Looks like Wranglers arent the only Jeep product that can get Death Wobble! - Jeep Wrangler Forum
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Old 07-23-2010, 02:12 PM   #1
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Looks like Wranglers arent the only Jeep product that can get Death Wobble!


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Old 07-23-2010, 02:15 PM   #2
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Lol...

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Old 07-23-2010, 02:17 PM   #3
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Definitely needs a steering dampener.
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Old 07-23-2010, 02:40 PM   #4
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Mabye some new u-joints.
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Old 07-23-2010, 03:12 PM   #5
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looks like you're missing a trac bar
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Old 07-23-2010, 03:22 PM   #6
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No No No...its just a unbalanced tire....steering dampers are band aids for bigger problems.
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Old 07-23-2010, 07:10 PM   #7
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that's a good example to learn from. the caster if you were to measure it, is 0.

when you lift a jeep, you lose caster. the lower the caster, the higher probability of Death Wobble. shopping buggies do the same thing and also have 0 caster set.

that's why it's important to get an alignment after a lift. a lot of folks think if the steering wheel is straight, and there's no left or right pulling, it's aligned. then when they hit a bump at 50 and they lose control, slam into a guardrail, endo over it and fall 20 stories off a bridge exploding the jeep when it impacts a school bus filled with children passing by below...

I forgot where I was taking this...get an alignment. lift or tire size increase. ALWAYS
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Old 07-24-2010, 09:09 PM   #8
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Except on the TJ with mild lifts (under 5 or 6"...something like that), I believe the caster is non-adjustable...only the toe-in can be adjusted. If you have a higher lift with adjustable control arms, then the caster (or is it camber?) is adjustable.
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Old 07-25-2010, 07:58 AM   #9
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Quote:
Originally Posted by s3nt3nc3d View Post
Except on the TJ with mild lifts (under 5 or 6"...something like that), I believe the caster is non-adjustable...only the toe-in can be adjusted. If you have a higher lift with adjustable control arms, then the caster (or is it camber?) is adjustable.
camber can only be adjusted with offset balljoints. camber should never go out though. if it does, you've got a bent axle or broken tie rod, balljoint, etc.

you're right, usually mild lifts don't reduce caster enough to enduce DW. but even a mild lift, means bigger tires, and that leads to too much toe in, also a known culprit of bumpsteer and DW. if caster is already messed up before the lift, it's 50/50 it'll get worse. caster is the major player in why stock jeeps don't ride like lifted ones. the caster angles are different.

generally at 5", or 6" of lift, you have no caster so you're forced to deal with it but different CA's can be purchased for small lifts to correct bumpsteer, DW, or handling issues brought on by too low of caster. adjustables are overkillish though with mild lifts

caster can always be adjusted. this is how we bring in pinion and driveshaft angles. thing is though the more lift, the tighter the wiggle room is. a stock jeep can have 4, 5, 6 degrees of caster. lifted, depending on height, now the max could be 3 degrees. if you have DW, adjustables are now needed as the stock arms won't let you adjust over 3 degrees, but the adjustable arms can get you back to 4 or 5 or whatever you're after.
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Old 07-26-2010, 01:53 PM   #10
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Old 07-26-2010, 02:00 PM   #11
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Quote:
Originally Posted by GroundHawg View Post
that's why it's important to get an alignment after a lift. a lot of folks think if the steering wheel is straight, and there's no left or right pulling, it's aligned. then when they hit a bump at 50 and they lose control, slam into a guardrail, endo over it and fall 20 stories off a bridge exploding the jeep when it impacts a school bus filled with children passing by below...

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