 Bump Steer, How to tell...? |
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| jim_hoyland |
 Aug 26 2009, 05:48 PM
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#1
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Get that VIN ?  Group: Members Posts: 9,698 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California 
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Is the test for bump steer driving over a speed bump straight on or at an angle. I don't get any noticable pulling when taking the speed bump straight on. Just want to get the test situation straight, any input will be appreciated.
Car is lowered about 50% |
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| orange914 |
Aug 26 2009, 10:35 PM
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#2
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http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
looking at the picture and reading rich's comment on it binding somewhere on him made me wander why there is a rack shim kit but i've never seen a tie rod end relocating kit. i would think that would be better. my mustang bump steer mod. was at the tie rod end and not only did it correct bump steer but repositioned the tie rod slightly to correct o.e. ackerman angle. is there a tie rod bump steer for the 914?
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| r_towle |
Aug 26 2009, 10:39 PM
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#3
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Custom Member Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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QUOTE(orange914 @ Aug 27 2009, 12:35 AM)  looking at the picture and reading rich's comment on it binding somewhere on him made me wander why there is a rack shim kit but i've never seen a tie rod end relocating kit. i would think that would be better. my mustang bump steer mod. was at the tie rod end and not only did it correct bump steer but repositioned the tie rod slightly to correct o.e. ackerman angle. is there a tie rod bump steer for the 914? yup Elephant racing or tarretts, I cant remember who...but yes there is a tie rod offset solution. Tie rods always need to be at an angle Rich |
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| SirAndy |
Aug 26 2009, 10:47 PM
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#4
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Resident German Group: Admin Posts: 42,207 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(r_towle @ Aug 26 2009, 08:39 PM) Tie rods always need to be at an angle (IMG:style_emoticons/default/confused24.gif) |
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| orange914 |
Aug 26 2009, 11:14 PM
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#5
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http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
QUOTE(SirAndy @ Aug 26 2009, 09:47 PM) QUOTE(r_towle @ Aug 26 2009, 08:39 PM) Tie rods always need to be at an angle (IMG:style_emoticons/default/confused24.gif) (IMG:style_emoticons/default/agree.gif) as "stewteral" put it "you will be CREATING bump-steer issues as the Radius of travel of the suspension arm and that of the Tie-Rod become increasingly different." this may not be spacifically refering to the tie rod only, but i think it shows how the tie rod radius of travel is effected. it is less extreem or exagerated when its parallel. it kind of splits the differance, if that makes any sense |
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Posts in this topic
jim_hoyland Bump Steer Aug 26 2009, 05:48 PM
ConeDodger Jim,
I have never heard of a test for bump steer b... Aug 26 2009, 07:20 PM underthetire If you get a "that feels kinda funny" ma... Aug 26 2009, 09:05 PM r_towle Jim,
Take a pic of your car, on the ground.
Lay do... Aug 26 2009, 09:10 PM
jim_hoyland
Jim,
Take a pic of your car, on the ground.
Lay d... Aug 26 2009, 09:13 PM
orange914
Post that so we can see the whole a-arm.
RIch
l... Aug 26 2009, 09:20 PM orange914
Is the test for bump steer driving over a speed b... Aug 26 2009, 09:14 PM jim_hoyland Pics: Aug 26 2009, 09:27 PM r_towle your fine.
I will never suggest to anyone to put ... Aug 26 2009, 09:38 PM jim_hoyland
your fine.
I will never suggest to anyone to put... Aug 26 2009, 09:40 PM ArtechnikA
It binds things in other places...namely the uppe... Aug 27 2009, 07:54 PM jaxdream
It binds things in other places...namely the upp... Aug 27 2009, 08:37 PM stewteral
Is the test for bump steer driving over a speed b... Aug 26 2009, 09:55 PM J P Stein
I hope all my work can help you understand what... Aug 27 2009, 03:17 PM turboman808 Wouldn't you idealy like the tie rod to be par... Aug 26 2009, 10:13 PM orange914 i really don't have real world experiance with... Aug 26 2009, 10:17 PM jmill There is a bump steer test. It's alot easier ... Aug 27 2009, 08:16 AM jim_hoyland Thanks Terry-That is a good explanation. Am I corr... Aug 27 2009, 08:25 AM Cevan From my own experience, my car had pretty signific... Aug 27 2009, 10:17 AM gopack Elephant racing makes the tie rod end solution. L... Aug 27 2009, 12:57 PM SirAndy
Elephant racing makes the tie rod end solution.
... Aug 27 2009, 01:01 PM turboman808 I really thought my car had this and just needed s... Aug 27 2009, 01:28 PM jim_hoyland Does raising the spindles or using the ER bump ste... Aug 27 2009, 02:59 PM SirAndy
Does raising the spindles or using the ER bump st... Aug 27 2009, 03:02 PM turboman808
Does raising the spindles or using the ER bump st... Aug 27 2009, 03:13 PM J P Stein Angles..we gots em and it works. I'm at 4-3/4 ... Aug 27 2009, 06:33 PM SirAndy
Angles..we gots em and it works.
Yeah, but your ... Aug 27 2009, 06:40 PM J P Stein I have 2 1/2 inches of front shock travel & us... Aug 27 2009, 06:55 PM cwpeden You need to account for the pivot points of the ti... Aug 27 2009, 07:10 PM J P Stein
You need to account for the pivot points of the t... Aug 27 2009, 07:20 PM dw914er This is what is on clubrsx from my searches while ... Aug 27 2009, 08:58 PM jim_hoyland
This is what is on clubrsx from my searches while... Aug 27 2009, 09:48 PM dw914er Then that's probably why...
when you drop a c... Aug 28 2009, 12:33 AM SLITS HP Books - "How to Make Your Car Handle... Aug 28 2009, 08:17 AM jmill I like "Tune to Win" and "Engineer ... Aug 28 2009, 09:58 AM turboman808 Wrote this long thing and then just made a diagram... Aug 28 2009, 10:46 AM jim_hoyland
Wrote this long thing and then just made a diagra... Aug 28 2009, 11:23 AM turboman808 Well keep in mind I haven't got a clue what I ... Aug 28 2009, 12:18 PM Borderline
Well keep in mind I haven't got a clue what I... Aug 28 2009, 02:52 PM |
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