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  1. #1
    RC poster
    Join Date
    Oct 2012
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    1

    ESC and New Motor - HELP

    I'll start this thread by saying i know just enough to be dangerous....

    I have a Traxxas Slash 4x4. Everything is pretty much stock. I run 3S lipos and i have the original Velineon VXL-3s Electronic Speed Control. I've gone through a few of the factor motors. (The rotors spin off the shaft.) Traxxas has replaced it twice under warranty but i'm now outside of my warranty window. That's why i bought a cheap new motor online. (I run this truck for fun. I don't like spending money on it. I have other hobbies i spend more money on.)

    I replaced the Velineon 3500 Brushless Motor with a ********* 10.5T 3200kv brushless sensored motor. Now to the problem.... When i go 100%throttle with the controller the motor pulses almost like its turning on and off. If i give it 75% to 90% throttle its okay.....but i can't go to 100% without the issue. I've tried it with and without the sensor being hooked up to the esc. Same problem. (With the sensor hooked up i notice the 15% to 25% throttle seems smoother) I've tried 3S lipos and 2S lipos. Same problem.

    What do i need to do? reset the esc? live with the problem and know i bought a $35 dollar motor?

    Your advice and guidance is greatly appreciated.

    thanks!

    (Batteries are 3S 40c 5000mah and 2S 40c 5000mah)

  2. #2
    RC Qualifier
    Join Date
    Dec 2010
    Location
    Edmonton, AB (and looking for an RC buddy. PM me if you're from NE Edmonton!)
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    395
    Do you have another speed control to test it with?
    Sig edited for awesomeness. NC

  3. #3
    RC Turnbuckle Jr. vxlrocket's Avatar
    Join Date
    Dec 2007
    Location
    Manassas, Va
    Posts
    6,654
    It might because the sensored motor could be 4 pole. The velineon esc won't engage full rpms and it acts almost like a rev limiter on 4 pole motors.
    Associated rc8TE, rc8.2E, B4.2, Ofna LX2E, Slash

  4. #4
    RC Turnbuckle Jr. O.G.'s Avatar
    Join Date
    Nov 2010
    Location
    South of St Louis
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    5,986
    My velineon esc's would never run a sensored motor... just wouldn't do it no matter what, sensor wire connected or not.
    My Black & Blue Rally is faster than your color...

  5. #5
    RC Enthusiast
    Join Date
    Jun 2012
    Posts
    31
    You might be geared too high.


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