[NSRCA-discussion] electric brain fart have a nice chuckle

[Chad Northeast]

Regarding shelf life...

I just got a couple of new sets of 5300's....and compared them to my 
packs from last year with the micro logger (in flight data)....the packs 
sat around all winter with basically no use, and very little control of 
storage voltage.

The old packs perform identical to the new ones, in air performance is 
not different enough tell them apart really.  The packs that sat over 
winter did take a few cycles to get back up to par though.

Soooo....I dont think packs sitting for a winter is all that bad for 
them.  It can probably be argued that 2C charging is more harmful to the 
lifespan than sitting on the shelf is....but there is not enough 
information to form that as a factual conclusion :)



Steven Maxwell wrote:

>  I have about 38 flight on the new electric Smaracea (smaragd wings 
> and stab and Panacea fuse) Hacker C50-14XL, Jeti 90 controller, TP 10s 
> 5300, made my third flight today in about 13 MPH winds for some reason 
> I felt I was losing power starting at the 1/2 hourglass ( P-07) so on 
> landing ran the throttle trim back to center to stop motor as usual 
> and for some reason I went up front to spin the prop man it's tight, 
> just regreased with new grease 6 flights ago, dejected to say the 
> least that something was wrong, carried it back to the flight stands 
> unplugged big batteries and receiver battery, went back up front to 
> spin the prop again, smooth as silk, well crap whats this, Denny my 
> flying buddy said could it be programming, Duh we have brake active, 
> plugged everything back in included watt'sup meter and ran throttle 
> trim up took meter reading and 65.75 amps same as new, brought trim 
> back to center and yes the motor was tight again, the brake works well 
> LOL, hope youal! l get a good laugh out of this we did.
>  As  side note I'm convinced that if you at contest that fly's every 
> class one round at a time you can get by with one set of batteries for 
> pattern, this has to be done with 2 chargers capable 10 amps and cell 
> balancing, charging at 2c, charging in less that 30 minutes, no cool 
> down after flight *(if batteries are not really hot under say 140 
> degrees F and never fly more than one pattern (P-07)* I've tested this 
> and works well, so the expense is much lower than expected, chargers 
> are cheaper than batteries, this will also do other things like better 
> shelf life for batteries, it's been my felling that having to many 
> packs that you can't get enough flights for many years to get full 
> value out of batteries. Using just one set a year will bring cost down 
> to less than buying fuel for most people, I would love to prove this 
> but we fly back to back rounds at our contest so I have to have 2 
> packs. Would love to hear others comments.
>  
> Steven Maxwell
>  
>
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