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Front Lockers On 3rd gen

Discussion in '3rd Gen. Tacomas (2016-2023)' started by nate_the_reptile, Oct 22, 2017.

  1. Oct 23, 2017 at 7:26 PM
    #41
    Joe23

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    Yes
     
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  2. Nov 25, 2017 at 10:38 AM
    #42
    Cruiser Brothers

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  3. Apr 10, 2020 at 10:43 AM
    #43
    Outdoorsy_Yota

    Outdoorsy_Yota Hella-Known Member

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    i realize this thread is older than all hell.... But is it possible to throw a lunchbox locker in the front on a 3rd gen?
     
  4. Apr 21, 2020 at 11:26 PM
    #44
    ShimStack

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    Yes, there are plenty available. The front diff is the same as the 2nd gen Tacomas, the 8" IFS clamshell.
     
  5. May 5, 2020 at 11:35 AM
    #45
    JDUB-Fabrication

    JDUB-Fabrication Well-Known Member

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    For what its worth, I found this video on youtube. The magnetic taco has an air locker in the front and the cement taco only has crawl control. You can see how each truck handles the exact same obstacles. The front locking Tacoma seems to have way more grip which enables better throttle control I assume. The crawl controlled Tacoma definitely has some traction issues but gets over the terrain just fine. Could be operator or tire based, but I'm guessing that air locker was definitely helping out big time.

    "guess we're getting a locker honey"-favorite part

    https://www.youtube.com/watch?v=-yueI_uErsk
     
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  6. May 5, 2020 at 12:10 PM
    #46
    ShimStack

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    Traction control is great stuff and ATRAC and MTS definitely works and works well. But as good as they are it's still mechanical fact that lockers will always be the device capable of applying the maximum torque to the tire with traction. A locker's ability cannot be beat, it can only be tied.
     
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  7. May 5, 2020 at 12:23 PM
    #47
    ShimStack

    ShimStack Well-Known Member

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    I know this thread is old, but for those that find this in the future.

    Lockers do not force equal traction to both wheels. They guarantee equal speeds. They can bias torque up to 100% and send it to a single wheel. If both wheels have traction the amount each tire gets is a deformations problem and can't be determined by statics. But rest assured you can apply torque up to the limited of what both tires have available together.

    No, this is exactly like a locked diff. A part time (i.e. locked) transfer case sends equal speeds front to rear. The torque, just like a diff locker, can be biased up to 100% front or rear depending on grip front and rear.

    Basically, if you are in 4wd with front and rear locked and one tire has grip and the other three have zero traction then the one wheel with traction will receive 100% of the available torque outputted by the powertrain.
     
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  8. May 5, 2020 at 11:16 PM
    #48
    iptman

    iptman Well-Known Member

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    If all torque goes to 1 wheel, in your example, that means no torque goes to the other 3 right? Does a wheel receiving 0 torque spin? Because if I lock all 3 diffs in my 80 you better believe all 4 wheels spin.

    What you're describing is a Limited Slip Differential and not a locking differential. A locking diff mechanically locks both sides and sends equal torque to both. Traction is irrelivent.
     
    Last edited: May 6, 2020
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  9. May 6, 2020 at 8:02 AM
    #49
    Garab

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    Yeah not really. Most people bothered by the scoop areOR owners just feeding the hype that theyre better than sport and pro owners, but we all know they're actually just secretly jealous they dont have spot to mount a light bar in their hood... the people who actually have a problem with it would have just as much a problem with the no scoop hood. Either way front facing camera fixes all of that percieved flaw nonsense.

    :jellydance:
     
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  10. May 6, 2020 at 8:17 AM
    #50
    therealprotaco

    therealprotaco Always Skeptical

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    I have an ARB in my front, now you can call my truck the CV Eater. Looking at some bombproof RCV axles at this point.
     
  11. May 6, 2020 at 11:05 AM
    #51
    Evomike1

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    Did you find yourself in situations where MTS (nanny systems) was not enough? I realize we all choose different levels of trail and drive different so this is a loaded question... Are you breaking CVs while using front locker for straight ahead traction?

    Thank you!
     
  12. May 6, 2020 at 11:19 AM
    #52
    Outdoorsy_Yota

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    Yup, I'm starting to find that CC really does well on the rocks, but i'm also seeing that a locker would allow for better throttle control... Meh, like anything, its all give-take, right? I was on the fence on whether or not to lock the front and right now, I'm leaning towards leaving it the way it is... What im losing in actual 100% locked wheels, better control, i feel i gain in CC being easier on the drivetrain, save money, and simplicity... IDK... I also want 37's so... shit... LOL
     
  13. May 6, 2020 at 11:23 AM
    #53
    ShimStack

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    Absolutely I am describing a locker and NOT a limited slip. I get that it can be hard to grasp intuitively.

    Fact: An open diff sends equal torque to each wheel at all times. Yes, an open diff.
    Fact: A locked diff sends equal speeds to each wheel at all times. It can bias torque up to 100% at one wheel.

    Yes, if all torque goes to one wheel then the other 3 get none. Yes, a wheel receiving zero torque will not spin. In order for 1 wheel to receive 100% torque it must have traction at the ground capable of applying that torque without slipping. As soon as it slips the torque available at that wheel drops below the total torque threshold and now all wheels begin to get torque and thus spin.
     
    Last edited: May 6, 2020
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  14. May 6, 2020 at 11:50 AM
    #54
    therealprotaco

    therealprotaco Always Skeptical

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    100% finding myself in situations where MTS won't cut it. In fact I very much dislike MTS because there are times where I want throttle and the MTS, which acts like traction control, cuts the throttle out from under me. With regard to snapping CVs it is mostly in hard lock situations in the middle of an obstacle where backing out is not an option, you need the locker for traction to at least one wheel, and you need to saw the wheel back and forth for traction.

    Mostly boulder crawling.
     
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  15. May 6, 2020 at 12:58 PM
    #55
    iptman

    iptman Well-Known Member

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    You're just 100% wrong on this. I gave you an out with the LSD thing but I guess you'd rather dig your hole a little deeper.

    For your viewing pleasure. 3:08 if you don't want to wait. And this is from TGS, not some schmuck on the interwebs. There are tons of other videos on youtube as well showing 1 wheel up in the air with lockers on and guess what...it's spinning. Maybe join a club that actually wheels their junk and you'd see this for yourself.

     
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  16. May 6, 2020 at 1:13 PM
    #56
    Jowett

    Jowett Well-Known Member

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    I have a beefier inner CV, a 105mm UZJ100 Land Cruiser unit, the stub is 30 spline and it plugs right into the 8" diff. Need to figure out the shafts and outer joints.

    IMG_3408.jpg
    IMG_3407.jpg
     
  17. May 6, 2020 at 2:33 PM
    #57
    ShimStack

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    Lol, you guys here crack me up. Simply put that guy is wrong and he has the same intuition most people have and it's why people struggle with the concept. Mainly understanding the interaction between speed, torque, and traction.

    Read actual technical information on how differentials operate and you'll see I'm correct. You can start with wikipedia but it's described correctly in other technical articles all over the internet. I've yet to see a YouTube expert get all the concepts right.
     
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  18. May 6, 2020 at 2:38 PM
    #58
    therealprotaco

    therealprotaco Always Skeptical

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    The real problem here is you are both talking about the same thing in different ways. Yes 100% of available torque will go to the wheel with traction, but that is only because that wheel has the traction. Realistically its probably like 99.5% (or some made up number around there) as it does take some amount of torque to spin that other wheel.
     
  19. May 6, 2020 at 2:48 PM
    #59
    JoeCOVA

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    so reading through this, maybe you guys are talking past one another.

    With a locker, maximum torque can be applied equally to both wheels through the driveshaft regardless of wheel speed, traction, etc.
     
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  20. May 6, 2020 at 2:49 PM
    #60
    iptman

    iptman Well-Known Member

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    Maybe but I don't think so. Saying no power/torque goes to a wheel that doesn't have traction is like saying a Mike Tyson punch has no power until it lands.

    Take a 2x4 ATV which literally has a solid axle wheel to wheel, no differential at all, just a sprocket on the axle. Would you say that if you had one wheel on the ground and the other in the air that half the power/torque was not being transmitted to the lifted wheel? That's absurd. This is the exact situation with an axle with a locked differential.
     

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