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Old 04-15-2009, 01:54 PM
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Long battery wires can kill ESC's over time: precautions, solutions & workarounds

All controller manufacturers and EE experts say the same, long battery wires will kill ESC's over time! Extend motor wires instead of battery wires. If you cannot but extend the battery wires you have to add extra ESC input capacitors.

ESC manufacturer and EE expert statements (in unison), workarounds, rules of thumb, capacitor types, 'watery' explanation, theory:
too long battery wires can kill ESC over time: precautions, solutions & workarounds - RCG

Contents
  • Problem
  • Solution I & II, rules of thumb
  • Capacitor type & polarity (orientation!)
  • How to add extra capacitors
  • DIY capacitor pack pictures
  • Capacitor & pack suppliers
  • Expert/manufacturer opinions & their rules of thumb
Vriendelijke groeten Ron
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Old 06-13-2009, 08:44 PM
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Re: Long battery wires will kill ESC's over time! Extend motor wires

A problem not mentioned is the DC switching current rating that the caps are rated for, this is a big issue not addressed by the article. If they are underrated and are switching more current than they are rated for they will go bad. This is part of the long wire issue. A quick check is if the caps are getting warm(thermal rise while running).The longer the wire length the more DC switching current the caps are subject to. IR losses at work. The ESC vendors cut corners for cost so we can buy cheaper and with it comes a price.
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Old 10-01-2009, 08:36 AM
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Re: Long battery wires will kill ESC's over time! Extend motor wires

Quote:
Originally Posted by ron_van_sommeren View Post
... ESC manufacturer and EE expert statements (in unison), workarounds, rules of thumb, capacitor types, 'watery' explanation, theory:
www.rcgroups.com/forums/showthread.php?t=952523&highlight=kill ...
I have added several pictures of capacitor units, diy units too, and comments about the influence of the distance between parallel battery wires to my first post:
www.rcgroups.com/forums/showthread.php?t=952523&highlight=kill

Vriendelijke groeten Ron
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Old 10-04-2009, 09:35 AM
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Re: Long battery wires will kill ESC's over time! Extend motor wires

Thanks for the info Ron.
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Old 11-23-2009, 09:22 PM
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Re: Long battery wires will kill ESC's over time! Extend motor wires

Ron,
What are your thoughts on installing a resistor on a seperate power lead to prevent that lovely "SNAP" and electrical arc when you plug in a pack to the esc on a big system, to prevent damage to the electronics?
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Old 11-24-2009, 06:07 PM
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Re: Long battery wires will kill ESC's over time! Extend motor wires

What are you doing over here on the dark side, Ron.....?
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Old 01-31-2010, 12:44 AM
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Re: Long battery wires will kill ESC's over time! Extend motor wires

Wiring to reduce spark
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Old 06-09-2011, 11:24 AM
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Excellent battery wire length thread by someone who apparently is into controller and or power supply design: explanation, considerations, capacitor choice, capacitor sources, albeit with a slight e-bike slant:
endless-sphere.com/forums/viewtopic.php?f=30&t=22194

Vriendelijke groeten Ron
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Old 06-09-2011, 11:25 AM
ron_van_sommeren is offline
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Quote:
Originally Posted by Kiva Flyer View Post
What are you doing over here on the dark side, Ron.....?
To boldly go ...

Quote:
Originally Posted by Glacier Girl View Post
Ron, What are your thoughts on installing a resistor on a seperate power lead to prevent that lovely "SNAP" and electrical arc when you plug in a pack to the esc on a big system, to prevent damage to the electronics?
www.scriptasylum.com/rc_speed/index.html
-> "No spark" resistor

homepage.mac.com/kmyersefo/ampfeb09/ampfeb09.htm
-> How to prevent sparking
or
http://homepage.mac.com/kmyersefo/ampfeb09/ampfeb09.pdf


Technical Information | MGM Compro - Electronics for Models
-> "How to prevent sparking when connecting batteries with higher number of cells"

www.rcgroups.com/forums/showthread.php?t=983802
www.rcgroups.com/forums/showthread.php?t=1444212
www.rcgroups.com/forums/showthread.php?t=1162067

Or just buy one from e.g. from SLS -> "precharge AVS"


Vriendelijke groeten Ron
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Old 10-17-2011, 07:47 PM
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If you don't want to diy the capacitor unit
www.castlecreations.com/products/cc-cap-pack.html (ignore the 'boost' remarks, they don't apply)
www.castlecreations.com/support/documents/CC-Cap-Pack-Installation.pdf

www.yge.de/artikel.php?search=ygecaps&more=yes

Vriendelijke groeten Ron
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Old 04-12-2016, 08:21 PM
ron_van_sommeren is offline
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I have updated the link in my OP with more links and info
too long battery wires can kill ESC over time: precautions, solutions & workarounds - RCG

Contents
  • Problem
  • Solution I & II, rules of thumb
  • Capacitor type & polarity (orientation!)
  • How to add extra capacitors
  • DIY capacitor pack pictures
  • Capacitor & pack suppliers
  • Expert/manufacturer opinions & their rules of thumb
    They all say the same ...
Vriendelijke groeten Ron
diy motor tips Drive Calculator
diy motor group Cumulus MFC
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Old 04-13-2016, 08:30 AM
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Old 06-14-2019, 08:54 PM
ron_van_sommeren is offline
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Four costly controllers consecutively cremated
ESC Failure and Overheating - RCG

Watery analogy in this water hammer video. I like the instantly-stopping-a-moving-freight-train-at-the-front analogy in this video. Also notice the location of the anti-surge device.
www.youtube.com/watch?v=xoLmVFAFjn4


Vriendelijke groeten Ron
• Without a watt-meter you are in the dark ... until something starts to glow •
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