<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I was trying to say they'd be changed again.<div><br></div><div>Jim O</div><div><br></div><div><br><div><div>On Feb 9, 2009, at 2:02 PM, Richard Strickland wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: 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: 0; "><div class="hmmessage" style="font-size: 10pt; font-family: Verdana; ">The rules already favor IC--but we've been down that road...<br>RS<br> <br>> From:<span class="Apple-converted-space"> </span><a href="mailto:joddino@socal.rr.com">joddino@socal.rr.com</a><br>> To:<span class="Apple-converted-space"> </span><a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a><br>> Date: Mon, 9 Feb 2009 13:54:18 -0800<br>> Subject: Re: [NSRCA-discussion] Electric/IC ...was Arming Plug/Receptacle Problem<br>><span class="Apple-converted-space"> </span><br>> I've been at this longer than most and have known from the beginning<span class="Apple-converted-space"> </span><br>> that the propulsion system is the key to winning in Pattern<span class="Apple-converted-space"> </span><br>> competition. It can also be the most frustrating due to constantly<span class="Apple-converted-space"> </span><br>> changing conditions. I found that the gas engines with spark ignition<span class="Apple-converted-space"> </span><br>> were a lot more consistent than glow and that reduced the<span class="Apple-converted-space"> </span><br>> frustration. I have more recently convinced myself that electric is<span class="Apple-converted-space"> </span><br>> the least frustrating. A few folks have gone back to glow after<span class="Apple-converted-space"> </span><br>> playing with electric to get more power for windy conditions. We are<span class="Apple-converted-space"> </span><br>> now getting close to getting more than enough out of electric systems<span class="Apple-converted-space"> </span><br>> (3 to 4 HP?) and when that happens we won't have these discussions<span class="Apple-converted-space"> </span><br>> anymore. However, before that happens, the rules will probably be<span class="Apple-converted-space"> </span><br>> changed to favor IC.<br>><span class="Apple-converted-space"> </span><br>> Jim<br>><span class="Apple-converted-space"> </span><br>><span class="Apple-converted-space"> </span><br>> On Feb 9, 2009, at 12:39 PM, Jerry Voth wrote:<br>><span class="Apple-converted-space"> </span><br>> > I've been lurking for a long time and after reading all the things<span class="Apple-converted-space"> </span><br>> > that one needs to do to successfully fly electric, it makes one<span class="Apple-converted-space"> </span><br>> > wonder how things would be if electrics were the norm from the<span class="Apple-converted-space"> </span><br>> > beginning of powered R/C models. It might go like this;<br>> ><br>> > Hey guys, I just bought this little IC engine and I tried it on one<span class="Apple-converted-space"> </span><br>> > of my Pattern models and it works really well. "Look what it will do;<br>> > 1. It has just as much power as our electric motors.<br>> > 2. The only batteries you need are for the flight pack, glow igniter<span class="Apple-converted-space"> </span><br>> > and the electric starter if you don't like to flip by hand.<br>> > 3. All you have to do is pump fuel into the tank, spin the engine<span class="Apple-converted-space"> </span><br>> > with the starter and fly.The tail gets a little oily, but what the<span class="Apple-converted-space"> </span><br>> > heck, it's fairly easy to clean up.(Switching the radio on first is<span class="Apple-converted-space"> </span><br>> > a given.)<br>> > 4. You don't have to haul a generator or an extra car battery around<span class="Apple-converted-space"> </span><br>> > to charge motor batteries."<br>> ><br>> > Please don't take this the wrong way. It is tongue in cheek and just<span class="Apple-converted-space"> </span><br>> > an observation. I also have too much time on my hands these days.<br>> ><br>> > JJV<br>> > ----- Original Message ----- From: "Jay Marshall"<span class="Apple-converted-space"> </span><br>> > <<a href="mailto:lightfoot@sc.rr.com">lightfoot@sc.rr.com</a>><br>> > To: "'General pattern discussion'" <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>><br>> > Sent: Monday, February 09, 2009 1:50 PM<br>> > Subject: Re: [NSRCA-discussion] Arming Plug/Receptacle Problem<br>> ><br>> ><br>> >> A 100 ohm resistor may be enough to charge the caps and make the ESC<br>> >> "active". Bad idea...<br>> >><br>> >> Jay Marshall<br>> >><br>> >> -----Original Message-----<br>> >> From:<span class="Apple-converted-space"> </span><a href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</a><br>> >> [<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org">mailto:nsrca-discussion-bounces@lists.nsrca.org</a>] On Behalf Of Ron<span class="Apple-converted-space"> </span><br>> >> Van Putte<br>> >> Sent: Monday, February 09, 2009 1:14 PM<br>> >> To: General pattern discussion<br>> >> Subject: Re: [NSRCA-discussion] Arming Plug/Receptacle Problem<br>> >><br>> >> Good. I will try it. What wattage 100 ohm resistor? Let's see,<br>> >> doesn't sustained power equal voltage squared, divided by the<br>> >> resistance? If so, 42 squared, divided by 100 is 17.64 watts.<br>> >> That's probably overkill, since the current surge is transitory. How<br>> >> about a 100 ohm, 10 watt resistor?<br>> >><br>> >> Just thought of something: With the 100 ohm resistor across the<br>> >> arming plug receptacle, won't the ESC be on whenever the batteries<br>> >> are plugged into the circuit?<br>> >><br>> >> BTW, what about Castle Creation's statement that the "spark is your<br>> >> friend'?<br>> >><br>> >> Ron<br>> >><br>> >> On Feb 9, 2009, at 11:55 AM, James Oddino wrote:<br>> >><br>> >>> Put a 100 ohm resistor across the arming plug receptacle. Then the<br>> >>> capacitors in the ESC will charge without a spark as you connect<br>> >>> the batteries. When you connect the arming plug, no spark.<br>> >>><br>> >>> Jim<br>> >>><br>> >>><br>> >>> On Feb 9, 2009, at 8:08 AM, Ron Van Putte wrote:<br>> >>><br>> >>>> I have a problem which I am sure many other E-powered airplane<br>> >>>> owners have that I'd like to solve. I use an arming plug to<br>> >>>> connect the two 5S Lipo packs to the ESC. On initial contact of<br>> >>>> the arming plug with the receptacle, there's a big spark thrown.<br>> >>>> Eventually the contacts on the arming plug and receptacle get<br>> >>>> burned to the point where the electrical contact is very bad.<br>> >>>> Yesterday I had to land my airplane deadstick because (I think)<br>> >>>> the ESC saw what it thought was low voltage out of the battery<br>> >>>> that was actually due to the burned arming plug/receptacle<br>> >>>> contacts. BTW, I am using high-amp Anderson Power Pole<br>> >>>> connectors, which are probably more susceptible to having the<br>> >>>> contacts burned than would Deans Ultra connectors.<br>> >>>><br>> >>>> I have thought about putting a BIG capacitor in parallel with the<br>> >>>> arming plug, that would damp the initial current surge which<br>> >>>> causes the spark. The capacitor could be removed before flight.<br>> >>>> However, I'm wondering if there's a more elegant solution.<br>> >>>><br>> >>>> Ron Van Putte<br>> >>>><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>> >>><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>> >><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>> >><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>> >><br>> ><br>> ><br>> > --------------------------------------------------------------------------------<br>> ><br>> ><br>> ><br>> > No virus found in this incoming message.<br>> > Checked by AVG -<span class="Apple-converted-space"> </span><a href="http://www.avg.com">www.avg.com</a><br>> > Version: 8.0.233 / Virus Database: 270.10.19/1941 - Release Date:<span class="Apple-converted-space"> </span><br>> > 02/08/09 17:57:00<br>> ><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><br><hr>Want to do more with Windows Live? 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