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  #46  
Old April 5th, 2019, 08:22
RCP Phx RCP Phx is offline
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Re: Another death wobble thread

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Originally Posted by xjrick94 View Post
the stabilizer brackets were supposed to arrive yesterday but they didn't show. I found my trackbar to be loose so i tightened the jam nut and i was able to now go 50 before I got deathwobble. I then had a friend turn the wheel while i looked under and the trackbar brace was loose on the passenger side. I tightened that down as well and deathwobble is almost completely gone. It's not so violent but it does move around a bit if i hit a bump at 55 or so. This weekend I plan to rotate my tires and see how it does. I plan on running the stabilizer anyway but i want to ensure that i fix the issue before installing it. I'm also going to replace my balljoints in the near future since that is practically the only part in my front end that i haven't replaced.

I'm just amazed that my trackbar brace was loose and my trackbar adjustment jam nut was loose all this time and my stock steering with stabilizer was hiding the issue.
Who's trackbar do you have?
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  #47  
Old April 5th, 2019, 08:43
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xjrick94 xjrick94 is offline
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Re: Another death wobble thread

Rubicon express HD. I also have their brace.
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  #48  
Old April 5th, 2019, 08:50
RCP Phx RCP Phx is offline
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Re: Another death wobble thread

That's the same set-up I've been running for almost 20yrs w/o a issue. Are you getting the joint centered before tightening?
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  #49  
Old April 5th, 2019, 09:03
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xjrick94 xjrick94 is offline
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Re: Another death wobble thread

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Originally Posted by RCP Phx View Post
That's the same set-up I've been running for almost 20yrs w/o a issue. Are you getting the joint centered before tightening?
I didn't pay attention to the joint so probably not. I'll loosen it and make sure that it's centered tonight.

thanks.
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  #50  
Old April 5th, 2019, 21:22
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xjrick94 xjrick94 is offline
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Re: Another death wobble thread

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Originally Posted by RCP Phx View Post
That's the same set-up I've been running for almost 20yrs w/o a issue. Are you getting the joint centered before tightening?
I had to turn it out a full turn to get the joint centered. I just centered it and installed my stabilizer but Iíve been drinking and itís late. Iíll test drive it tomorrow.
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  #51  
Old April 6th, 2019, 06:02
RCP Phx RCP Phx is offline
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Re: Another death wobble thread

????? , I wasn't talking about "centering" the axle. I was referring to keeping the joint square in the frame bracket.
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  #52  
Old April 9th, 2019, 17:53
notamechanic notamechanic is offline
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Re: Another death wobble thread

After checking things out again I noticed about 1/4" side to side play in my rough country track bar bushing. Rubicon express TB is on the way. Hopefully that will cure my problem.
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  #53  
Old April 9th, 2019, 19:41
RCP Phx RCP Phx is offline
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Re: Another death wobble thread

I hope you bought the HD unit and bracket.
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  #54  
Old April 9th, 2019, 21:14
notamechanic notamechanic is offline
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Re: Another death wobble thread

I got the 1660 super flex tb and bracket
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  #55  
Old April 10th, 2019, 07:52
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xjrick94 xjrick94 is offline
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Re: Another death wobble thread

I drove mine roughly 40 miles and it did ok on the freeway. Didn't feel great but no deathwobble. I then decided to rotate my tires since i hadn't done so in a while and i don't get death wobble but i have a constant vibration at over 45. I'm going to a tire shop tomorrow to have my front tires re balanced.
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  #56  
Old April 10th, 2019, 22:06
notamechanic notamechanic is offline
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Re: Another death wobble thread

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Originally Posted by xjrick94 View Post
I drove mine roughly 40 miles and it did ok on the freeway. Didn't feel great but no deathwobble. I then decided to rotate my tires since i hadn't done so in a while and i don't get death wobble but i have a constant vibration at over 45. I'm going to a tire shop tomorrow to have my front tires re balanced.
Rad. good stuff to be driving highway speed.

My TB came and I received the wrong part so I'll be another few days until I know if this solved my issue. Pretty confident it will though. I took my old TB off and aside from the bushing being worn out, the axle bracket hole was wallowed out which gave around 1/8" play. If the DW continues after all this I might lose it
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  #57  
Old April 12th, 2019, 06:18
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cherokeecrawler cherokeecrawler is offline
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Re: Another death wobble thread

For the people that don't know, which is a lot, caster angle is at which angle the farthest point of the tires are when turning. If that makes sense. So if you should your lower control arms forward, it would make the tires turn more towards the top, thus lowering the chance of the tires wanting to bounce back and forth=deathwobble. I had bad deathwobble at about 65, especially when i had absolutely nothing in my jeep. Shoved my lower fixed arms as far forward as i could and put some weight in it and it was completely gone. This may not be your problem, but as some other people said, diffidently worth looking at a good bit.
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  #58  
Old April 12th, 2019, 09:53
RCP Phx RCP Phx is offline
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Re: Another death wobble thread

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Originally Posted by cherokeecrawler View Post
For the people that don't know, which is a lot, caster angle is at which angle the farthest point of the tires are when turning. If that makes sense. So if you should your lower control arms forward, it would make the tires turn more towards the top, thus lowering the chance of the tires wanting to bounce back and forth=deathwobble. I had bad deathwobble at about 65, especially when i had absolutely nothing in my jeep. Shoved my lower fixed arms as far forward as i could and put some weight in it and it was completely gone. This may not be your problem, but as some other people said, diffidently worth looking at a good bit.
More than likely your DW will be back. If you didn't find the cause and repair it then you only masked it for right now. Castor alone(unless grossly out of adjustment) rarely causes DW.
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  #59  
Old April 13th, 2019, 09:16
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lazyxj lazyxj is offline
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Re: Another death wobble thread

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Originally Posted by cherokeecrawler View Post
I had bad deathwobble at about 65, especially when i had absolutely nothing in my jeep. Shoved my lower fixed arms as far forward as i could and put some weight in it and it was completely gone. This may not be your problem, but as some other people said, diffidently worth looking at a good bit.
Adjusting the LCAs to be longer, without checking the caster or the front driveshaft's u-joint pinion angle, is recipe for failure.
The added caster helps stabilize the suspension, but as pointed out, it's a band-aid, there is something(s) loose.
Too much front pinion angle can lead to vibs and pinion bearing damage, it's supposed to set at between 1/2 and 1 degree.
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  #60  
Old April 16th, 2019, 08:16
Rockwood Rockwood is offline
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Re: Another death wobble thread

Quote:
Originally Posted by cherokeecrawler View Post
For the people that don't know, which is a lot, caster angle is at which angle the farthest point of the tires are when turning. If that makes sense. So if you should your lower control arms forward, it would make the tires turn more towards the top, thus lowering the chance of the tires wanting to bounce back and forth=deathwobble. I had bad deathwobble at about 65, especially when i had absolutely nothing in my jeep. Shoved my lower fixed arms as far forward as i could and put some weight in it and it was completely gone. This may not be your problem, but as some other people said, diffidently worth looking at a good bit.
Caster cures wandering, lazy and overly light steering. It also helps handling by increasing camber curve assuming scrub radius isn't too great.

Death wobble is something loose allowing the axle or wheels to oscillate under an otherwise stable and straight vehicle. More caster will just make it easier to control, but if something is loose and causing DW, the caster will just mask the problem until you've really wallered something out.
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