: Does a incorect Ackerman angle


HeyBeerMan
06-05-2002, 05:59 AM
have anything to do with "Deathwobble"???

Gozuki
06-05-2002, 07:04 AM
No, but caster does.

Lloyd
06-05-2002, 07:06 AM
No. Ackermann effect causes all the tires, in a turn, to roll on circles with a common center. It's most pronounced in tight turns, obviously. Now theoretically an extra short length between the balljoint/kingpin axis and the tie rod end will make "death wobble" worse because the short lever multiplies the slop in the steering, relative to a longer one. In practice, if your front end is that loose it'll shake anyway and you'd better just spring for new parts while you still can.

hy_desert_4wheeler
06-05-2002, 07:08 AM
Originally posted by HeyBeerMan
have anything to do with "Deathwobble"???

Since you as a question like this I have to assume you do not even know what an ackerman angle is... The answer is NO.. the only time ackerman angle comes into play is when you are turning.. It is the relationship between the tires where the tire on the inside of the turn turns sharper than the outside tire..ie: if you are turning to the right then the right side tire will turn sharper than the left side tire and if you are turning left then the left side tire is turning sharper than the right..
For your death wobble look at your steering components.. make sure your alignment is correct,and that their is not excess play in your tierods, balljoints,and that your shocks and wheel bearings are in good shape..

foley
06-05-2002, 07:17 AM
it could if you drive in circles all day and your incorrect ackerman has caused enough tire scrub to make them ride funny :flipoff2:

seriously though, no.

Only thing not mentioned above is tire balance, if you are running huge meats at speed, especially on small rims (like a 42 R 15 as opposed to a 37 R 16.5 or R17) where you have a lot of sidewall, if they are out of balance it could cause you a problem.

I would not really suspect tire balance as a cause of "death wobble", as it will generally just be an annoying vibration, but it could well accelerate wear in the steering components, ball joints, bushings, wheel bearings, etc; and this wear could be the cause of your "death wobble"

HeyBeerMan
06-05-2002, 08:27 AM
Originally posted by hy_desert_4wheeler


Since you as a question like this I have to assume you do not even know what an ackerman angle is...



For you to assume anything about me based on a one sentance question. Just proves that you are a dickhead!

But thanks for the info! I am looking into moving the tierod to the rear of my 60. If I do that I have a freind that can utilize my existing arms and 1-1/4 tierod. I know the A-angle is off. And did not want to pass along a design problem. With moving my tierod behind the diff I should be able to get the A-Angle pretty damm close.

LAME
06-05-2002, 08:33 AM
Originally posted by HeyBeerMan




For you to assume anything about me based on a one sentance question. Just proves that you are a dickhead!


Turns out I am a dickhead, also. :flipoff2:

Check this out for info on steering stuff (http://home.tiscali.be/heremanss/) ..yeah it is for RC cars, but it still relates to real rigs.

mj
06-05-2002, 08:56 AM
Death wobble is not always related to worn steering components.
several of us have had it with everything, yes EVERYTHING, new and alignment specs well within acceptable specs.

bigdude
06-05-2002, 09:23 AM
Originally posted by HeyBeerMan




For you to assume anything about me based on a one sentance question. Just proves that you are a dickhead!

But thanks for the info! I am looking into moving the tierod to the rear of my 60. If I do that I have a freind that can utilize my existing arms and 1-1/4 tierod. I know the A-angle is off. And did not want to pass along a design problem. With moving my tierod behind the diff I should be able to get the A-Angle pretty damm close.

You only need one new arm to put your tie rod behind the diff. Then you just flip the other around backwards. Also why can you not re-use the tie-rod?

Don't assume I'm a d!ckhead either, I'm more of an a$$hole

HeyBeerMan
06-05-2002, 09:32 AM
Originally posted by bigdude


You only need one new arm to put your tie rod behind the diff. Then you just flip the other around backwards. Also why can you not re-use the tie-rod?

Don't assume I'm a d!ckhead either, I'm more of an a$$hole

The new arms will be of a differnt design and angle to clear everything. The tie rod will end up being shorter. I will be making the new tie rod out of 1-1/2" CroMo.

Plus this way I'm not hacking up a already matched setup.

LAME thanks for the link...Great info!

bigdude
06-05-2002, 09:37 AM
Originally posted by HeyBeerMan


The new arms will be of a differnt design and angle to clear everything. The tie rod will end up being shorter. I will be making the new tie rod out of 1-1/2" CroMo.

Plus this way I'm not hacking up a already matched setup.

LAME thanks for the link...Great info!

Gotcha