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When A-Trac shows Front Locker how it is done

Discussion in '5th Gen 4Runners (2010-2024)' started by Yotaholic, Apr 1, 2024.

  1. Apr 1, 2024 at 8:12 PM
    #1
    Yotaholic

    Yotaholic [OP] New Member

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    Last edited: Apr 1, 2024
    Stoney Ranger, kevinRR, BS67 and 3 others like this.
  2. Apr 1, 2024 at 8:47 PM
    #2
    Stoney Ranger

    Stoney Ranger New Member

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    Agreed. ATRAC has gotten me out of most situations. The winch got me out of the other 2. Having said that, a locker would not have been much use when I was turtled on a rock. For what I paid for a winch/bumper, I cannot justify the cost of a locker. I'm sure there are when moments it would be useful, but for where I go and what I do, taller tires (255's or 285's) are #1 on the mod list. A rear locker is on the list, but it is near the bottom. 'cause A-TRAC just plain works. Press the magic button and go.
     
  3. Apr 1, 2024 at 8:54 PM
    #3
    whippersnapper02

    whippersnapper02 New Member

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    My 2010 Tacoma had it. If I had a front locker, I wouldn’t have lost my momentum at the simple obstacle. It’s good but not close to an actual locker.

    I locked in the rear at some point which is why it stopped transferring power because it deactivated over a certain wheel speed with the locker engaged.

    https://youtu.be/rNXFv6u-kyU?si=HNYaPpb_0vvJ95re
     
    Last edited: Apr 1, 2024
  4. Apr 1, 2024 at 9:00 PM
    #4
    Harringbr99

    Harringbr99 New Member

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    Textbook demonstration of how well A-TRAC works with consistent and determined throttle input. You really worked to sho good comparisons hitting exactly the same lines, with the same momentum and throttle each time.

    I see some of these videos where the person wants to say A-TRAC is hobbled and only for overland bros and then goes out and spins a little and immediately takes off the throttle.
    For those of us relying on A-TRAC to get back home safely your video shows the full power of that magic button.
     
  5. Apr 1, 2024 at 9:21 PM
    #5
    Yotaholic

    Yotaholic [OP] New Member

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    I was worried that my big tires might have affected A-Trac's stock calibration from Toyota, similar to how messed up my speedometer is. But so far so good, A-Trac has been doing its thing beautifully. I air down, switch to 4Lo and turn on A-Trac. That's how I have been rolling on dozens of trails.
     
    Last edited: Apr 1, 2024
    kevinRR and Harringbr99 like this.
  6. Apr 3, 2024 at 5:02 PM
    #6
    Yotaholic

    Yotaholic [OP] New Member

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    "Determined throttle"

    https://youtu.be/nAcZjXjYHrs?feature=shared
     
  7. Apr 8, 2024 at 9:06 AM
    #7
    GrimJeeper91

    GrimJeeper91 New Member

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    I had the opportunity to use ATRAC for the first time on a week long trip in the Utah back country and I wasn't very impressed. Particularly since many have professed that you don't need a locker when you have ATRAC. I was crossing deep ruts that crossed the trail at an angle (on a slight incline). The right front and left rear were both fully extended and barely touching. I intentionally drove into the ruts without any traction devices and of course I came to a stop (got stuck). I backed off about three feet, engaged ATRAC and eased forward only to come to a stop again. I let the ATRAC try to work it out for about ten seconds before I couldn't stand the noises any more and stopped it. Once again I backed off, turned ATRAC off and engaged the rear locker. With the rear locker engaged I rolled through the ruts effortlessly and noise free. I know people love ATRAC but no computer controlled traction technology is better than a full locker.
     
    Captain Spalding likes this.
  8. Apr 8, 2024 at 9:26 AM
    #8
    semprenissart

    semprenissart Mèfi

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    @GrimJeeper91 i agree with you. While ATRAC is great for the vehicles that don’t have lockers, and ATRAC will get you through a lot more places that no ATRAC, it is still inferior than a real diff lock system. Also not as smooth and needs to be a little more agressive.
    There are different ways to go through hard obstacles depending on how smooth and gracefully you want to do it. From smoothest to least: lockers, ATRAC, momentum (aka get out of the way)
     

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