Bump Steer

[brian hood]

Can anyone explain to me what bump steer is?

[power_hungry]

I hadn't head the term before, but here is a link to an explanation:

http://www.quadratec.com/jeep_knowledgebase/article-68.htm

[BobT-47P15]

I've heard of a "bum steer" ....

[pflaming]

A 'bum steer' in my vocabulary is information that is incorrect. He told me that Jeeps were always made by Mopar is incorrect information, or a 'bum steer'.

The dual word is consistent, a 'bum steer' does not exist. It is a double negative, like 'sky-blue pink'. Some call them oxymorans.

[Andydodge]

Bump steer is when the cars tie rods go thru a different arc to that of the suspension, effectively trying to shorten/lengthen the tierods, which as they are set by the nuts on the tierod, means that as they can't be "shortened/lengthened" results in them then pushing/pulling the steering arms, giving you a "steering" effect.........Bump Steer.........andyd.

[Plymouthy Adams]

bump steer is a condition caused by suspension travel either up or down changing the toe in or toe out of the front wheels....to eliminate bump steer your centerline of steering travel (be it the main link or a R&P unit) should be parallel with the steering arms at cars' rest position full weight on the wheels (for those making the changes do ensure you suspension is at full weigth as it will eventually be driven)

APPLIED TO OUR OLD CARS...as a lot of people on here are putting on lowering uprights to drop their car profile...the neccessary bending of the steering is to prevent this condition..addition of the R&P kits makes two major mount points critical also to prevent bumpsteer..

If per say you changed the steering geometry a bit by lowering the spindle on the uprights and did not correct the condition by bending the steering arms, most likely any significant bump you should hit, especially railroad crossings, the cars front suspension would start ocillating from mild to wild depending on the travel of the suspension up or down on the bump you just hit...

for those that experience this condition and not have modified the suspension do inspect the tie rod ends for excessive play..for those cars with an idler arm..this is a prime suspect..

Edited January 18, 2010 by Tim Adams

[LAKOTA169]

I thought it was the answer to this question.

Your driving down a country road in Wyoming. You come to a bridge, but a steer is blocking your way. How do you get across the bridge?

Answer: Bump Steer

[greg g]

Nearly found out the hard way what the "Live Stock at Large" signs meant!!!!

[Vazlov1949]

Bum steer = steer with a bad leg. Slows down the cattle drive. Will probably wind up as dinner with beans some night soon.

[brian hood]

ok thanks