Why do so many trucks "crab walk" down the road?

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Nightfall
Nightfall Posts: 10,067
edited August 2019 in The Clubhouse
It's always trucks and SUV's. What causes this? I saw one today, that's why I bring it up, but I see it all the time. Could just be my perception but especially with Fords. Very rarely is it a car.

Examples

https://www.youtube.com/watch?v=THtV80yjILw

https://i.kinja-img.com/gawker-media/image/upload/s--xaUO2XMN--/c_scale,fl_progressive,q_80,w_800/bfdl8alkje9lkasfzzjp.mp4
afterburnt wrote: »
They didn't speak a word of English, they were from South Carolina.

Village Idiot of Club Polk
Post edited by Nightfall on
«1

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  • txcoastal1
    txcoastal1 Posts: 13,132
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    It's because they've been overloaded to many times
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  • motorhead43026
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    Leaf spring bushings in Ford's wear and this allows the axel to steer the vehicle.

    Basically a severe alignment problem. Common on leaf spring vehicles as they age.

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  • Nightfall
    Nightfall Posts: 10,067
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    Leaf spring bushings in Ford's wear and this allows the axel to steer the vehicle.

    Basically a severe alignment problem. Common on leaf spring vehicles as they age.

    Wouldn't you be fighting the rear axle trying to steer itself in the steering wheel? You'd think these guys would be tired of that and replacing tires every 10k that replacing a couple of rubber bushings would be the cheaper route.
    afterburnt wrote: »
    They didn't speak a word of English, they were from South Carolina.

    Village Idiot of Club Polk
  • FestYboy
    FestYboy Posts: 3,861
    edited August 2019
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    ^ actually all it does is allow one rear wheel to move, changing one side's length (from front wheel to rear wheel). This does not change the axle's alignment. So barring any oddities in the front steering angles (i.e. change in total toe through the steering sweep), there will be no abnormal tire wear, and the only thing the driver may notice is the steering wheel is off center.
  • mdaudioguy
    mdaudioguy Posts: 5,165
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    FYI, I'm not offended, but I wanted to relay something. When Ken was the mod here, I got a video deleted that had swearing in it. Maybe it was just him, or maybe the company didn't want content like that on here, idk. On the other hand, if they really cared, we'd have a mod here, so who knows?
  • Nightfall
    Nightfall Posts: 10,067
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    I edited it out.
    afterburnt wrote: »
    They didn't speak a word of English, they were from South Carolina.

    Village Idiot of Club Polk
  • OleBoot
    OleBoot Posts: 2,108
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    Sounds like a Jeff Foxworthy joke .... You're a redneck if your truck crabs down the street and you don't even notice.
  • mdaudioguy
    mdaudioguy Posts: 5,165
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    Nightfall wrote: »
    I edited it out.

    Well...
    I don't know if my Ford does that. Got it probably at least third-hand and I can tell some panels have been painted, so I'm sure there was an accident at some point. Since I never follow myself, I may never know.
  • pitdogg2
    pitdogg2 Posts: 24,560
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    mdaudioguy wrote: »
    Nightfall wrote: »
    I edited it out.

    Well...
    I don't know if my Ford does that. Got it probably at least third-hand and I can tell some panels have been painted, so I'm sure there was an accident at some point. Since I never follow myself, I may never know.

    what you can't look in the rearview mirror and see it....

    :p
  • jawhog
    jawhog Posts: 444
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    FestYboy wrote: »
    ^ actually all it does is allow one rear wheel to move, changing one side's length (from front wheel to rear wheel). This does not change the axle's alignment. So barring any oddities in the front steering angles (i.e. change in total toe through the steering sweep), there will be no abnormal tire wear, and the only thing the driver may notice is the steering wheel is off center.

    I didn’t totally follow the technicalities of this answer, but I think what OP is referring to is when you literally see the driver having to steer back to the other side of the lane every 10 seconds. So the driver definitely is noticing. I have always wondered this too. I always assumed it was work vehicles badly in need of alignment with no one home to take care of it.
  • mdaudioguy
    mdaudioguy Posts: 5,165
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    pitdogg2 wrote: »
    mdaudioguy wrote: »
    Nightfall wrote: »
    I edited it out.

    Well...
    I don't know if my Ford does that. Got it probably at least third-hand and I can tell some panels have been painted, so I'm sure there was an accident at some point. Since I never follow myself, I may never know.

    what you can't look in the rearview mirror and see it....

    :p

    Pretty sure I could drop it into drive and just run behind it. I'll let y'all know how that goes.
  • FestYboy
    FestYboy Posts: 3,861
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    jawhog wrote: »
    FestYboy wrote: »
    ^ actually all it does is allow one rear wheel to move, changing one side's length (from front wheel to rear wheel). This does not change the axle's alignment. So barring any oddities in the front steering angles (i.e. change in total toe through the steering sweep), there will be no abnormal tire wear, and the only thing the driver may notice is the steering wheel is off center.

    I didn’t totally follow the technicalities of this answer, but I think what OP is referring to is when you literally see the driver having to steer back to the other side of the lane every 10 seconds. So the driver definitely is noticing. I have always wondered this too. I always assumed it was work vehicles badly in need of alignment with no one home to take care of it.

    Therein lies the steering oddities line... I'd be willing to bet regardless of the crab walking, the front end is out of wack.
  • verb
    verb Posts: 10,176
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    Interesting. In my experience we call it Dog Tracking. Usually requires a 4 wheel alignment at a minimum. If it still persists, then yes something is damaged or worn out in the suspension.
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  • Viking64
    Viking64 Posts: 6,679
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    verb wrote: »
    Interesting. In my experience we call it Dog Tracking. Usually requires a 4 wheel alignment at a minimum. If it still persists, then yes something is damaged or worn out in the suspension.

    Now I want to go to the dog track and rescue all of the greyhounds! :o
  • nooshinjohn
    nooshinjohn Posts: 25,095
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    A bent frame will do it as well. Wrecked truck are cheap at auction, and easy to throw a new bed onto it and call it a day.
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  • Viking64
    Viking64 Posts: 6,679
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    A bent frame will do it as well. Wrecked truck are cheap at auction, and easy to throw a new bed onto it and call it a day.

    lz2fgbpj5w0f.jpg
  • BlueFox
    BlueFox Posts: 15,251
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    A freight company in India?
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  • motorhead43026
    motorhead43026 Posts: 3,892
    edited August 2019
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    I had a 72 Plymouth Duster that crab walked. It did not pull or wear tires as a result. It just rode down the road sideways. If I remember correctly the steering was like 180 degrees off center. It was a leaf spring car. I hated that thing
    2 channel: Anthem 225 Integrated amp; Parasound Ztuner; TechnicsTT SL1350; Vincent PHO-8 phono pre; Marantz CD6005 spinner; Polk SDA2BTL's; LAT International speaker cables, ZU Mission IC's and power cables all into a PS Audio Dectet Power center.

    Other; M10 series II, M7C's, Hafler XL600 amp, RB-980BX, Parasound HCA-1500 amp , P5 preamp, all in storage. All vintage Polk have had crossover rebuilds and tweeter upgrades.

    The best way to predict the future is to invent it.

    It is imperative that we recognize that an opinion is not a fact.

    Imagine making politics your entire personality.
  • monepolk
    monepolk Posts: 1,140
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    ^ Yeah I think it was a design flaw on those. I saw quite a few of those.
  • pitdogg2
    pitdogg2 Posts: 24,560
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    BlueFox wrote: »
    A freight company in India?

    Nairobi
  • billbillw
    billbillw Posts: 6,185
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    I tend to see it on full size vans a lot, especially the Fords. Most of the time, I see funny looking front wheel alignment (camber) and figure it was in some sort of wreck.
    For rig details, see my profile. Nothing here anymore...
  • sucks2beme
    sucks2beme Posts: 5,557
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    No one every gives up on a truck.
    If it starts up and runs, somebody will be driving it.
    Backyard rebuilds happen all the time. Look at all the "rebuilt"
    tittle status vehicles on craigslist. I had my son's old Mustang
    turn up in Florida in an impound lot. It had been totaled 3 years before.
    And guess what? I was the last registered owner!
    Note: NEVER trust anyone with a trade in or insurance total.
    I've had toll violations on vehicles pop up. In Texas there's a form
    send in to tell the state you no longer own it.
    There's a whole segment of society that drives with
    no license, insurance, or any legal status what so ever.
    "The legitimate powers of government extend to such acts only as are injurious to others. But it does me no injury for my neighbour to say there are twenty gods, or no god. It neither picks my pocket nor breaks my leg." --Thomas Jefferson
  • sucks2beme
    sucks2beme Posts: 5,557
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    63svaor2ou55.jpg
    This guy has taken a lot of shot over his used truck the dealer auctioned off
    without scraping off the logo. Appears ISIS likes Toyota dependability.
    "The legitimate powers of government extend to such acts only as are injurious to others. But it does me no injury for my neighbour to say there are twenty gods, or no god. It neither picks my pocket nor breaks my leg." --Thomas Jefferson
  • mhardy6647
    mhardy6647 Posts: 33,037
    edited August 2019
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    mdaudioguy wrote: »
    pitdogg2 wrote: »
    mdaudioguy wrote: »
    Nightfall wrote: »
    I edited it out.

    Well...
    I don't know if my Ford does that. Got it probably at least third-hand and I can tell some panels have been painted, so I'm sure there was an accident at some point. Since I never follow myself, I may never know.

    what you can't look in the rearview mirror and see it....

    :p

    Pretty sure I could drop it into drive and just run behind it. I'll let y'all know how that goes.

    This is one of the most amusing things I've ever read on the whole, complete, en-tire interwebz.

    Well played, sir. Well played.

    :)

    sucks2beme wrote: »
    No one every gives up on a truck.
    If it starts up and runs, somebody will be driving it.
    ...

    That does help explain my Taco(ma).
  • pitdogg2
    pitdogg2 Posts: 24,560
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    sucks2beme wrote: »
    63svaor2ou55.jpg
    This guy has taken a lot of shot over his used truck the dealer auctioned off
    without scraping off the logo. Appears ISIS likes Toyota dependability.

    well that is one way to clear drains..
  • motorstereo
    motorstereo Posts: 2,049
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    Back in the day a broken center bolt from a nasty curb hop would do that. I'm wondering if they have centerbolts in vehicles anymore? Or have they gone the way of the frozen kingpin to?
  • DaveHo
    DaveHo Posts: 3,480
    edited August 2019
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    billbillw wrote: »
    ...Ford...

    And, there's your answer. >:)
  • Nightfall
    Nightfall Posts: 10,067
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    DaveHo wrote: »
    billbillw wrote: »
    ...Ford...

    And, there's your answer. >:)

    Fracker only runs downhill
    afterburnt wrote: »
    They didn't speak a word of English, they were from South Carolina.

    Village Idiot of Club Polk
  • nooshinjohn
    nooshinjohn Posts: 25,095
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    Effed over repaired Dodge...
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  • Viking64
    Viking64 Posts: 6,679
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    Flown Over River & Dropped