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NERO diff problems

Discussion in 'Nero, Big Rock & Fazon' started by DD_ARRMA, May 10, 2018.


    DD_ARRMA New Member

    Feb 28, 2018
    Likes Received:
    Arrma RC's:
    Hi all,

    Greetings from Belgium!

    I used to drive RC cars in my younger years, and picked up the hobby again a few months ago together with my little son. And we are having a blast!
    I'vz had a few breakages on the Nero (which is 7 months old), but nothing serious.
    I broke 2 suspension arms, and a few driveshaft pins, but nothing else!
    Untill now...

    My 3 diffs are out...
    1. REAR:
    The pins of the diff locking ring broke of the ring, and grinded the holes in the diff case.



    2. CENTER:
    The servo of the center diff is doing nothing. No movement, no noise.

    3. FRONT:
    The servo of the front diff is sometimes working, sometimes not.

    I have been reading a lot (but really a lot!) on this forum and the general consensus is that Arrma support is awesome and has a "no questions asked" policy on diff breakages.

    I've sent them an email to see what they can do for me.
    I've sent it directly to the US, since the Belgian reseller is out of stock on the diff servos and locking rings...
    And those things are expensive in Belgium :D

    I didn't knew where to put this post, in the introduction section or here. But since it's mostly about the diffs, I figured it's better in the Nero sections.
    Mods, if needed, feel free to move the thread.

    I will keep you posted on how Arrma support reacts to this ;)
  2. lonee

    lonee Well-Known Member

    Dec 11, 2016
    Likes Received:
    Arrma RC's:
    We had the same Problem. At first the rear Diff of my Big Rock was dead. Reason was defektiv pins and afterwards the servo was broken.
    Actual we have summary 4 bad diffs within 1,1/2 Year. (totally 3 Neros, one Big Rock all with diff brain)
    I modified the pins of the new diff kits (servo plus cage with pins) with much harder pin material. So i could reduce the deformation on the top of the pins and overforcing the servo.
    I was looking for a bit stronger diff servos but I could not find such size here in Germany.

    Regards, lonee
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