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  1. #1
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    5379x & 5678 constantly breaking

    Hey guys, my friend has my old summit and he keeps breaking 5379x &5678. The summit has a stronger castle sensored brushless motor in it with alot more power. Was just wondering if you guys have any suggestions or help with how to prevent them from breaking?

  2. #2
    RC Champion grizzly03's Avatar
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    Best thing I did was to shim the diffs and get better bearings. And run a slightly looser slipper clutch. I run a Tekin 2000kv on 5s with mudslingers and haven't broken diffs in a long time. The truck wasn't designed for the amount of power of a brushless setup. Especially if your trying to run 6s voltage without doing a little upgrade work. Running 4s would be the most reliable setup.

  3. #3
    RC Turnbuckle Jr. jamann's Avatar
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    Quote Originally Posted by grizzly03 View Post
    Best thing I did was to shim the diffs and get better bearings. And run a slightly looser slipper clutch. I run a Tekin 2000kv on 5s with mudslingers and haven't broken diffs in a long time. The truck wasn't designed for the amount of power of a brushless setup. Especially if your trying to run 6s voltage without doing a little upgrade work. Running 4s would be the most reliable setup.
    This is pretty much exactly what I would have suggested.avoid hi gear when the diffs are locked on surfaces that have good traction like pavement

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  4. #4
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    Traxxas makes a hardened steel ring gear tra5379R. He should also turn down punch control and what other guys said.
    OVERKILL,10Sum,16Sum,Xo1,MMSlas,44Stamp,Rus,16Ral

  5. #5
    RC Champion grizzly03's Avatar
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    Quote Originally Posted by malonefamily2003 View Post
    Traxxas makes a hardened steel ring gear tra5379R...
    Have you had the pleasure in testing them? I was thinking of getting them as a great addition for my summit when I get some more LEM goodies.

  6. #6
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    Quote Originally Posted by grizzly03 View Post
    Have you had the pleasure in testing them? I was thinking of getting them as a great addition for my summit when I get some more LEM goodies.
    No havenít tried them yet.
    OVERKILL,10Sum,16Sum,Xo1,MMSlas,44Stamp,Rus,16Ral

  7. #7
    RC Champion grizzly03's Avatar
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    When LEM gets the aluminum housing with a larger pinion bearing to production, I think those gears plus the cup&spiders installed inside could be the ultimate Summit diff.

  8. #8
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    Run it on 3s and exercise throttle control.

    But NOBODY wants to hear that.
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  9. #9
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    I agree with 3s I ran mine before on with hpi torq setup a few times and loved it. Just cogged a little too much for me so I went back to stock

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