[NSRCA-discussion] True R/C packs/Zippy packs

[Kevin Sung]

Try this link:

http://www.hobbycity.com/hobbycity/store/uh_index.asp
  -----Original Message-----
  From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Bob Richards
  Sent: Tuesday, April 01, 2008 7:18 PM
  To: NSRCA Mailing List
  Subject: Re: [NSRCA-discussion] True R/C packs/Zippy packs


  Is there a website for the Zippy packs?

  Bob R.


  atwooddon at aol.com wrote:
    Yes, I think they are the predecessor to the Zippy packs.  A couple guys
are using the Zippys at my home field.  One set is a 5000mah 6S1P setup and
seems to be standing up pretty well.

    D


    -----Original Message-----
    From: James Oddino <joddino at socal.rr.com>
    To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
    Sent: Mon, 31 Mar 2008 5:53 pm
    Subject: Re: [NSRCA-discussion] True R/C packs/Zippy packs


    Has anyone tried the 15C Zippy packs?  Are these the forerunners of what
you are flying Don?  They look pretty good on paper.


    Jim




    On Mar 31, 2008, at 3:50 PM, atwooddon at aol.com wrote:

      Jim, I typically discharge around 3400 or less.  With the new P09
sequence, a full sequence only uses about 25-2700 mah.  I will admit I have
not 'babied' these packs initially.  If they were going to puff or loose
capacity early in their life I wanted to know. So, after the first 5 easy
flights, I started pushing them with 85-90% discharges for about 10-15
flights.  They would get up around 120 degrees on a 90 degree day but they
stayed in balance pretty well and charged fine.  They held their capacity
after a 4 month storage at 50% discharge and kept in a cool workshop over
the 'winter' here in NorCal.

      Don


      -----Original Message-----
      From: James Oddino <joddino at socal.rr.com>
      To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
      Sent: Mon, 31 Mar 2008 10:52 am
      Subject: Re: [NSRCA-discussion] True R/C packs


      How deep are you discharging the 4100s?  I was thinking about some
4500s to save weight but not sure how the cycle life would be affected.
Once in awhile I'll fly some extra maneuvers and get up in the 4000 mAh
range.  I guess one would discipline himself better if he didn't have the
margin.


      Jim




      On Mar 31, 2008, at 8:39 AM, atwooddon at aol.com wrote:

        That is one of the issues with these type packs.  You never know
what the configuration is or what cells they may be using when you re-order.
To give credit where it is due, the 'name brand' packs can be replicated,
you know what you are getting when you order a 'xyz 10s' configuration.  And
you can probably order another one 6-12 months from now and get the same
thing.

        Having said that, I too have been experimenting with 'generic'
packs, so far with good luck.  My 'generic' 4100 pack has over 50 cycles on
it and going strong.  However, it has to reach over a 100 cycles to reach
break even cost with my 'name brand' packs which have well over 200 cycles
each and still performing reasonable well.  Only time will tell.

        I know the prices have dropped even more since I bought my 'generic'
pack late last summer so that cost ratio has probably shifted a little since
then.

        Don

        In a message dated 3/31/2008 7:13:21 A.M. Pacific Daylight Time,
cjm767driver at hotmail.com writes:
          I received my set of 5S 5000 batteries from True R/C and see that
they
          are different cells from that older set that I bought in the Fall.
The
          newer cells are about 5" in length vs slightly over 6" for the
older
          pack. The new ones look similar to the short Flight Power F3A
packs. I
          have an email to Dan at True R/C to get the scoop on the newer
cell make
          up but the point is that our observations about the True R/C packs
were
          based on the older cells and the new batteries may be better or
worse -
          we need to start all over and get data on these now.

          Chris



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