Death Wobble

Post by **shmoken875** » Mon Oct 25, 2010 7:27 pm

BadnewsCJ wrote:Rant aren't you running short arms with large amounts of lift in the front of your cherokee without persistent death wobble? Granted I guess the geometry is slightly different, but I do feel like Jake is running a fairly typical TJ set up.

The addition of .75" of lift and new tires does seem awfully suspicious. I have Will's angle finder give me a call so you can check your caster.

Shhhh nobody is supposed to know about my stoopid setup.

5-6" of lift up front on solid non adjustable short arms. I get a little now and again mostly due to the nipples wearing flat inside of the control arm bushing sleeves. Worst I had was due to a bad ball joint, previous little issues were taken care of with south main autos laser alighnment.

97JEEPTJ · Post by **97JEEPTJ** » Mon Oct 25, 2010 7:33 pm

Any more details on what south main adjusted? What'd you pay?

Post by **jonesy** » Mon Oct 25, 2010 7:56 pm

im guessing its a combination of slightly worn TREs or DREs plus a slightly sloppy track bar bushing.

get under your jeep and have a trustworthy friend (not randy or randy's friend) saw the wheel back and forth at varying speeds ... you will see something move.

Post by **jonesy** » Mon Oct 25, 2010 7:57 pm

or stop being a vagina, put your big girl panties on, and deal with it.

lol.

Post by **shmoken875** » Mon Oct 25, 2010 8:31 pm

97JEEPTJ wrote:Any more details on what south main adjusted? What'd you pay?

Even though I measured toe multiple times I still had it wrong. No clue on the price, it was 3-4 years ago.

Post by **BadAssEddie** » Mon Oct 25, 2010 8:45 pm

jonesy wrote:or stop being a vagina, put your big girl panties on, and deal with it.

lol.

I'm Alec, nice to meet you :lol2:

Post by **BadnewsCJ** » Mon Oct 25, 2010 9:16 pm

97JEEPTJ wrote:Yeah, can I use a bay of moon tower garage wednesday morning?

Well my shit doesn't move, so if Hippie doesn't need the other side then of course. What time ya thinking? I'll be out there around 11.

Post by **BadnewsCJ** » Mon Oct 25, 2010 9:17 pm

jonesy wrote:or stop being a vagina, put your big girl panties on, and deal with it.

lol.

I prefer to drive faster than 30mph all the way back from Potts, but that's just me.

Post by **Brett** » Mon Oct 25, 2010 9:38 pm

yes, the non-mechanically minded old dude is going to chime in.

(please note the paragraphs)

I recently have had some front end shimmy (I call it that because it was definitely not DW). I found that the front upper and lower control arms were not torqued to proper specs. Once I tightened them to spec, the problem is better, but still not cured.

The factory tj service manual indicates a number of things for front end shimy starting with worn wheel bearings. It also mentions alignment, leaking steering damper, and loose or worn steering or suspension components. Just something to think about. Hope this helps and good luck.

Brett

Post by **Arya Ebrahimi** » Mon Oct 25, 2010 10:54 pm

shmoken875 wrote:
BadnewsCJ wrote:Rant aren't you running short arms with large amounts of lift in the front of your cherokee without persistent death wobble? Granted I guess the geometry is slightly different, but I do feel like Jake is running a fairly typical TJ set up.

The addition of .75" of lift and new tires does seem awfully suspicious. I have Will's angle finder give me a call so you can check your caster.
Shhhh nobody is supposed to know about my stoopid setup.

5-6" of lift up front on solid non adjustable short arms. I get a little now and again mostly due to the nipples wearing flat inside of the control arm bushing sleeves. Worst I had was due to a bad ball joint, previous little issues were taken care of with south main autos laser alighnment.

Rant, are your arms stock? or are they fixed length aftermarket arms that are longer than stock to compensate for the altered steering geometry a lift causes?

I don't really care if he has stock arms, adjustable arms, fixed arms, or chunks of wood, in this case, it's the proper length that matters(that's what she said

).

Post by **BadAssEddie** » Mon Oct 25, 2010 10:58 pm

Arya Ebrahimi wrote:I don't really care if he has stock arms, adjustable arms, fixed arms, or chunks of wood, in this case, it's the proper length that matters(that's what she said ).

Ary to the rescue!

97JEEPTJ · Post by **97JEEPTJ** » Mon Oct 25, 2010 11:03 pm

Arya, I agree with the length of control arms. (However, I do have positive caster still.

)

Rant, do you also have aftermarket front uppers? (adjustable or not?)

Post by **Arya Ebrahimi** » Mon Oct 25, 2010 11:10 pm

97JEEPTJ wrote: (However, I do have positive caster still. )

If that's the case, then there's your problem

Your caster should be negative!

97JEEPTJ · Post by **97JEEPTJ** » Mon Oct 25, 2010 11:16 pm

What, that shit isn't supposed to be pointed to the ground?

Forgive my mistake, I do in fact have negative caster. See what I can do about measuring it wednesday morning. I'll post the results.

Rant, do you also have an adjustable front track bar?

Post by **willhf1011** » Mon Oct 25, 2010 11:18 pm

Arya Ebrahimi wrote:
97JEEPTJ wrote: (However, I do have positive caster still. )
If that's the case, then there's your problem

Your caster should be negative!

I think you have that all backwards Ary. Positive caster is when the steering axis intersects the road in front of the tire contact patch.