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Discussion Starter #1
can someone explain this to me? i have seen a trac bar with just the heim joint end at the diff and the other end just bolted to the bracket that was welded to the frame crossmember. why and where do i need a shackle....can i have pics? i would think a shackle would let the axle wrap still. thanks <IMG SRC="smilies/usa.gif" border="0">
 

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If you put two heims, or bushings (I'm using the one's from an old torque rod) at the axle end, THEN you use a shackle at the other end. Go look at the one that Sam's advertises, and you'll see why.
 

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<IMG width=446 height=300 SRC="http://www.pirate4x4.com/ubb/uploads/axlewrap.jpg">

I run the shackle because it allows for the forward backward motion when the springs flatten and arch. I run it off the horse shoe crossmember straight down to a hiem joint which allows for the twisting motion. NO AXLE WRAP.
 

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Discussion Starter #4
so i put the shackle in the horseshoe bracket and let it hang DOWN <IMG SRC="smilies/confused.gif" border="0"> then run my bar from the bottom of the shackle to the heim on the diff? <IMG SRC="smilies/usa.gif" border="0">
 

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Discussion Starter #5
by the way, i'm just using a piece of 1 1/4" pipe with ends welded on, NOT the trianglar setup you guys are showing.....thanks
 

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that's the set up that uses the shackle.I had a traight tube with hiems on each end but it seemed to not work as much as I'd like so I made this one. BTW to mount the shackle I made a "T" out of tubing and put bushings in the top of the "T" which the bolt went through, then stuffed the bottom part of the "T" though the center hole in the x-member then welded it. With the current set up the force is pushing down not pulling back like yours, that's why the shackle works on mine.
 

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I prefer tension shackle to a compression (for this setup), that way it could only reverse if your backing up, if it some how could. IOW, shackle up, not down.
 

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Originally posted by NE-RokToy:
<STRONG>If your not using an A shaped bar there is no need for a shackle!</STRONG>
if you want it to not mess with the flex you do. granted if it is mounted in the center it won't mater as much but alot of people mount them to one side or the other and the shackle allows the springs to follow thier normal arc as the flex and compress. with out the shackle they fight each other.
 

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My anti-wrap-bar:

Cut Torque rod bracket off front axle.
Grind, form, weld, torque rod bracket to rear pumpkin.
Cut torque rod in half.
Thread one end of torque rod 5/8 fine.
Weld length of tubing to other end of torque rod.
Weld big 5/8 fine threaded nuts together and then to the other end of tubing.
Spin threaded torque rod into nuts and adjust for length.
cut frame torque rod bracket off front of truck. (It comes off for cross over any way.)
Make a bracket that goes around the horsecollar using front t.r. bracket for mounting (easy and effective).
Bolt bracket to horse collar.
Attach bar.
Go wheeling.
Suspension still flexes like mad. DOES NOT BIND. Twists on the threads.

<IMG width=354 height=598 SRC="http://www.pirate4x4.com/ubb/uploads/Diff bracket.jpg">

<IMG width=435 height=443 SRC="http://www.pirate4x4.com/ubb/uploads/Horsecollar bracket.jpg">

[ 10-29-2001: Message edited by: Wheelie_Pete ]
 

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Flexing with the anti-wrap bar in place.

<IMG width=617 height=376 SRC="http://www.pirate4x4.com/ubb/uploads/Dock Flex2.jpg">
 

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In case anyone's wondering about my horsecollar x-member..I tacked the front of it to the crossmember, then drilled the holes, bolted the back plate down tight, then welded the top plate on. This way, the tension of the bolts isn't fighting the top plate which acts soley for re-inforcing the two bracket plates. there are three bolts through the bracket and crossmember.
 

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Originally posted by high5:
<STRONG>if you want it to not mess with the flex you do. granted if it is mounted in the center it won't mater as much but alot of people mount them to one side or the other and the shackle allows the springs to follow thier normal arc as the flex and compress. with out the shackle they fight each other.</STRONG>
I was talking about if you just have a single bar, if you just run a single bar with a shackle it will be completly usless and achevie nothing.
 

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Does the shackle design help with anti-squat or whatever it is called (step on the gas and rear lifts up)?

I have a single bar and no probs with wrap or articulation but it lifts a lot..



 

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Originally posted by Brandon:
<STRONG>Does the shackle design help with anti-squat or whatever it is called (step on the gas and rear lifts up)?

I have a single bar and no probs with wrap or articulation but it lifts a lot..
</STRONG>
I think that the rear end lifting is a sign of pinion travel.
 

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someone with the shackle setup and 3/4 or dual shackle - do you still get the lift on throttle effect?
 

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i have a set up similar to bud built.
except the shackle is the other way.
and i do get the rise when i gas it.
the only way i can explain it is the energy that would normally torque the pinion up is transfered from the rear end to the shackle, and since the bar does not allow the axle to torque, that force presses down on the axle and esentially pushes the truck up.
does that make sense brandon.
 

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That is how a traction bar is supposed to operate. It keeps the pinion angle from changing and helps transfer the "twisting" energy to the wheels.
 
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