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  1. #1
    RC poster
    Join Date
    Jun 2019
    Posts
    12

    Clicking sound on my brand new MAXX on first run

    Hello, can you identify which part is the most likely to make this noise when the truck gains speed.
    It's a short video, for my ears, the noise is most heard on the second half of the video.
    My dealer is far from my place, I would prefer to diagnose, have a look and he will send me the defect parts
    Thanks for help !

  2. #2
    RC Racer
    Join Date
    May 2009
    Posts
    158
    Quote Originally Posted by sjauquet View Post
    Hello, can you identify which part is the most likely to make this noise when the truck gains speed.
    It's a short video, for my ears, the noise is most heard on the second half of the video.
    My dealer is far from my place, I would prefer to diagnose, have a look and he will send me the defect parts
    Thanks for help !
    Check your gears
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  3. #3
    RC Enthusiast
    Join Date
    Jan 2020
    Posts
    34
    That’s how mine sounds, or maybe I don’t hear the clicking.. I do hear the gears whining but you could lube them to quiet that down.

  4. #4
    RC poster
    Join Date
    Jun 2019
    Posts
    12
    Thanks for your help, I will dismount it.

  5. #5
    RC Champion RazorRC22's Avatar
    Join Date
    Sep 2015
    Posts
    2,340
    It sounds more like something to do with the driveshafts than the gears to me. I'd try pulling each corner and spin the driveshaft in the bearings one at a time and make sure everything is smooth and free.
    youtube.com/c/RazorRCvideos

  6. #6
    RC poster
    Join Date
    Jun 2019
    Posts
    12
    Hello,
    Dismounted all the MAXX, front diff, center diff, spur gear, rear diff, and then I saw that the ring gear of the rear was not flat.
    I unscrewed the 4 screws of the diff, tightened them them again with about the same torque and in a star pattern.
    It solved the noise coming from the rear.
    Then I tested it on the road and although some noise are gone there is still the same click click click when applying torque.
    Goes back to wrenching, checked if the front has not the same problem, but no, nothing this side.
    Pffff... for a new premium product, I'm quite frustrated, looks like a monday car :-/

    I made a vid, so it can probably help others:

    Last edited by sjauquet; 01-17-2020 at 03:17 PM.

  7. #7
    RC Competitor
    Join Date
    Oct 2019
    Posts
    72
    Guessing the ring gear wrapped when it was cooling. Traxxas should replace it, but looks ok run while you wait.

  8. #8
    RC poster
    Join Date
    Jun 2019
    Posts
    12
    For the rear, re-tightening the screws with a star pattern made it "straight" again.
    I re-checked the front and there it seems it's the whole diff who is ovalized...

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