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Thread: Ezrun 9t motor getting very hot

  1. #1
    Junior Member
    Join Date
    Jun 2012
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    4

    Ezrun 9t motor getting very hot

    Hi there, i have an ezrun 9t 35a setup in my car, running off a 5100mah nimh. I have noticed the motor getting significantly hot after a few minutes of playtime. i cant hold on to it for more than 2 seconds. I am currently running on a 23 pinion and 83 spur, 48 pitch. I think i have the gear mesh right as the local hobby store set it for me. I have read other threads and i think i need to gear down on the pinion. but how many teeth?? im a newbie and im not too sure. Any help would be greatly appreciated...

  2. #2
    Senior Member
    Join Date
    Mar 2012
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    293
    What brand and what model? But it is your gearing. If you run offroad that gearing is way to high. Try 19/86.

  3. #3
    Junior Member
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    Jun 2012
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    Im using my car for drifting and touring... what pinion would be suitable for the 83 spur?

  4. #4
    Senior Member
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    Mar 2012
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    293
    Experiment with different sizes. Try 16/83 and it should be fine.

  5. #5
    Junior Member
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    Jun 2012
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    Ok thanks for that

  6. #6
    Senior Member
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    May 2012
    Location
    holland, michigan
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    266
    go with a 90t spur and a 16t pinion 48p
    your only supposed to use that gearing if your only doing speed runs
    thats why your motor is running so hot

  7. #7
    Junior Member
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    Jul 2012
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    Sheung Shui
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    20
    are you use the motor heat sink on the motor?
    i think it can resolve the problem.

  8. #8
    Junior Member
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    Jul 2012
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    Sheung Shui
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    20
    the discharge rate of the battery is too high

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