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<DIV><FONT face=Arial size=2>Hi Jim,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Fully agree with your statements. </FONT></DIV>
<DIV><FONT face=Arial size=2>Questions: </FONT></DIV>
<DIV><FONT face=Arial size=2>- Which capacity Li-Ion battery are you
recommending for a pattern plane equipped with digitals?</FONT></DIV>
<DIV><FONT face=Arial size=2>- Which solid state failsafe voltage regulator
switch harness do you consider suitable?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks for your comments.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Urs </FONT></DIV>
<DIV><FONT face=Arial size=2>NSRCA # 3069</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=joddino@socal.rr.com href="mailto:joddino@socal.rr.com">J.Oddino</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, January 28, 2005 8:14
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: any merit in running dual
battery packs ?</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Two packs and two switch harnesses are good from
the standpoint of eliminating single point failures and they would minimize
voltage drops between the battery and receiver buss as the current in each
would be cut in half thereby reducing the voltage drop by a factor of
two. The down side is the added weight and cost. I'm using two in
my third scale plane but have stuck with single packs in my pattern size
planes. If you go with one battery and one switch I'd recommend a solid
state failsafe voltage regulator type switch harness and a Li-Ion pack.
The higher capacity of Li-Ion takes care of the added current we see with the
digitals and the higher voltage allows better regulation at a higher voltage
resulting in more servo torque and speed (more power). With the voltage
regulator you don't need to worry about voltage drops between the battery and
the buss.</FONT></DIV>
<DIV><FONT face=Arial size=2>Jim</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=hitesh@salt.ac.za href="mailto:hitesh@salt.ac.za">Hitesh Gajjar</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, January 24, 2005 4:13
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> any merit in running dual
battery packs ?</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=095360912-24012005>Hi,</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=095360912-24012005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=095360912-24012005>Now that we all using high powered digital servo's
with incredible holding power etc - is there any merit in running 2 battery
packs, say 1 Ah each as opposed to 1 high capacity pack thereby
eliminating the single point failure ? If I did want to run 2 packs, is a
diode necessary to prevent 1 pack from possibly charging the other if 1 pack
were to go bad ?</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=095360912-24012005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=095360912-24012005>Cheers,</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=095360912-24012005>Hitesh</SPAN></FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>