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esc going bad?

Discussion in 'Short Course' started by rob69, Nov 3, 2014.

  1. rob69

    rob69 New Member

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  2. rcnut'14

    rcnut'14 certified rc addict
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    if the steering works, than yes, it's the esc
     
  3. rob69

    rob69 New Member

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    yes steering is working. And some times esc works fine but sometimes will cut out power then power will come back. And sometimes wont cut out at all.
     
  4. rob69

    rob69 New Member

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  5. rob69

    rob69 New Member

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    Its this system
     
  6. chetmotox

    chetmotox Studio Forums Elite
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    WAIT DON'T BUY AN ESC YET!

    It could be your receiver even if your steering works.

    First thing I would try is go to your receiver and flip your steering and esc leads so that your steering wheel controls your throttle and trigger controls your steering. Its very odd to drive this way but try that first. If your throttle then works but your steering works intermittently, then its your receiver. If your throttle still is acting up, then its your esc. If the problem goes away, it was probably a bad connection.

    It also could be your transmitter, but between your receiver and transmitter, the receiver is cheaper so try that first unless you have a spare receiver.
     
  7. rob69

    rob69 New Member

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    i do have a flysky gt3c i was going to bind with this because like having all my cars on one radio. So guess i will try that. Thanks for the help.
     
  8. chetmotox

    chetmotox Studio Forums Elite
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    Yeah no problem. Just test a few things like that first and make sure. I'm not saying it couldn't be your ESC but it wouldn't be fun to buy an ESC and not have it fix the problem. It could even be a multiple part issue. My SCX10 had a BEC that shorted out, fried my receiver, ESC, and motor.
     
  9. rob69

    rob69 New Member

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    hoping It's not the esc ????
     
  10. chetmotox

    chetmotox Studio Forums Elite
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    To me, it sounds more like a receiver issue. If it works fine intermittently, I would think its just loosing signal. I would think if the ESC went, it would just go and not go intermittently but I've seen stranger things.
     
  11. rob69

    rob69 New Member

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    :( dont know how all those ? got in thier lol
     
  12. rob69

    rob69 New Member

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  13. chetmotox

    chetmotox Studio Forums Elite
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    Just watching that video, I noticed that the throttle light on the esc (green LED) isn't on all the time. To me that is point towards the receiver even more so but I would still try flipping your receiver leads like I mentioned before.
     
  14. rob69

    rob69 New Member

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    ok cool thanks i have a extra receiver so hope that's what it is
     
  15. rcnut'14

    rcnut'14 certified rc addict
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    yea, now that I see that vid, I have ot agree. it's probably the rx
     
  16. Hpi-guy

    Hpi-guy Studio Forums Elite
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    Yep, check the radio system. Also try re calabrating the ESC to the radio if possible. Make sure trims and EPA are set correctly as well. Good luck!
     
  17. rob69

    rob69 New Member

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    It was nothing but the fact that the esc was not setup to run nimh packs. Looked it up on google and found that this esc motor combo needs lots of playing around to run nimh. Threw my lipo in it problem solved! Nimh pack was making the low voltage detection kick in.
     
  18. rob69

    rob69 New Member

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    This is what i found.

    Voltage drops big time during heavy acceleration. With that said I think when you're on full throttle the voltage drops so low the esc gets a low voltage reading and so it warns you. Then if you let it rest for a few seconds the voltage will go back up.

    Now you said it does it too when you're barely rolling. Is this after the full throttle?

    What are your esc settings? (List all settings)
    Just to clarify, voltage sag is much worse with NiMH batteries than with LiPo's. In the OP's case it sounds like it's severe enough to trigger the low voltage cutoff like stated above. It should not happen if you get a LiPo that is well matched to your motor/ESC combo. In the meantime, if you have a way to disable the low voltage cutoff within the ESC settings while running the NiMH battery, do so and you should not have any more problems! Just be sure to turn the LVC back on when/if you get a LiPo in there.
     
  19. rob69

    rob69 New Member

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    Thanks for trying to help me figure it out.
     

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