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Old 04-19-2014, 06:46 PM
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Anyone have DW AFTER installing a trackbar bracket?

Has anyone experiences death wobble after reinforcing the frame side trackbar bracket with a JKS, Synergy or other trackbar bracket?

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hbski

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Old 04-19-2014, 06:48 PM   #2
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are you asking because this happened to you or because you are concerned it may happen to you?

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Old 04-19-2014, 07:28 PM
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I'm asking, because after reviewing a death wobble video and examining the front suspension while installing my 3" lift, it seems apparent that the bend in the front trackbar coupled with the large drop on the frame side track bar bracket are the major culprits in DW. I already have a much stiffer JKS front trackbar to recenter the front axle and am thinking of reinforcing the trackbar bracket to remove the other culprit in the DW harmonic dance.

Even before I lifted my 2014 JKUR, i realized that the front suspension and steering interaction is quite spongy for lack of a better word. Road inputs (bumps mostly) can be felt through the steering wheel quite a bit, but then my other DD is a RAM 3500 which doesn't offer much road feedback. With the JKUR though it seems a bit more than just feedback....more like the spongy-ness...ie something flexing up there.

I know that many report worn front suspension components as the DW culprits, but I'm thinking if you add a stiffer trackbar and reinforce the frame side trackbar bracket, particularly with a cross frame solution like the JKS bracket, then it would be VERY difficult to initiate DW even with some worn components.
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Old 04-19-2014, 07:59 PM   #4
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that OEM bracket has been a pain in my a** for over a year, I would reinforce it.
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Old 04-19-2014, 08:04 PM   #5
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Can only help. Stock brackets though. Raising or lowering at the mounting points can't be done without a drag link flip or DPA.
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Old 04-19-2014, 10:07 PM   #6
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The track bar joints and anything associated are the culprit of DW in large number of cases.
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Old 04-20-2014, 11:51 AM
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Quote:
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The track bar joints and anything associated are the culprit of DW in large number of cases.
I agree that warn components can initiate DW, but it is clear from watching a DW video that it is a natural frequency resonance driven by the forward motion of the vehicle.

Loose items tend to develop friction as they slip and would actually dissipate energy not propagate it. The video displays a lot of energy being expended in resonance of the front suspension/axle as well as MUCH larger displacements than just worn components alone could develop.

That's why the question about anyone experiencing it after frame bracket reinforcement. This type of harmonic response can be designed out for MOST real world scenarios.
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Old 04-20-2014, 12:24 PM   #8
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Quote:
Originally Posted by spinlock View Post
The track bar joints and anything associated are the culprit of DW in large number of cases.
This ^
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Old 04-20-2014, 06:40 PM
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Originally Posted by hbski View Post
I agree that warn components can initiate DW, but it is clear from watching a DW video that it is a natural frequency resonance driven by the forward motion of the vehicle.

Loose items tend to develop friction as they slip and would actually dissipate energy not propagate it. The video displays a lot of energy being expended in resonance of the front suspension/axle as well as MUCH larger displacements than just worn components alone could develop.

That's why the question about anyone experiencing it after frame bracket reinforcement. This type of harmonic response can be designed out for MOST real world scenarios.
worn components....LOL, I must have been thinking about winches with the other half of my brain at the time
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Old 04-20-2014, 07:20 PM   #10
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Fixed

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