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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I really think you may have a simple setup timing issue.&nbsp; I&#8217;m
curious as Dave L suggested if you had some different throttle &#8220;habits&#8221; that
changed when you were recently flying (such as a new pattern as Dave
suggested).&nbsp;&nbsp; It sounds like the sound that happens when a rapid increase in
throttle gets the controller ahead of the motor and you get that electronic
backfire squeal.&nbsp; &nbsp;&nbsp;And again, this may only happen with your best battery
packs.&nbsp;&nbsp; <o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The Axi motors used to do this a lot.&nbsp; <o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>Mark Atwood</span></b><span style='font-size:11.0pt;font-family:
"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>

<p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Verdana","sans-serif";
color:black'>Paragon Consulting, Inc.</span></b><span style='font-size:9.0pt;
font-family:"Verdana","sans-serif";color:black'>&nbsp;&nbsp;</span><b><span
style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'>|</span></b><span
style='font-size:9.0pt;font-family:"Verdana","sans-serif";color:black'>&nbsp;&nbsp;President</span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:8.5pt;font-family:"Verdana","sans-serif";
color:black'>5885&nbsp;Landerbrook&nbsp;Drive Suite
130,&nbsp;Cleveland&nbsp;Ohio,&nbsp;44124</span><span style='font-size:10.5pt;
font-family:"Verdana","sans-serif";color:black'>&nbsp;</span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:8.5pt;font-family:"Verdana","sans-serif";
color:black'>Phone: 440.684.3101 x102&nbsp;&nbsp;</span><b><span
style='font-size:9.0pt;font-family:"Verdana","sans-serif";color:black'>|</span></b><span
style='font-size:8.5pt;font-family:"Verdana","sans-serif";color:black'>&nbsp;&nbsp;Fax:
440.684.3102</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:8.5pt;font-family:"Verdana","sans-serif";
color:#1351F3'><a href="mailto:mark.atwood@paragon-inc.com"><span
style='color:blue'>mark.atwood@paragon-inc.com</span></a> &nbsp;</span><b><span
style='font-size:9.0pt;font-family:"Verdana","sans-serif";color:black'>|</span></b><span
style='font-size:8.5pt;font-family:"Verdana","sans-serif";color:black'>&nbsp;&nbsp;</span><span
style='font-size:8.5pt;font-family:"Verdana","sans-serif";color:#1351F3'><a
href="http://www.paragon-inc.com/"><span style='color:blue'>www.paragon-inc.com</span></a></span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

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<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"'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>Bob
Richards<br>
<b>Sent:</b> Friday, October 01, 2010 4:42 PM<br>
<b>To:</b> General pattern discussion<br>
<b>Subject:</b> Re: [NSRCA-discussion] Pletty CC HV 85 issue<o:p></o:p></span></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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  <div>
  <p class=MsoNormal>Yeah, I was wondering if it might be a mechanical issue,
  too. I had a foamy once that had similar behaviour, (down on power, strange
  squeal) and it ended up the prop shaft was slipping. BUT, it did it every
  time, not just once-in-a-while.<o:p></o:p></p>
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  <p class=MsoNormal>&nbsp;<o:p></o:p></p>
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  <p class=MsoNormal>Bob R.<br>
  <br>
  --- On <b>Fri, 10/1/10, Stuart Chale <i>&lt;schale@optonline.net&gt;</i></b>
  wrote:<o:p></o:p></p>
  </div>
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  margin-left:3.75pt;margin-top:5.0pt;margin-bottom:5.0pt'>
  <p class=MsoNormal style='margin-bottom:12.0pt'><br>
  From: Stuart Chale &lt;schale@optonline.net&gt;<br>
  Subject: Re: [NSRCA-discussion] Pletty CC HV 85 issue<br>
  To: &quot;General pattern discussion&quot;
  &lt;nsrca-discussion@lists.nsrca.org&gt;<br>
  Date: Friday, October 1, 2010, 9:03 AM<o:p></o:p></p>
  <div id=yiv1163562489>
  <p class=MsoNormal>Just one season flying mostly once a week , so under 100
  or so.<br>
  <br>
  On 10/1/2010 8:23 AM, Vicente &quot;Vince&quot; Bortone wrote: <o:p></o:p></p>
  <div>
  <p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-family:
  "Arial","sans-serif";color:black'>How many flights on the motor?&nbsp; I
  wonder if could be bearings?<br>
  <br>
  Vicente &quot;Vince&quot; Bortone<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'><o:p>&nbsp;</o:p></span></p>

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