you guys saying that the shackle is upside down (top to bottom) or upside down meaning the triangulated side should be facing the front instead of the back....or both?