[NSRCA-discussion] Resistance and retirement

[Ron Hansen]

Mike each charger measures resistance differently so you need to talk with
folks that use the same charger.

 

For example, I use the Hyperion charger and Zippy Compacts (yellow packs).
Brand new the total pack resistance is about 8 or so.

 

They stay in the 8 - 20 range for quite a while and provide good power.

 

Once they start getting above 20 or so I start noticing a drop in power
especially on windy days.

 

 

 

From: NSRCA-discussion [mailto:nsrca-discussion-bounces at lists.nsrca.org] On
Behalf Of Ronald Van Putte via NSRCA-discussion
Sent: Sunday, November 09, 2014 7:39 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] Resistance and retirement

 

Sometimes it is white smoke and that's bad, but worse is black smoke (and
fire).

 

Ron Van Putte

 

On Nov 9, 2014, at 4:47 PM, Dan Curtis via NSRCA-discussion
<nsrca-discussion at lists.nsrca.org> wrote:

 

Ah, flag, that is where I was making my mistake.  I thought it was white
smoke.

 

Dan

 

On Sunday, November 9, 2014 4:42 PM, Ed White via NSRCA-discussion
<nsrca-discussion at lists.nsrca.org> wrote:

 

I don't go by IR differences. I eventually reach a point that in a practice
flight I pull up for the last maneuver in the sequence and the battery puts
up a little white flag and says, "not gonna happen".  Then I retire the
pack.

Ed

 

On Sat, Nov 8, 2014 at 1:56 PM, Michael Cohen via NSRCA-discussion
<nsrca-discussion at lists.nsrca.org> wrote:

Is there any rule of thumb for how much difference between individual cell
resistances is OK before a back should be retired?

 

Regards,

Mike C


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