Dave, you're points are correct, but you're not taking into account a malfunction of the speed controller itself. They have been know to malfunction, so the safest approach, as Earl suggests, is to assume that anytime the battery is connected to the controller the motor may go to full throttle. Until you unplug the battery the thing is hot and dangerous regardless of your fail safe or switches on the transmitter. <div>
<br></div><div>Regarding pulling the disconnect (whether under canopy or via external arming pin), step over the model between wings and stab (just like we used to run up the glow models) and reach down to pull the plug. If it goes full throttle the back of your legs will stop forward momentum.</div>
<div><br></div><div>I see far too often that people switch off their radios with the plane in a potential dangerous position. This is putting a lot of trust in the technology when it's not necessary. When I retrieve my model, transmitter in hand or not, I make sure it is pointed away from people or property.</div>
<div><br></div><div>Keith <br><br><div class="gmail_quote">On Sun, Feb 12, 2012 at 2:28 PM, Dave Harmon <span dir="ltr"><<a href="mailto:k6xyz@sbcglobal.net">k6xyz@sbcglobal.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d">+1 on that.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d">Rather than having a disconnect, I think ensuring that the fail safe function of the radio is set properly is the way to go.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d">Generally…with today’s 2.4g radios…..not 72mhz PCM radios….I trust the electronics more than someone holding the transmitter. <u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d">Besides….with a disconnect it would be my luck to rip the side of the fuselage off and start a fire that way………or not being able to let go of a full throttle model to pull the disconnect….in this case just turn off the transmitter and/or have an external radio switch and turn off the receiver.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d">The ESC will shut off the motor when the ESC loses the pulse from the receiver…even if the failsafe is NOT configured correctly.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d">Everyone already knows this….or should know it…. but it’s a good thing to mention anyway…..<u></u><u></u></span></p><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:10.5pt;font-family:"Comic Sans MS";color:#1f497d">Dave Harmon<u></u><u></u></span></b></p><p class="MsoNormal"><b><span style="font-size:10.5pt;font-family:"Comic Sans MS";color:#1f497d">NSRCA 586<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-size:10.5pt;font-family:"Comic Sans MS";color:#1f497d">K6XYZ[at]sbcglobal[dot]net<u></u><u></u></span></b></p><p class="MsoNormal"><b><span style="font-size:10.5pt;font-family:"Comic Sans MS";color:#1f497d">Sperry, Ok.<u></u><u></u></span></b></p>
<div class="im"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d"><u></u> <u></u></span></p><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a> [mailto:<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a>] <b>On Behalf Of </b>Keith Hoard<br>
<b>Sent:</b> Sunday, February 12, 2012 1:44 PM<br><b>To:</b> General pattern discussion<br><b>Subject:</b> Re: [NSRCA-discussion] Arming Switch<u></u><u></u></span></p></div><p class="MsoNormal"><u></u> <u></u></p></div><p class="MsoNormal" style="margin-bottom:12.0pt">
I'd rather not cut a hole in my plane in the first place, or add another point of failure to the system. . . .</p><div><div class="h5"><br clear="all"><br>Keith Hoard<br>Collierville, TN<br><a href="mailto:khoard@gmail.com" target="_blank">khoard@gmail.com</a><br>
<br><br><br><u></u><u></u></div></div><p></p><div><div class="h5"><div><p class="MsoNormal">On Sun, Feb 12, 2012 at 1:37 PM, Ronald Van Putte <<a href="mailto:vanputte@cox.net" target="_blank">vanputte@cox.net</a>> wrote:<u></u><u></u></p>
<div><p class="MsoNormal">You can mount a female Deans connector in a piece of thin plywood, use Pacer Pro Zap to glue the Deans connector to the plywood and, after cutting an appropriate hole in the side of the fuselage, glue the assembly inside the fuselage. Use a male Deans connector with the leads soldered together as an arming plug.<u></u><u></u></p>
<div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Or you can buy a SharpRC SafeArm (<a href="http://www.sharprc.com/catalog/index.php?cPath=43" target="_blank">http://www.sharprc.com/catalog/index.php?cPath=43</a>)<u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Being cheap, I do the former.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Ron Van Putte<u></u><u></u></p>
</div><div><p class="MsoNormal"> <u></u><u></u></p><div><div><div><div><p class="MsoNormal">On Feb 12, 2012, at 11:55 AM, Ron Hansen wrote:<u></u><u></u></p></div><p class="MsoNormal"><u></u> <u></u></p></div></div><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div><div><div><div><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">What are the available arming switch options?<u></u><u></u></span></p></div><div><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Thanks<u></u><u></u></span></p>
</div><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Ron<u></u><u></u></span></p>
</div></div><p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Arial","sans-serif""><br><br>__________ Information from ESET Smart Security, version of virus signature database 6877 (20120211) __________<br>
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