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  1. #1
    RC poster
    Join Date
    Jun 2020

    X Maxx 8s Pinion and Spur gear problem.

    Hello all hoping someone here can help. My stock x maxx 8s pinion and spur gears got shredded after a few runs. Replaced it with stock 18-tooth pinion and 54-tooth spur but now it doesn't roll smoothly and sounds really bad when i roll it back and forth by hand. Heres a video of it rolling.

  2. #2
    RC Champion
    Join Date
    Mar 2016
    Using a 18t pinion without the pins under the
    motor mounts is recommended -
    setting the mesh by hand with just a little play

    Noise turning by hand seems normal
    debris cleaned out of cavities or will get into the teeth
    Last edited by CrazyXMAXX; 06-02-2020 at 10:54 PM.

  3. #3
    RC Turnbuckle Jr. rag6's Avatar
    Join Date
    Mar 2008
    Accepting requests for bashing at GREENWOOD BASHPLEX in Pittsburgh PA!! Check the thread in the track buddy forum and reply there or pm
    I think this is one of the few shaky areas of this tough truck.

    In the end, removing the pins and setting mesh by hand helped, but didn't stop the spurs from shattering. After 2 54t spurs, I went to the 46t spur and the smaller gear lasted 3x as long, but it too shattered. So I bit the bullet, and bought a hot racing 50t spur:;c=975
    And a mod 1 20t pinion. I think it was losi.

    100 runs or so on that gear combo and zero sign of wear.

    It's a really good ratio. Never ran hot on 90 days, and really wakes up acceleration over the box stock gearing. It tops out around 45mph.

    Sent from my moto e5 cruise using Tapatalk
    Ya can't polish fertilizer...

  4. #4
    RC Racer
    Join Date
    Apr 2015
    Tinley Park, IL
    I have an early 8S I have always run on 6S.

    I shredded the original 46, and bought the bullet and bought the Hot Racing 50 T spur with the original 18 t pinion.

    Worked fine for 2 years.

    Just recently started upping the pinion gears. Up to 21 now. More fun but more dangerous.

    I am considering going smaller on the spur.

    Sent from my iPhone using Tapatalk

  5. #5
    RC poster
    Join Date
    Jun 2020
    Thx yall, I'll try it without the pins.

  6. #6
    RC poster
    Join Date
    Apr 2020
    Scrap those traxxas gears! Get hardened gears. I like GDS spur gears and Robinson Racing hardened pinions! You will have 0 issues for many many future bash sessions. Im running 20/46 and love it!

  7. #7
    RC Qualifier
    Join Date
    Feb 2020
    Canary Islands, Tenerife, Spain.
    As mates says, set mesh by hand, took out the pin system. In the future, get hardened gears, are better and more durable than stock.

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