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How to shim your Arrma diff

Discussion in 'Chassis & Drivetrain' started by WoodiE, Dec 19, 2017.

  1. WoodiE

    WoodiE Kind of good admin
    Staff Member

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    This is something we get asked a lot on the forums and nearly every single time the answer to those threads are to watch this video. So as suggested, I created a sticky thread for this very question.

    We can also use this thread to have a "one place to go" for this information.



    Enjoy!
     
    Trapper and Jerry-rigged like this.
  2. deadair

    deadair Active Member

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    I know I posted this in another thread but after reading different threads/youtube vids, I think this would be a good place for everyone to see this question and answer.

    Do you treat all 3 diffs the same?
     
  3. Jerry-rigged

    Jerry-rigged Well-Known Member

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    For the 6S machines -
     
  4. Jerry-rigged

    Jerry-rigged Well-Known Member

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    Links to shims -
    For the internal shims -
    Mugen Seiki Differential Washer Set X6/X6T/M-Spec
    https://www.towerhobbies.com/cgi-bin/wti0001p?&I=LXJAM6
    that Mugen set is often sold out.

    For the external shims -
    Tekno RC Differential Shim 13x16x.1 EB48 (10)
    https://www.towerhobbies.com/cgi-bin/wti0001p?&W=003058064&I=LXDWDG&P=K

    Some Protec 3.5x12 x 0.2mm shims -
    https://www.amainhobbies.com/protek-rc-3.6x12x0.2mm-differential-gear-washer-10-ptk-h-5914/p188802

    and the Arrma shim set -
    https://www.amainhobbies.com/arrma-washer-5x18x0.3mm-6-ara709024/p409556

    Note, that if you buy a diff internal gear set, it comes with the small 3.5x12 shims -
    https://www.amainhobbies.com/arrma-differential-gear-set-ara310436/p409428
     
    #4 Jerry-rigged, Jan 10, 2018
    Last edited: Jan 11, 2018
  5. Jerry-rigged

    Jerry-rigged Well-Known Member

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    Seems lots of shim kits are backordered.

    more shims -

    For the Sun gear, the big one inside the diff - the "proper" shim is 5x18. Small changes to that size should not matter.
    Tekno - 6x17 -
    https://www.amainhobbies.com/tekno-rc-6x17mm-differential-shims-6-tkr5145b/p374347

    Tekno 5x14 (maybe a bit small for the OD, but should work)-
    https://www.amainhobbies.com/tekno-rc-eb410-5x14mm-differential-shims-6-tkr6517/p700152
     
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