<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'><P>I agree more after flying the new master schedule last Saturday. </P>
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<P>Vicente "Vince" Bortone<BR>----- Original Message -----<BR>From: "Richard Strickland" <pamrich47@hotmail.com><BR>To: "General pattern discussion" <nsrca-discussion@lists.nsrca.org><BR>Sent: Monday, February 9, 2009 4:02:59 PM GMT -06:00 US/Canada Central<BR>Subject: Re: [NSRCA-discussion] Electric/IC ...was Arming Plug/Receptacle Problem<BR><BR>
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The rules already favor IC--but we've been down that road...<BR>RS<BR> <BR>> From: joddino@socal.rr.com<BR>> To: nsrca-discussion@lists.nsrca.org<BR>> Date: Mon, 9 Feb 2009 13:54:18 -0800<BR>> Subject: Re: [NSRCA-discussion] Electric/IC ...was Arming Plug/Receptacle Problem<BR>> <BR>> I've been at this longer than most and have known from the beginning <BR>> that the propulsion system is the key to winning in Pattern <BR>> competition. It can also be the most frustrating due to constantly <BR>> changing conditions. I found that the gas engines with spark ignition <BR>> were a lot more consistent than glow and that reduced the <BR>> frustration. I have more recently convinced myself that electric is <BR>> the least frustrating. A few folks have gone back to glow after <BR>> playing with electric to get more power for windy conditions. We are <BR>> now getting close to getting more than enough out of electric systems <BR>> (3 to 4 HP?) and when that happens we won't have these discussions <BR>> anymore. However, before that happens, the rules will probably be <BR>> changed to favor IC.<BR>> <BR>> Jim<BR>> <BR>> <BR>> On Feb 9, 2009, at 12:39 PM, Jerry Voth wrote:<BR>> <BR>> > I've been lurking for a long time and after reading all the things <BR>> > that one needs to do to successfully fly electric, it makes one <BR>> > wonder how things would be if electrics were the norm from the <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 <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 <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 <BR>> > with the starter and fly.The tail gets a little oily, but what the <BR>> > heck, it's fairly easy to clean up.(Switching the radio on first is <BR>> > a given.)<BR>> > 4. You don't have to haul a generator or an extra car battery around <BR>> > to charge motor batteries."<BR>> ><BR>> > Please don't take this the wrong way. It is tongue in cheek and just <BR>> > an observation. I also have too much time on my hands these days.<BR>> ><BR>> > JJV<BR>> > ----- Original Message ----- From: "Jay Marshall" <BR>> > <lightfoot@sc.rr.com><BR>> > To: "'General pattern discussion'" <nsrca-discussion@lists.nsrca.org><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: nsrca-discussion-bounces@lists.nsrca.org<BR>> >> [mailto:nsrca-discussion-bounces@lists.nsrca.org] On Behalf Of Ron <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>> >>>> NSRCA-discussion@lists.nsrca.org<BR>> >>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>> >>><BR>> >>> _______________________________________________<BR>> >>> NSRCA-discussion mailing list<BR>> >>> NSRCA-discussion@lists.nsrca.org<BR>> >>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>> >><BR>> >> _______________________________________________<BR>> >> NSRCA-discussion mailing list<BR>> >> NSRCA-discussion@lists.nsrca.org<BR>> >> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>> >><BR>> >> _______________________________________________<BR>> >> NSRCA-discussion mailing list<BR>> >> NSRCA-discussion@lists.nsrca.org<BR>> >> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>> >><BR>> ><BR>> ><BR>> > --------------------------------------------------------------------------------<BR>> ><BR>> ><BR>> ><BR>> > No virus found in this incoming message.<BR>> > Checked by AVG - www.avg.com<BR>> > Version: 8.0.233 / Virus Database: 270.10.19/1941 - Release Date: <BR>> > 02/08/09 17:57:00<BR>> ><BR>> > _______________________________________________<BR>> > NSRCA-discussion mailing list<BR>> > NSRCA-discussion@lists.nsrca.org<BR>> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>> <BR>> _______________________________________________<BR>> NSRCA-discussion mailing list<BR>> NSRCA-discussion@lists.nsrca.org<BR>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR><BR></P>
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