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Too long battery wires can kill ESC: precautions, solutions & workarounds

Discussion in 'Electric Motors, ESC's, Batteries, and Chargers' started by ron van sommeren, Apr 14, 2018.

   
  1. .

    Extend motor wires, and keep the battery wires short. Keep controller close to battery.

    Too long battery wires can kill ESC: precautions, solutions & workarounds - RCG

    Contents
    • Solution I & II, rules of thumb
    • Problem
    • Capacitor type & polarity (orientation!)
    • How & where (not) to add extra capacitors
    • DIY capacitor pack pictures
    • Capacitor & pack suppliers
    • Expert/manufacturer opinions, they all say the same ... & their rules of thumb.
    • Explanation, water hammer/knock analogy, theory, references, measurements

    Vriendelijke groeten ;) Ron
    • Without a watt-meter you are in the dark, until something starts to glow •
    e-flight calculatorswatt-metersdiy motor tipsCumulus MFC
     
  2. Snoopy1

    Snoopy1 640cc Uber Pimp

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    So if I understand you correctly no matter where you place the batteries in the plane extend the leads from the motor so that the motor control unit (ESC) is as close to the battery. So what would be the acceptable length of wire from the battery to the ESC.
     
  3. Snoopy1 likes this.
  4. 2walla

    2walla 50cc

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    i did some testing a few years ago and couldnt tell any difference in performance with the motor wires extended out 5 feet. The motor doesnt care how far away it is from the esc as long as the wires are of appropriate size.
     
  5. Snoopy1

    Snoopy1 640cc Uber Pimp

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    Thanks that is good to know. When you say appropriate size as long as it is the same size as the motor.
     
  6. To keep voltage and power losses the same when extending any wire, wire cross-sectional area should increase by same factor as increase in wire length. E.g. for double wirelength increase area by factor two. And more than that is never bad :)

    Vriendelijke groeten ;) Ron
    • Without a watt-meter you are in the dark, until something starts to glow •
    e-flight calculatorswatt-metersdiy motor tipsCumulus MFC
     
    Last edited: Apr 19, 2018 at 6:21 PM
    Snoopy1 likes this.
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