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<DIV><SPAN class=833315301-10102003><FONT face=Arial color=#0000ff size=2>Is
there any truth in the matter that a possible mode of failure in a NiMH pack is
for cell or cells to go open circuit. If this is the case you will crash because
you will immediately have 0 volts. Where as when a nicad cell fails the cell
normally shorts which results in less voltage which means you will probably
crash unless you are using 5 cells.</FONT></SPAN></DIV>
<DIV><SPAN class=833315301-10102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=833315301-10102003><FONT face=Arial color=#0000ff size=2>I
would be interested to hear if this has any truth from any experts out
there.</FONT></SPAN></DIV>
<DIV><SPAN class=833315301-10102003></SPAN> </DIV>
<DIV><SPAN class=833315301-10102003><FONT face=Arial color=#0000ff
size=2>Secondly if you look at Red Schofield's website (don't have the link
handy at the moment) he does not recommend NiMH for our
application.</FONT></SPAN></DIV>
<DIV><SPAN class=833315301-10102003></SPAN> </DIV>
<DIV><SPAN class=833315301-10102003><FONT face=Arial color=#0000ff
size=2>Peter</FONT> </SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> Bob Pastorello
[mailto:rcaerobob@cox.net]<BR><B>Sent:</B> Friday, 10 October 2003 11:26
AM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> RE: NIMH TX
pack<BR><BR></FONT></DIV>
<DIV><SPAN class=537122301-10102003><FONT face=Arial color=#0000ff size=2>FWIW
- my experience parallels Matt's exactly, even down to the same supplier for
my TX NiMH battery. I've had zero problems, and use the Sirius almost
exclusively now. Only NiMh batteries in all my applications. I
really like the long shelf life, and not losing any charge. Having more
capacity per ounce than comparable NiCads is a good side benefit,
too.</FONT></SPAN></DIV>
<DIV><SPAN class=537122301-10102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=537122301-10102003><FONT face=Arial color=#0000ff
size=2>Charge at the .1C rate the first couple cycles, like Matt sez...it'll
work just fine.</FONT></SPAN></DIV>
<DIV><SPAN class=537122301-10102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=537122301-10102003><FONT face=Arial color=#0000ff size=2>Bob
P.</FONT></SPAN></DIV>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B>
discussion-request@nsrca.org [mailto:discussion-request@nsrca.org] <B>On
Behalf Of </B>Rcmaster199@aol.com<BR><B>Sent:</B> Thursday, October 09, 2003
7:39 PM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> Re: NIMH TX
pack<BR><BR></FONT></DIV><FONT face=arial,helvetica><FONT lang=0 face=Arial
size=2 FAMILY="SANSSERIF">Derek,<BR><BR>On Earl Haury's suggestion I bought
my first NiMH airborne pack from Radical RC in Georgia, about 2 seasons ago.
The fellow who runs Radical appears to really know his stuff. He is the real
deal. He has written a pretty good article (on his website)<BR>, regarding
the care and feeding of NiMH bats, that is worthwhile reading. <BR><BR>The
key thing he talks about is setting the battery capacity when the battery is
new, uncharged. He stresses to charge the battery at the 0.1C rate the first
couple times. Thern fast charging isn't a problem and is actually
recommended<BR><BR>Earlier this year I also bought the TX bat to go with the
airborne. I followed that expert's advice to the letter and have been very
happy with the results, (some 70 chrge cycles later on the
airborne)<BR><BR>About the only thing I do now is place the bats on charge
on the SIRIUS Charger, on the way to the field, and by the time I get there,
they are charged (1000 ma charge rate)<BR><BR>Matt K<BR><BR>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px"
TYPE="CITE">Subj:<B>NIMH TX pack </B><BR>Date:10/9/2003 4:54:57 PM Eastern
Daylight Time<BR>From:<A
href="mailto:derekkoopowitz@earthlink.net">derekkoopowitz@earthlink.net</A><BR>Reply-to:<A
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A><BR>To:<A
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A><BR><I>Sent
from the Internet </I><BR><BR><BR><BR>I just ordered a new (replacement)
TX NimH battery pack from Cermark. It is a 1650mah pack. I've
never had a NimH pack before so I'd like to find out from the experts out
there if there is anything I need to do differently than a standard NiCad
pack. Can I use my Alpha 4 to charge it? I do have a Dymond
charger that I can use and I know that it does support NimH but I'd prefer
to use the Alpha 4 because of its AC/DC
versatility.<BR><BR><BR>Thanks.<BR></BLOCKQUOTE><BR><BR></BLOCKQUOTE></BLOCKQUOTE></FONT></FONT></BODY><P>***************************** Disclaimer ***************************** </P>
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