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  1. #1
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    Motor Overheating!!

    First of all its Winter here, the time when nothing should get hot at all. I have just fixed my truck after a few months of Emaxx dormancy, and the motor is getting so hot that its melting the snow that's getting into the truck(all waterproof electronics). The most recent time i saw a little bit of smoke and brought it in immediately, the motor was functioning just fine still btw. Just wondering what I should do.

  2. #2
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    Gear mesh could be too tight for the pinion and spur.

  3. #3
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    Quote Originally Posted by BuGgYbAsHeR.28 View Post
    Gear mesh could be too tight for the pinion and spur.
    Yeah, i'm pretty sure its not that, before I aligned the motor I put a piece of paper in between the gears.

  4. #4
    RC Qualifier ausprime's Avatar
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    Might be some bearings. Try to roll the truck, without the motor pinion touching the spur. Just to see if the truck rolls nice and smooth.
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  5. #5
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    Quote Originally Posted by ausprime View Post
    Might be some bearings. Try to roll the truck, without the motor pinion touching the spur. Just to see if the truck rolls nice and smooth.
    I tried that, it rolled perfectly.

  6. #6
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    Also, its a Neumotors motor

  7. #7
    RC Qualifier ausprime's Avatar
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    Have you played with the timing, using the castle link?
    Maybe reset the ESC to default settings?
    If the ESC settings are fine, it might be the rotor inside the motor.
    The kevlar wrap might have torn.
    Picture courtesy of h8tow8
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  8. #8
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    Quote Originally Posted by ausprime View Post
    Have you played with the timing, using the castle link?
    Maybe reset the ESC to default settings?
    If the ESC settings are fine, it might be the rotor inside the motor.
    The kevlar wrap might have torn.
    Picture courtesy of h8tow8
    Thanks, ill check that. is there any special procedure I should go through to not damage the motor, or is it relatively easy? It has some really strong magnets compared to castle motors.

    Also, what do I do if that has happened?
    Last edited by DR_SLARPii222; 11-26-2014 at 01:13 PM.

  9. #9
    RC Qualifier ausprime's Avatar
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    It is difficult to pull the rotor out. I used a rag to grip the shaft while pulling the rotor out.
    There used to be rebuild kits. But i think they are now discontinued.
    http://www.ebayhpirccar.com/rotors-c...00-p-2339.html
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  10. #10
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    Quote Originally Posted by DR_SLARPii222 View Post
    First of all its Winter here, the time when nothing should get hot at all. I have just fixed my truck after a few months of Emaxx dormancy, and the motor is getting so hot that its melting the snow that's getting into the truck(all waterproof electronics). The most recent time i saw a little bit of smoke and brought it in immediately, the motor was functioning just fine still btw. Just wondering what I should do.
    I would invest in a temp gun so that you can tell how hot the motor actually is. I doubt there is anything wrong it was probably just steam that you saw.

  11. #11
    RC Champion NFS's Avatar
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    Does it smell like electrical burn?
    The wraping around the magnets doesn't have to be damaged once the motor overheat the magnets loose power..I had a motor like that the rotor looked like new, also the inside of the motor no signal of something was bad, but it had that smells, also it ran when bench tested but didn't have the strenght to move the truck once installed. If you have doubts you can send the motor and esc to castle and they will check everything for you.
    Last edited by NFS; 11-26-2014 at 07:20 PM.

  12. #12
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    Quote Originally Posted by Werner700 View Post
    I would invest in a temp gun so that you can tell how hot the motor actually is. I doubt there is anything wrong it was probably just steam that you saw.
    I do have a temp gun, i didn't check the temp at the time, but I just ran the motor for 2 min at full throttle without the pinion and it got to 175 F (would probably get hotter, just didn't want to damage the motor). (and I smelled something like smoke)

  13. #13
    RC Champion NFS's Avatar
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    You shouldn't be running the motor without load..I would say it is done.

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    Quote Originally Posted by DR_SLARPii222 View Post
    I do have a temp gun, i didn't check the temp at the time, but I just ran the motor for 2 min at full throttle without the pinion and it got to 175 F (would probably get hotter, just didn't want to damage the motor). (and I smelled something like smoke)
    I'm sure running the motor with no load for that long could do some kind of damage

  15. #15
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    i dont see a reason the motor would be damaged, it just will take a high current which will turn back in to the battery because of no load-less resistance.
    but if it got that hot with no load its defently wrong.
    try connecting CC they might help you.

  16. #16
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    Quote Originally Posted by tamirlankri View Post
    i dont see a reason the motor would be damaged, it just will take a high current which will turn back in to the battery because of no load-less resistance.
    but if it got that hot with no load its defently wrong.
    try connecting CC they might help you.
    it got that hot with load too

  17. #17
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    well so its probably the bearing or something if its the same with load...
    try contacting traxxas see what they have to say maybe you will get a replacment or there is a fixable solution.

  18. #18
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    You could see if there's any wobble it the motor shaft. If there is you should replace the motor bearings with new ones

  19. #19
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    You could also try running it with a smaller pinion gear. That should help reduce the temps a bit.

  20. #20
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    ude it got hot with no load so changing gear mesh wont really help...

  21. #21
    RC Turnbuckle Jr. O.G.'s Avatar
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    175 is pretty hot for that short of a run time. Are you sure it wasn't damaged when you put it away last year?
    My Black & Blue Rally is faster than your color...

  22. #22
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    probably a bearing or a lightly shorted wire inside the motor is causing it to overheat, i think you can get a replacment but i am not sure. check it up its always wroth a try...

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