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Author Topic:   Bump Steer
mod2_x
Dirt Full Roller

Total posts: 38
posted December 29, 2004 01:01 PM  
I have been reading a little about bump steer and have a ?. I run a metric clip and a stock center link. The way I understand it is that the inner tie rod end should fall in line with the lower A arm pivot point and the outer inline with the line from the top upper and lower ball joint. Now looking at my car the inner tie rod end is about 3 or more inches in past the lower A arm pivot. Not good from what I understand. Question is, is there a center link that would be the same overall length but would have the inner tie rod mount closer to where it needs to be. At a quick clance it looks like it would almost have to be where the idler arm is mounted. Any help would be grateful.

Dustejr73
Dirt Maniac

Total posts: 177
posted December 29, 2004 02:12 PM  
i believe that the 84 camaro draglink is your answer. i have just ordered one for my metric and i am told that it moves the tierod holes out further and keeps the same overall length.

mod2_x
Dirt Full Roller

Total posts: 38
posted December 29, 2004 02:17 PM  
Thanks.
Were did you order it from and how much?
Does it move both inners or just one. The only one that is off is the right side.

gksmith94
Dirt Newbie

Total posts: 2
posted December 29, 2004 03:28 PM  

The part number is DS1049. They are available at any part store.

GRTWallbanger
Dirt Maniac

Total posts: 196
posted January 01, 2005 07:37 PM  
Does this center link work without changing the idler arm or steering box arm?How do you get the inner tie rod all the way out in line with the lower control arm bolt?That would be a very short tie-rod?(I think)And how do you move the outer tie rod end other than change spindles?

BEL67RACER
Dirt Roller

Total posts: 10
posted January 03, 2005 10:28 AM  

To those of you that have used this set-up I'm a little confused. This morning, I work at a parts store, I pulled a DS909 metric center link, and a DS1049 camaro link and the inner tie rod ends are futher apart as described, but the overall lenght is about 1" longer. Are there other parts/modifications needed in this swap? I was always told the idle arm and steering arm needed to be paralel(?), which they couldn't be in this case. I have seen flexiflyer sells a kit that includes center link, lower ball joints, and a idler arm, could they be doing the same type of thing?? Some more info would be great, thanks for now.

wissota3x
Dirt Forum Racer

Total posts: 86
posted January 05, 2005 08:48 AM  
You have to modify the idler arm to get camaro center link to work properly. The idler arm stem that mounts to the frame has to be bent the opposite way and turned a 180 degrees ,then you have to notch the frame for the nuckel to clear.This will widen out the idler so that it parallels the steering arm . The down side to all of this is that the center link won't be centered in the chassis with the idler and the steering arm straight back.We modified this whole set-up a different way that works awsome.You will have to PM me for this . It might bend the rules in some areas.

jws
Dirt Maniac

Total posts: 115
posted January 07, 2005 10:20 AM  
You are going to a lot of work that may not be necessary if you are able to run the 5/8 heims on the outer tie rod. I have bumped a couple of metric clip mods and have always been able to get decent bump steer just by adjusting the outer tie rod spacers. It depends on your camber change curve how much spacer you will need, but it usually runs from zero to about an 1.5". You never know until you get your hands on a bumpsteer gauge and get to work, you can't tell much by just looking.

Dustejr73
Dirt Maniac

Total posts: 177
posted January 07, 2005 01:58 PM  
with this setup i went back to the stock metric draglink. i have the bumpsteer spacers installed and have no bump steer. i am also running nova lowers, pinto spindles, and chevelle idler and pitman arms. everything seems to work fine with this setup. you have to shim the idler a bit to make it work.

wissota3x
Dirt Forum Racer

Total posts: 86
posted January 09, 2005 09:24 AM  
Dustejr73, I agree ,it is possible to get some good bump with the stock drag link.The Camaro drag link with some modification brings the inner tie rod closer to the inner pivot point of the lower A frame.Just makes the bump alot more forgiving to deal with.
I don't think there is a perfect set-up for bump unless your driving an Indy car or the like.
I also think that we put way to much importance on bump.I've seen dirt cars steering parts that have been bent way out of shape that just kick a** and the driver doesn't know any different.
For allot of us just knowing everything is close to being right takes away another variable.

Dustejr73
Dirt Maniac

Total posts: 177
posted January 09, 2005 10:31 AM  
you are right about bumpsteer. with these 4bar style dirt cars you have the left front up in the air a lot of the time. if we were running on pavement it would be a much bigger deal. i am trying to use the strongest, cheapest, and most available parts for me.

orange2mod
Dirt Maniac

Total posts: 113
posted January 09, 2005 10:58 AM  
2 weeks of work and planning and trying different parts on an open wheel car to get the bump as close to perfect as possible.
Start of race: Go into the 1st turn and the guy next to you runs into the left front and there goes all the bump and toe.
Theres a limit on how far to go considering all the circumstances. Get it close and drive the car!



Dustejr73
Dirt Maniac

Total posts: 177
posted January 09, 2005 02:21 PM  
ha ha ha, that is the truest statement i have ever read on this forum!!!!!!!

you spend all winter tweaking and massaging parts only to ruin it all in the first corner of the first race!!

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