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I remember reading epics thread where he installed a new steering stablizer and also posted a video. I have been paying more attention and have been noticing my truck has pretty bad and upsetting bumpsteer at times. if you run over a larger than normal seam in the road with a little bit of wheel in the truck it really upsets the thing. I was pulling my dads rhino on a single axle trailer the other day on I 215, those that know the area know this is an old concrete highway with some bumps and heavy seams. hit one and the truck really snapped on me. looked back and the correction I had to make caused my trailer to do several BIG TIME sways. I know my truck didn't always do this. I am wondering if the factory steering stabilzers that they put on our trucks SUCK?? if after nearly 20k miles they start to go bad?? I can't imagine ford putting out a truck that handled the bumps so poorly. keep in mind my truck has stock tires and no lift. its just the way it left the factory.
I pretty much plan un doing the steering stabilizer upgrade that Epic shows, the steering feels a little too easy to me.
Remember if you are towing with alot of tongue weight without air bags in the back, your front end is light. Making the front end of the truck even feel worst in this "bump steering" as you referred to it as.
On ramps and ramps that you use to switch from one interstate and another that usually involve bridges with big bumps are the worst case scenario for this. Happens with just about any vehicle, lateral g force combined with road conditions that make the vehicle lighter will make it turn and feel out of shape. I will agree that the heavy pickup will do this poorly. My lighter trailers will bounce a little sideways too. I don't know if a steering stabilizer will do any good on this specific issue. It's really just wheels coming off the ground after a bump, with very little weight on the pavement the lateral g force let's it move sideways a bit before the weight returns and the tires grab hold to stop the sideways movement.
We have a lot of unsprung weight, the mass of the axles/wheels has a lot of inertia, takes more time for the mass to make it's movement. Axles get kicked up in the air on a bump, once the suspension absorbs the inertia and can get the mass to go back down, truck feels solid again. I think the spring rates are just too soft.
On ramps and ramps that you use to switch from one interstate and another that usually involve bridges with big bumps are the worst case scenario for this. Happens with just about any vehicle, lateral g force combined with road conditions that make the vehicle lighter will make it turn and feel out of shape. I will agree that the heavy pickup will do this poorly. My lighter trailers will bounce a little sideways too. I don't know if a steering stabilizer will do any good on this specific issue. It's really just wheels coming off the ground after a bump, with very little weight on the pavement the lateral g force let's it move sideways a bit before the weight returns and the tires grab hold to stop the sideways movement.
We have a lot of unsprung weight, the mass of the axles/wheels has a lot of inertia, takes more time for the mass to make it's movement. Axles get kicked up in the air on a bump, once the suspension absorbs the inertia and can get the mass to go back down, truck feels solid again. I think the spring rates are just too soft.
I have driven pretty much everything with 4 wheels one time or another. including working for 3 different companies with fleets of at least 30 vehicles each. I have driven and owned more vehicles than most people, including having a business where we rebuilt insurance totals back in the mid 90's. I have also driven diesels since '95 mostly dodges. I don't recall having a vehicle with this much bumpsteer. I also pull a trailer almost everyday for my business, it has about 800#'s of ball weight. I would image the trailer hauling the rhino likely had less than 200#.
Ok, I did not intend to question your perspective, I do intend to question the effectiveness of a steering stabilizer to remedy the problem. I also intend to state that the spring rates on these '11 trucks is too soft which allows the axles to bounce more than in the past. I attempted to outline what is actually happening with the suspension in the specific circumstance you outlined, which has very little to do with the steering box.
But, I've been wrong many times.....................
RUSCHEJJ I know what Cummings is talking about, as a lot of us on this forum do. Most of us have had previous trucks, dodges, fords, whatnots and we all agree, the bumpsteer on this my is worse by far than any previous my going back to 2001 since I have been buying powerstrokes. Furthermore, all your technobabble may be accurate, but it is still happening. I have an 06 450 4wd CC w/ 12' steak body. These are notorious for having a light front end and it never happened to this truck.
In fact, thanx for reminding me, I am ordering a set of stering dampers tonight lest the death wobble creeps up on me.....
Are people with snow plow prep package having more issues with bumpsteer or less. Supposed to be one up on the spring selected, accordig to the catalog. But if the springs are way to soft to begin with, the plus one won't help much...just a thought...
The only time I notice bumpsteer on my 2005 was with the 5ver on the back, and I didn't run air bags, I probably had between 1 to inches of sag in rear end when loaded. The truck would sit near level or slightly down on the back
I'm just gonna get the SS kit, and put airbags on this one. Wanna make the drive out west next year less stressful on my shoulders and neck!!
I may have gotten lucky, or not enough miles on mine yet, but I do not have a bump-steer issue. The truck does have a light feel in the front on pavement, as in a small tendency to wonder.
I've always defined bump steer as having the wheel pulled out of you hand when you nail a large rock heading down a trail, my truck has felt fine over some pretty nasty/rocky trails.
There have been some comments out there about loose or defective ball joints. I have tested mine and they seem fine. No play and the nuts are tight. The stabilizer did the trick for me but I will also keep my radar up for ball joint issues.
Are people with snow plow prep package having more issues with bumpsteer or less. Supposed to be one up on the spring selected, accordig to the catalog. But if the springs are way to soft to begin with, the plus one won't help much...just a thought...
The only time I notice bumpsteer on my 2005 was with the 5ver on the back, and I didn't run air bags, I probably had between 1 to inches of sag in rear end when loaded. The truck would sit near level or slightly down on the back
I'm just gonna get the SS kit, and put airbags on this one. Wanna make the drive out west next year less stressful on my shoulders and neck!!
I was going to ask this exact question. I have the snow prep package and my truck rides like it is on rails. I have heard Epic and others talk about a light feeling wheel - got none of that. What I do get is an occasional wheel hop in the back when turning on even pavement at slow speeds. I attributed this to no weight in the back. I also am starting to hear my left front shock klunking over bumps. But when it comes to uneven highways, solid is the only way I can describe it.
Would be good to know if the snow plow prep package does have an impact on this.
is there a decent quality drop in unit to replace the stock setup?? if its not a ton of money I would just replace it myself. that is one thing I miss about my '06 dodge that truck handled like a sports car in comparison, even with wore out ball joints. way faster steering ratio, and the truck didn't get so upset driving on gravel roads at high rates of speed. it felt in the road, not on top of it. I wonder if ford knows something and purposely went with the super slow steering box speed because if that was speed up, then we would really have a bumpsteer problem. the effect is the truck feels like a land yacht and not very nimble.
is there a decent quality drop in unit to replace the stock setup?? if its not a ton of money I would just replace it myself. that is one thing I miss about my '06 dodge that truck handled like a sports car in comparison, even with wore out ball joints. way faster steering ratio, and the truck didn't get so upset driving on gravel roads at high rates of speed. it felt in the road, not on top of it. I wonder if ford knows something and purposely went with the super slow steering box speed because if that was speed up, then we would really have a bumpsteer problem. the effect is the truck feels like a land yacht and not very nimble.
There may be truth in that. I have always said that dodges have a better suspension when it come to ride quality. and, maybe we start a little poll. For all who comment. For example:
Do you have bumpsteer aka Death wobble Yes
Do you have snow plow prep? Yes,
Front tire preasure? 65
did you add any lift? yes, 2 1/2"
Tires, stock or aftermarket? stock
BTW, I only have this happen when 1 tire hits a good size pothole or bumb and the other does not.
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