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  1. #1
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    Default Stampede VXL 4x4 Hobbywing 4000kV Upgrade

    Hi everyone, Recently bought this Max10 SCT ESC Combo with 3660SL 4000kV Brushless Motor for my pede 1/10, but when I installed it it broke the spur gear of the slipper clutch, probably the gear of the motor didn't fit on my current spur gear.

    Now I have to buy the slipper clutch and a different gear but don't know what to buy, can someone help me get the correct parts?

    Thank you very much for any information.

    Pictures: https://www.screencast.com/t/WbLaIv55xtw

    -The gear is bigger than the original engine
    -The gear broke the spur gear tooth
    -Also the pin of the engine is thicker for the hobbywing

  2. #2
    RC Qualifier GotNoRice's Avatar
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    Feb 2011
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    Quote Originally Posted by fredix View Post
    it broke the spur gear of the slipper clutch, probably the gear of the motor didn't fit on my current spur gear.

    Now I have to buy the slipper clutch and a different gear but don't know what to buy, can someone help me get the correct parts?
    You don't have to buy a new slipper clutch, you just have to buy a new spur.

    https://traxxas.com/products/parts/telemetry/3956

    https://traxxas.com/explodedviews/67...ampede-4X4-VXL

    For your pinion, you need 32-pitch (often abbreviated as 32p) or Mod 0.8. Mod 0.8 vs 32p is metric vs non-metric, but they are so close that they are compatible. From the pictures, it looks like you tried to use a 48p pinion gear (smaller teeth). You will also need a pinion that can fit a 5mm shaft.

    I would recommend this:
    https://www.amazon.com/Robinson-Raci.../dp/B00JNL5UVG

    Keep the teeth count lower IMO since 4000kv is pretty high, especially if you ever want to use 3s lipo.

  3. #3
    RC Turnbuckle Jr. olds97_lss's Avatar
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    Dec 2003
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    Dekalb, IL
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    Yep, your going to want to run a pretty low pinion.

    When I ran the max10 sct/3660sl 3200kv in my stampede, mine overheated the motor on me running 13/54 gearing with trencher 2.8 tires on 3S. I never ran 2S in it, so not sure what gearing you'd need to run for that.

    When I ran the castle sct sv3/3800kv, I was able to run 11/54, but it was cooler out at the time, so not sure how it would have done in the summer heat. It was 35-40F outside at the time.

    When I ran that same system on 2S, I ran 13/54 and it did ok.

    I had fans on the esc and motor.

    So, to run 3S, you may have to try and use 10T pinion and with 2S, a 12T pinion. Unless your running the stock tires. I think they are a bit lighter and lower profile than the trencher 2.8's I ran, so they will put less load on things.

    I run in the grass a lot, so I have to gear for that.
    https://www.youtube.com/c/olds97lss

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