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<DIV><FONT face=Arial size=2>Also, though it's a great thing if it can be
implemented well, regenerative braking will contribute to heating of the
motor and it may actually reduce the downline braking effect somewhat. If
you don't dissipate the energy into a load, the motor will spin at a higher RPM
while windmilling, effectively increasing the disc area and allowing it to cool
a little bit on downlines. Re heating, when a load is applied (the battery
under charge in this case), the voltage generated by the motor windings
now results in a fairly significant current flow (no, or very little flow
happens without the charge path closed). This will result in electrical
power being dissipated in the windings, therefore heating will occur on a
downline, not cooling. Also, since the battery is already running warm, it
may not be very good for it to get these brief and relatively large charging
currents. Not sure how bad that effect may be, but it's got to get
evaluated by a battey expert. Sure would be good to solve the problem and
keep everything within safe parameters though.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ed</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=ehaury@houston.rr.com href="mailto:ehaury@houston.rr.com">Earl
Haury</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, February 18, 2006 6:27
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Electric
vs. Glow</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Bob</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Regenerative braking is the holy grail for hybrid
E vehicles also. While the motor is an effective generator with the controls
available, the issue is the ability of the batteries to accept the
resulting high charge rate. Some systems have been designed using capacitors
to smooth the flow, but large capacity requirements limits practicality.
Of course with LiPo charge rates in the 1 - 3C range, this becomes even more
problematic for our systems.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Earl</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=bob@toprudder.com href="mailto:bob@toprudder.com">Bob Richards</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=patternrules@earthlink.net
href="mailto:patternrules@earthlink.net">patternrules@earthlink.net</A> ; <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, February 17, 2006 8:38
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
Electric vs. Glow</DIV>
<DIV><BR></DIV>
<DIV>Now if they could make the brake regenerative, they would have
something!</DIV>
<DIV> </DIV>
<DIV>Bob R.</DIV>
<DIV><BR><BR><B><I>Steven Maxwell <<A
href="mailto:patternrules@earthlink.net">patternrules@earthlink.net</A>></I></B>
wrote:</DIV>
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<DIV>
<DIV>Jason I hadn't heard about the brake either, any more little things
to made things work better.</DIV>
<DIV> Steve Maxwell</DIV>
<DIV> </DIV>
<DIV></DIV></DIV>
<DIV> </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=verne@twmi.rr.com href="mailto:verne@twmi.rr.com">Verne
Koester</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To: </B><A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing
List</A></DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> 2/17/2006 8:49:13 PM </DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
Electric vs. Glow</DIV>
<DIV><BR></DIV><FONT size=2>
<DIV><FONT face=Arial>Hi Jason,</FONT></DIV>
<DIV><FONT face=Arial>I'm venturing, or maybe I should say, wading into
electric this year. You mentioned the brake eating gears. I'm sure you
meant the conventional brake that flat out stops the prop. What's your
thought on the Hacker f3a brake that comes with the competition version
of the speed control? We haven't seen or heard much of anything about
this motor or the controller since the Worlds.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Thanks,</FONT></DIV>
<DIV><FONT face=Arial>Verne Koester</FONT></DIV>
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