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post #1 of (permalink) Old 03-25-2001, 07:52 PM Thread Starter
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death wobble(steering)

i took my worthless POS out today after addressing yesterdays "issues" and i have discovered that anytime i let off the gas at all, i get a major death wobble in the front end.. enough to violently shake the jeep and throw the tires back and forth. my toe was set outward too far, so i cranked it in( a little too far) and now its worse...my caster is good. could it be the toe?? any other ideas?

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post #2 of (permalink) Old 03-25-2001, 08:27 PM
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Re: death wobble(steering)

I don't know what mods you have on your Jeep, but have you checked your axle shims, u-bolts, and leaf springs (center pins, bushings, and clamps). I would also give your engine and transmission mounts a one over. Unless your toe was way out I don't think it would cause a wobble. I don't think that it is an alignment problem.

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post #3 of (permalink) Old 03-25-2001, 08:48 PM
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Re: death wobble(steering)

Death wobble is usually caused by too much scrub. It may be exemplified by loose parts and tire balance. The amount of scrub is determined by the offset of your wheels. Looking from the front, draw a line through both of your ball joints and see where it contacts the ground. Now measure from the center of your tire, to that line. This distance is called scrub. This should not be any more than about 1 inch. Changing your offset, or even the width of your wheels, may bring your scrub back into specs. If you re-balance your wheels, change or add a steering stabilizer, replace your ball joints and tie rod ends, and tighten up your wheel bearings, you may cover it up. But the correct way to eliminate it is to correct your backspacing or offset and correct your scrub radius.

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post #4 of (permalink) Old 03-25-2001, 08:59 PM
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Re: death wobble(steering)

Ball joints have done it to me before.

post #5 of (permalink) Old 03-25-2001, 09:16 PM
 
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Re: death wobble(steering)

good explination dorfs,
hey elusive, does it happen with your hummer wheels/tires also?

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post #6 of (permalink) Old 03-25-2001, 09:19 PM
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Re: death wobble(steering)

I've also had it when a tire has 30 lbs. of mud in it.

post #7 of (permalink) Old 03-25-2001, 09:20 PM Thread Starter
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Re: death wobble(steering)

lets see.. good stuff, thanks..but....
i had this with my hummer rims, and now with my new beadlocks.. and i used different tires also.. they came balanced, and the other tires were balanced.... this is a dana 60 front axle, there are no ball joints.i have king pins.. all my tie rod ends are new as of today.
as for the srcub... well.. there is just no way there is going to be 1" there. it's not ever close to 1" with anything i have..my ford is about 6" with stock rims...

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post #8 of (permalink) Old 03-26-2001, 09:40 AM
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Re: death wobble(steering)

Chris, what air pressure are you running? I get a little wobble with lower air pressure. When I had my steering stabilizer off the tires would start to wobble around 35 mph then smooth out at 45. With the stabilizer on I can see the tires wobbling, but no effect at the steering wheel. I have since added hydraulic assist and do not feel the wobble, but still see the tires slightly wobbling. I know I do have a couple of bent rims.
Did you re-balance your tires/rims? I would also check the rims only for being straight. I know they are new, but ???? One last thought, Swap front to rear and see if they also do the shake. Good luck, Ricky...seeya...

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post #9 of (permalink) Old 03-26-2001, 10:18 AM
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Re: death wobble(steering)

Hey Elusive - I've been there, and I really think it's too much offset as well. I have a set of rimes that has great offset for my narrow track axles, but I always get the "death wobble" with them. My other rims need more, but no wobble...

However, if you git it with the Hummer rims (an I thought I read that they had like alot of NEGATIVE offset, then I don't know what to tell you. I do think these guys are onto something with the "scrub" thing though - I just know I have 2 sets of wheels and tires, one does it and one doesn't...

How's your camber? I had real bad camber one Summer and that may have contributed because as I recall, That's the Summer I had these problems too...

Chuck Hadley
post #10 of (permalink) Old 03-26-2001, 11:53 AM
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Re: death wobble(steering)

All good advise! I would definatly check those u-bolts though.AS for the ram assist, like they say> It's the absolute best stabilizer you'll ever get!! Plus it'll turn that damn 60 with 38's like it isnt there!!! Dont work for [censored] when the pump craps out though!!! BELIEVE ME !!!

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