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  1. #1
    RC poster
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    Jun 2011
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    Some heating issues

    Looking for some guidance from the pro's. My Revo is 3 months old has been ran around 15 times. Recently I've been experiencing some heating issues with the motor and ESC. I am running the 18/54 gearing on 2S 5300 30C batteries mainly in the grass and dirt. After only around 10 mins of play time the ESC fan is kicked on with some readings at 160 F and the motor is hitting around 180 F. I bash pretty conservatively so I'm not going full throttle the whole time and it's only around 70 F outside for the temperature.

    First thing I tried was to go back to the stock gearing and put on the original spur gear, but the temp problems were the same. So I guess I'm just looking for some other ideas like if bad bearings somewhere could make the system work harder and overheat or if I should cut holes in the body. Thanks in advance for the help.

    Ohh and still using the stock Talon tires.

  2. #2
    RC Qualifier
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    Mar 2008
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    Massachusetts
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    something's wrong ..... I'm geared 18/58 using 4S (Onynx 25C batts) and after a full all out session the other day my max was 142 F . 75 degree outside temp when I ran .

    gear mesh ? binding in the center d-shaft under the skid plate ?
    ERBE - 8ight T/E - Kyosho Inferno

  3. #3
    RC poster
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    Jun 2011
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    7
    Didn't think to look there. Thanks, hopefully thats the culprit.

    Sent from my Motorola Electrify using Tapatalk

  4. #4
    RC Turnbuckle Jr. 87 GN's Avatar
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    Mar 2010
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    Running in heavy (tall) grass run's up the temps....
    undergearing & over gearing raises temps

    Hot motor + cool esc = under geared.
    Cool motor + hot esc = over geared
    Everything warm just right..

    Motor ~ 180/190*F maximum, ideally 140/160*F, temps can be 10* higher inside the motor
    ESC ~ pretty much same temps / Fan comes on @ 150*F
    Lipo's ~ 140*F max, ideally 100/120*F
    Would you go flip my truck back over??

  5. #5
    RC Turnbuckle Jr. O.G.'s Avatar
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    Nov 2010
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    5,986
    How about adding a fan to the motor?
    My Black & Blue Rally is faster than your color...

  6. #6
    RC Turnbuckle Jr. 87 GN's Avatar
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    kansas
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    fans can help but they are a bandaids
    Would you go flip my truck back over??

  7. #7
    RC poster
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    Jun 2011
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    Well i did some digging and one of the bearings in the rear left axle carrier doesn't spin very well. Not sure if its my issue but might help. Thx for the help guys

    Sent from my Motorola Electrify using Tapatalk

  8. #8
    RC Turnbuckle Jr.
    Join Date
    Oct 2009
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    Springfield, MO
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    3,681
    Sounds like you're on the right track. Another easy test is to move the motor so it doesn't mesh with the spur and roll the truck around. You'll still be fighting 22 or so bearings and a bunch of gears, so it won't be frictionless, but it should roll around pretty easily.

    Leave the truck on so you can steer it, try full lock to lock, try it with the suspension compressed... try all sorts of combinations to see if you get any binding in the drivetrain.

  9. #9
    RC poster
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    Jun 2011
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    I'll try that when I get home. Thanks Ducati777. Was trying to think of a good way to test for binding.

    Sent from my Motorola Electrify using Tapatalk

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