<html><head><base href="x-msg://486/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Everybody has an opinion and that's why they sell Fords, Chevys, Hondas, Toyotas, etc. <div><br></div><div>Ron</div><div> <div><br></div><div><br><div><div>On Dec 7, 2012, at 2:14 PM, Joe Lachowski wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Arial; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div class="hmmessage" style="font-size: 10pt; font-family: Tahoma; "><div dir="ltr">5000's or better are the best way to go no matter what schedule you fly. They will last longer and won't get as hot. Unless you have a weight problem, 5000's or better at 25C or 30C are the way to go. Besides you can then safely throw in an extra few practice maneuvers. Also, 5000's can afford you the flexibility to have and fly a smaller practice plane on 5S like the Monolog 70, Osiris, Angel S, or Wind S in addition to your 2M ship(s).<br> <br><div><div id="SkyDrivePlaceholder"></div>> From:<span class="Apple-converted-space"> </span><a href="mailto:vanputter@gmail.com">vanputter@gmail.com</a><br>> Date: Fri, 7 Dec 2012 13:53:39 -0600<br>> To:<span class="Apple-converted-space"> </span><a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a><br>> Subject: Re: [NSRCA-discussion] Going Electric - Battery Questions<br>><span class="Apple-converted-space"> </span><br>> This is a refreshing discussion. I have been telling people for years that they don't need continuous discharge 35C, 45C, etc batteries because they would NEVER use it. The response I often get is, "Well, more is better". Certainly more $$$. The Scottish ancestry blood in my veins boils when I hear that.<span class="Apple-converted-space"> </span><br>><span class="Apple-converted-space"> </span><br>> Another thing that torques me is when Sportsman and Intermediate pilots insist of getting 5000mah packs because that's what the "big boys" use. I keep trying to tell them that any capacity more than about a 33 % reserve above what their maneuver schedule requires is dead weight that shouldn't be carried around.<br>><span class="Apple-converted-space"> </span><br>> Ron<br>><span class="Apple-converted-space"> </span><br>> On Dec 7, 2012, at 1:18 PM, Atwood, Mark wrote:<br>><span class="Apple-converted-space"> </span><br>> > Hey Larry,<br>> ><span class="Apple-converted-space"> </span><br>> > As everyone is telling you, the BIG difference between what you're proposing and what you're accustomed to with Glow is that you'll fly 90% of your sequence at half throttle. Not figuratively half throttle... but literally half, or below. Even a vertical upline does not need full motor on these setups. Flying intermediate even less so. Also, at full throttle you'll likely only pull about 75amps, so even 15C batteries would get the job done, but I would stick with 20 and higher.<br>> ><span class="Apple-converted-space"> </span><br>> ><span class="Apple-converted-space"> </span><br>> > Mark Atwood<br>> > Paragon Consulting, Inc. | President<br>> > 5885 Landerbrook Drive Suite 130, Cleveland Ohio, 44124<br>> > Phone: 440.684.3101 x102 | Fax: 440.684.3102<br>> > mark.atwood@paragon-inc.com<<a href="mailto:mark.atwood@paragon-inc.com">mailto:mark.atwood@paragon-inc.com</a>> | www.paragon-inc.com<<a href="http://www.paragon-inc.com/">http://www.paragon-inc.com/</a>><br>> ><span class="Apple-converted-space"> </span><br>> ><span class="Apple-converted-space"> </span><br>> ><span class="Apple-converted-space"> </span><br>> ><span class="Apple-converted-space"> </span><br>> > On Dec 7, 2012, at 1:37 PM, Larry Diamond wrote:<br>> ><span class="Apple-converted-space"> </span><br>> > OK, play nice... Never dealt with electrics before... I could be way off base, but here is a stab at it...<br>> ><span class="Apple-converted-space"> </span><br>> > Is my math flawed?<br>> ><span class="Apple-converted-space"> </span><br>> > Motor - Himax 6330-210 F3A Motor (210KV)<br>> > ESC - Phoenix Ice 80HV - New V2 Version<br>> > Battery 10s - 37VDC<br>> ><span class="Apple-converted-space"> </span><br>> > Plane - 2M Monolog<br>> ><span class="Apple-converted-space"> </span><br>> > Max power range is about ~2,700 to ~3,000 watts with this set up...<br>> ><span class="Apple-converted-space"> </span><br>> > Calculated Battery Discharge Rate = 80Amps (ESC rating) divided by 3,500mAh (battery capacity) = 22.9C<br>> ><span class="Apple-converted-space"> </span><br>> > Based on this math I suspect that a 30C dicharge rate is good on paper... additional discharge performane = $$$ and I don't want to spend money on battery performance I don't need...<br>> ><span class="Apple-converted-space"> </span><br>> > Class - Intermediate<br>> ><span class="Apple-converted-space"> </span><br>> > What is the recommended battery capacity and discharge rate...?<br>> ><span class="Apple-converted-space"> </span><br>> > I understand the many variables associated with the answer like, prop size, temps, wind, throttle control, yada, yada, yada...<br>> ><span class="Apple-converted-space"> </span><br>> > I would like to fly the Intermediate sequence a couple time without having to refuel electrons...<br>> ><span class="Apple-converted-space"> </span><br>> > Larry Diamond<br>> > _______________________________________________<br>> > NSRCA-discussion mailing list<br>> > NSRCA-discussion@lists.nsrca.org<<a href="mailto:NSRCA-discussion@lists.nsrca.org">mailto:NSRCA-discussion@lists.nsrca.org</a>><br>> ><span class="Apple-converted-space"> </span><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>> ><span class="Apple-converted-space"> </span><br>> > _______________________________________________<br>> > NSRCA-discussion mailing list<br>> ><span class="Apple-converted-space"> </span><a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br>> ><span class="Apple-converted-space"> </span><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>><span class="Apple-converted-space"> </span><br>> _______________________________________________<br>> NSRCA-discussion mailing list<br>><span class="Apple-converted-space"> </span><a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br>><span class="Apple-converted-space"> </span><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br></div></div>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a></div></span></blockquote></div><br></div></div></body></html>