[NSRCA-discussion] arm/disarm 10S

[Phil S.]

  Dave, there could also be some owies on the fingers of the person 
creating the arcing.  Don't ask how I know...  ;-{(

_____
Phil Spelt, KCRC Emeritus, Secretary
AMA 1294 Scientific Leader Member
SPA L-18, Board Member
(865)435-1476v, (865)604-0541c


On 2/25/2015 8:09 PM, Dave Lockhart via NSRCA-discussion wrote:
>
> There is no harm to the batteries or ESC from the spark.  There can be 
> some erosion on the connectors from the arcing.  Most connectors 
> suffer the erosion on the ends of the connectors, and not on the  
> mating surfaces....in which case, the erosion really doesn't cause a 
> problem.
>
> Anti-spark arming circuits that are in the primary power delivery 
> pathway are a potential point of failure.  Much better to use a 
> secondary parallel pathway to absorb the spark and charge the caps, 
> and then plug in the primary leads, and then disconnect the secondary 
> ones.
>
> Regards,
>
> Dave
>
> *From:* NSRCA-discussion 
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] *On Behalf Of 
> *learn2turn via NSRCA-discussion
> *Sent:* Sunday, February 22, 2015 4:22 PM
> *To:* nsrca-discussion at lists.nsrca.org
> *Subject:* Re: [NSRCA-discussion] arm/disarm 10S
>
> Regarding an arming system, I don't fly 10S but from what I understand 
> when you are up around 8-10S it is a bad idea to connect the batteries 
> directly.  The caps on the front-end of the ESC can instantly draw a 
> huge surge of current for a short time.  The arming systems for that 
> sized pack usually have a button with a resister in series.  You hit 
> the button for a few seconds and that lets the caps charge up slowly.  
> Then you plug the full-current connector in.
>
> -Ken
>
>
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