[NSRCA-discussion] Arming Plug/Receptacle Problem

[krishlan fitzsimmons]

I just use a piece of Romex wire. Cheap, and available at all hardware stores. 

Seriously, I use a dean's ultra with great success. I have replaced it many times though as I am the worlds worst at losing them. I usually go to the field with 3 and come home with 2. 

Chris          

--- On Mon, 2/9/09, James Oddino <joddino at socal.rr.com> wrote:
From: James Oddino <joddino at socal.rr.com>
Subject: Re: [NSRCA-discussion] Arming Plug/Receptacle Problem
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
Date: Monday, February 9, 2009, 9:55 AM

Put a 100 ohm resistor across the arming plug receptacle.  Then the capacitors
in the ESC will charge without a spark as you connect the batteries.  When you
connect the arming plug, no spark.

Jim


On Feb 9, 2009, at 8:08 AM, Ron Van Putte wrote:

> I have a problem which I am sure many other E-powered airplane owners have
that I'd like to solve.  I use an arming plug to connect the two 5S Lipo
packs to the ESC.  On initial contact of the arming plug with the receptacle,
there's a big spark thrown.  Eventually the contacts on the arming plug and
receptacle get burned to the point where the electrical contact is very bad. 
Yesterday I had to land my airplane deadstick because (I think) the ESC saw what
it thought was low voltage out of the battery that was actually due to the
burned arming plug/receptacle contacts.  BTW, I am using high-amp Anderson Power
Pole connectors, which are probably more susceptible to having the contacts
burned than would Deans Ultra connectors.
> 
> I have thought about putting a BIG capacitor in parallel with the arming
plug, that would damp the initial current surge which causes the spark.  The
capacitor could be removed before flight.  However, I'm wondering if
there's a more elegant solution.
> 
> Ron Van Putte
> 
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> NSRCA-discussion at lists.nsrca.org
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