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Why do Duece and a halfs have front to back steering?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 84_Chevy_K10, Mar 27, 2002.

  1. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Do they just not expect those springs on the front of a Duece to flex or what? Front to back steering? What gives?

    I noticed this a few weeks ago at my National Guard drill...I had to ride in one of those things (between the Dueces a the CUCV pickups rolling around can you imagine what I'm thinking the whole time I'm at drill?)
     
  2. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Well all this talk of bumpsteer and DW and lane wandering....why doesn't a duece have this problem?
     
  3. Jeff427

    Jeff427 1/2 ton status

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    We (my cousin Chris and I) have 2 1/2 ton steering on Mudzilla, because it was the only gearbox we could find that had long enough travel to steer the 2 1/2 ton axle from lock to lock.
     
  4. DieselDan

    DieselDan 1/2 ton status

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    Well you've probably caught the thread on bumpsteer and crossover by now. As long as the (front to rear) drag link is relatively parallel and equal in length to the springs/pivots, bump steer is minimal. Combine this with the fact that M35s are by no means flex monsters. Did you notice the lack of shocks on the rear of that duece?
     
  5. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Yeah there are about 40 leaves in the back so shocks are pretty much worthless.

    I would think though that a heavily loaded duece might flex some, and I doubt bumpsteer would be good for a vehicle that large.

    The army could afford whatever they want, so why didn't they want crossover on their duece?
     
  6. m j

    m j 1/2 ton status

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    they do bumpsteer tons.
    every heavy truck I have seen has front back steering.
    saw a Mack with front back steering on each front knuckle last year.
    didnt get to really check it out appeared to be hydraulic linked
    think of the stress a fully loaded big truck steering will see trying to turn the tire.
    makes sense to have it push and pull with the frame and spring rather then trying to spread the frame rails apart
     
  7. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I see the whole spreading the frame issue.

    They bumpsteer, even with that many leaves up front?
     
  8. K10ANDYKHAMNIC

    K10ANDYKHAMNIC 1/2 ton status

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    i doubt they do , ill ask my dad tomorrow he has 2 of em /forums/images/icons/smile.gif army deuces and a halfs that is ....
     
  9. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I know they do. I'm in the National Guard.
     
  10. K10ANDYKHAMNIC

    K10ANDYKHAMNIC 1/2 ton status

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    then why the heck did u ask if they had bumpsteer ??
     
  11. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I didn't. I asked why they had front to back steering if the Army can contract whoever they want for the trucks and design them however they want.
     
  12. K10ANDYKHAMNIC

    K10ANDYKHAMNIC 1/2 ton status

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    "They bumpsteer, even with that many leaves up front? "

    oh u didnt huh ? see above quote........by you
     
  13. K10ANDYKHAMNIC

    K10ANDYKHAMNIC 1/2 ton status

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    "They bumpsteer, even with that many leaves up front? "

    oh u didnt huh ? see above quote........by you
     
  14. Pugsley

    Pugsley 1/2 ton status

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    Every fire truck chassis (custom) I've ever seen is front to back - and they are relatively light-duty. I can see what you are talking about too - even a smallish tire like a 9.00R20 would be alot of leverage against the framerails.
     
  15. DieselDan

    DieselDan 1/2 ton status

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    'Not trying to flame you, or anyone else BUT you're talking about a truck that was manufactured back in the early sixties. Not counting the ESP (Extended Service Program M109A4s) I've got eight dueces in my motor pool right now. The oldest was REBUILT in 1966! These trucks are Manual Steering, Manual Tranny, Single Circuit Brakes, etc. The technology was not "state of the art" even when they were built. Do you really think Uncle Sam gave a hoot about bump steer?

    Don't get my wrong, I love the Duece for what it is (I'm not at all impressed with the M900 series 5tons or the FMTV series). The DOD (or War Department back then) doesn't build race trucks, They CONTRACT tactical movers. I'll shut up now before I step on my soap box and REALLY get going!
     
  16. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Sorry...I see how you were misled now. I don't know if they bumpsteer, I've never drove one. I do know that they have front to back steering, that's what I was saying when I said, "I know they do."
     
  17. K10ANDYKHAMNIC

    K10ANDYKHAMNIC 1/2 ton status

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    well fine u big misleader ! /forums/images/icons/wink.gif yeah i know they have that, i was talking about bumpsteer ...
     
  18. K10ANDYKHAMNIC

    K10ANDYKHAMNIC 1/2 ton status

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    well fine u big misleader ! /forums/images/icons/wink.gif yeah i know they have that, i was talking about bumpsteer ...
     
  19. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Well screw you, you big double poster. /forums/images/icons/laugh.gif
     
  20. 84_Chevy_K10

    84_Chevy_K10 Banned

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    It has nothing to do with "race trucks". Military vehicles are designed to survive in combat. I am sure having one that steers itself isn't all that wonderful.

    But, you're right. They do the job quite well. 1 circuit brakes? OH NO!! We're all going to die!!!
     

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