<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
@font-face
{font-family:Times;
panose-1:2 2 6 3 5 4 5 2 3 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:Consolas;}
p.yiv1683548014msoacetate, li.yiv1683548014msoacetate, div.yiv1683548014msoacetate
{mso-style-name:yiv1683548014msoacetate;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
p.yiv1683548014msonormal, li.yiv1683548014msonormal, div.yiv1683548014msonormal
{mso-style-name:yiv1683548014msonormal;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
p.yiv1683548014msochpdefault, li.yiv1683548014msochpdefault, div.yiv1683548014msochpdefault
{mso-style-name:yiv1683548014msochpdefault;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
span.yiv1683548014msohyperlink
{mso-style-name:yiv1683548014msohyperlink;}
span.yiv1683548014msohyperlinkfollowed
{mso-style-name:yiv1683548014msohyperlinkfollowed;}
span.yiv1683548014htmlpreformattedchar
{mso-style-name:yiv1683548014htmlpreformattedchar;}
span.yiv1683548014emailstyle20
{mso-style-name:yiv1683548014emailstyle20;}
span.yiv1683548014balloontextchar
{mso-style-name:yiv1683548014balloontextchar;}
p.yiv1683548014msonormal1, li.yiv1683548014msonormal1, div.yiv1683548014msonormal1
{mso-style-name:yiv1683548014msonormal1;
margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";
color:black;}
span.yiv1683548014msohyperlink1
{mso-style-name:yiv1683548014msohyperlink1;
color:blue;
text-decoration:underline;}
span.yiv1683548014msohyperlinkfollowed1
{mso-style-name:yiv1683548014msohyperlinkfollowed1;
color:purple;
text-decoration:underline;}
p.yiv1683548014msoacetate1, li.yiv1683548014msoacetate1, div.yiv1683548014msoacetate1
{mso-style-name:yiv1683548014msoacetate1;
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";
color:black;}
span.yiv1683548014htmlpreformattedchar1
{mso-style-name:yiv1683548014htmlpreformattedchar1;
font-family:Consolas;
color:black;}
span.yiv1683548014emailstyle201
{mso-style-name:yiv1683548014emailstyle201;
font-family:"Arial","sans-serif";
color:#1F497D;}
span.yiv1683548014balloontextchar1
{mso-style-name:yiv1683548014balloontextchar1;
font-family:"Tahoma","sans-serif";
color:black;}
p.yiv1683548014msochpdefault1, li.yiv1683548014msochpdefault1, div.yiv1683548014msochpdefault1
{mso-style-name:yiv1683548014msochpdefault1;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:10.0pt;
font-family:"Times New Roman","serif";}
span.EmailStyle36
{mso-style-type:personal-reply;
font-family:"Arial","sans-serif";
color:#1F497D;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
..MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><span style="font-family: Arial;">Might I humbly suggest the "project pattern" series ongoing in flying models. ;)<br><br>Regards,<br><br>Dave<br><br>Sent from my HTC EVO 4G LTE exclusively from Sprint<br><br><div id="htc_header" style="">----- Reply message -----<br>From: "Verne Koester" <verne@twmi.rr.com><br>To: "'Larry Diamond'" <ldiamond@diamondrc.com>, "'General pattern discussion'" <nsrca-discussion@lists.nsrca.org><br>Subject: [NSRCA-discussion] Fw: Serious Torque on the Nose of the Model- RESUBMITTED<br>Date: Wed, Dec 5, 2012 15:05<br><br></div></span><br><div class=WordSection1><p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'>Larry,<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'>I think what must of us have done is to copy what was successful for someone else. There are lots of build articles on RC Universe in the pattern and electric pattern forums. Pick a plane, pick a motor, or some combination of the two and read. To my knowledge, there’s no single source point of information. Once you’ve narrowed down your choice, inquire right here and I’m sure you’ll get all the info you want or need.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'>Verne<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><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"'> nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>Larry Diamond<br><b>Sent:</b> Wednesday, December 05, 2012 2:30 PM<br><b>To:</b> General pattern discussion<br><b>Subject:</b> Re: [NSRCA-discussion] Fw: Serious Torque on the Nose of the Model- RESUBMITTED<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal style='background:white'><span style='color:black'>As somebody who is trying to get back into Pattern and those like me that have Zero experience with high power electric setups, is there an article or a something posted that we can reference?<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='color:black'>Maybe something on the NSRCA Website that can be accessed by all under Tips an Set Up...Yada Yada Yada...<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>Larry Diamond<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p></div><div><div><div><p class=MsoNormal style='background:white'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> Verne Koester <<a href="mailto:verne@twmi.rr.com">verne@twmi.rr.com</a>><br><b>To:</b> 'General pattern discussion' <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>> <br><b>Sent:</b> Wednesday, December 5, 2012 12:16 PM<br><b>Subject:</b> Re: [NSRCA-discussion] Fw: Serious Torque on the Nose of the Model- RESUBMITTED</span><span style='color:black'><o:p></o:p></span></p></div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p><div id=yiv1683548014><div><div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:#1F497D'>I agree with Chris. I’ve personally had thousands of flights with nose mounted motors with rear supports and never had so much as a hint of failure. If you count all the flights I’ve seen Andrew fly with his nose mounted, rear supported motors as well as countless others at the practice field and on the contest trail, the number probably reaches into the tens of thousands. </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:#1F497D'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:#1F497D'>The only time I’ve ever witnessed a catastrophic motor induced fuselage failure was while I was judging an FAI pilot flying an Axi-equipped Smaragd a few years back. Following a turnaround, there was a short, deep, rumbling sound that sounded a little like flutter with heavy bass followed by the departure of the motor and a significant section of the nose of the fuse. The motor was nose mounted and had no rear support. </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:#1F497D'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:#1F497D'>My best guess, and it is just a guess, was that the prop arc coupled with the forces of the looping turnaround, set up a harmonic, or flutter if you will, that the fuse couldn’t contain. The rumble was very brief before it came apart. </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:#1F497D'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:#1F497D'>I have no engineering data to report, just practical experience. A nose mounted motor without a rear support is a disaster about to happen. As Chris said, it’s just a matter of when.</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:#1F497D'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:#1F497D'>Verne Koester</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:#1F497D'> </span><span style='color:black'><o:p></o:p></span></p></div><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><div><p class=MsoNormal style='background:white'><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">nsrca-discussion-bounces@lists.nsrca.org</a> [<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org">mailto:nsrca-discussion-bounces@lists.nsrca.org</a>] <b>On Behalf Of </b>Chris<br><b>Sent:</b> Wednesday, December 05, 2012 12:50 PM<br><b>To:</b> Bob Kane; General pattern discussion<br><b>Subject:</b> Re: [NSRCA-discussion] Fw: Serious Torque on the Nose of the Model- RESUBMITTED</span><span style='color:black'><o:p></o:p></span></p></div></div></div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='color:black'>Early in the electric transition, many of us found out the hard way that nose mounted outrunners without a rear support would lead to structural failures with nearly 100% certainty. My nose mounted Genesis lasted 1 1/2 flights before failure. Others had many more flights but even the best cases I know of had nose structure stresses and cracking due to the unsupported nose mounting. Jerry Budd and I did a lot of testing and posting about this issue back in 2006 or 2007. Newer designs have reinforced noses which help but bottom line, don't nose mount an electric motor without rear support. It "might" last 1 or 500 flights but 501 won't be as successful.<br><br>Chris<o:p></o:p></span></p></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'>On 12/5/2012 12:38 PM, Bob Kane wrote:<o:p></o:p></span></p></div></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><div><div><p class=MsoNormal style='background:white'><span style='color:black'>Great observations. I am curious about the numbers myself, maybe in my spare time (ha!) I'll pull out my old physics books and crunch some numbers. <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'>Bob Kane<br><a href="mailto:getterflash@yahoo.com" target="_blank">getterflash@yahoo.com</a><o:p></o:p></span></p></div></div><div><div><div><div><p class=MsoNormal style='background:white'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> ehaury <a href="mailto:ejhaury@comcast.net" target="_blank">mailto:ejhaury@comcast.net</a><br><b>To:</b> mike mueller <a href="mailto:mikemueller@f3aunlimited.com" target="_blank">mailto:mikemueller@f3aunlimited.com</a>; General pattern discussion <a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">mailto:nsrca-discussion@lists.nsrca.org</a> <br><b>Sent:</b> Wednesday, December 5, 2012 11:02 AM<br><b>Subject:</b> Re: [NSRCA-discussion] Fw: Serious Torque on the Nose of the Model- RESUBMITTED</span><span style='color:black'><o:p></o:p></span></p></div></div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div><div id=yiv1683548014><div><div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:black'>I don't know what caused Charlie's failure, we've discussed possibilities - obviously forces occurred that were beyond what the structure could handle.</span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:black'>Torque & precession have been with us since we stuck engines & props on the front of airplanes. They really haven't changed much with the advent of E power - actually went down with the use of lighter props.</span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:black'>I'd just like to offer that the Hacker Q80 design doesn't change much. The rotating outer member (Q80-14) weighs about 100g and rotates up to 7K rpm with an 1 1/2" radius. The rotor in a C50 also weighs around 100g, but it rotates up to 40K rpm on a 3/8" radius. The latter, with the gearbox, can probably apply torque quicker than the outie. Most other popular outrunners fall somewhere between these. (Be neat if someone actually made the calcs.)</span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:black'>I've lots of flights with the Q80-11 without issue (the Q80-14 is less powerful). It is firmly front mounted with also a solid rear mount. I think we all know the importance of a nose ring on a YS and there's been no success running inrunners without a rear support. While some have had success running the Q without a rear support (bet the prop was light), these things really need a more sturdy rear support (or very stout front mnt / fuse nose) than may be obvious.</span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:black'>Essentially something slightly different that adds to the learning curve, hopefully Charlie's experience and these discussions will prevent further occurrences.</span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='font-family:"Arial","sans-serif";color:black'>Earl</span><span style='color:black'><o:p></o:p></span></p></div></div><blockquote style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt;margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'><div><div><p class=MsoNormal style='background:white'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>----- Original Message ----- </span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:#E4E4E4'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> <a href="mailto:mikemueller@f3aunlimited.com" target="_blank" title="mikemueller@f3aunlimited.com">mike mueller</a> </span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>To:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> <a href="mailto:getterflash@yahoo.com" target="_blank" title="getterflash@yahoo.com">Bob Kane</a> ; <a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank" title="nsrca-discussion@lists.nsrca.org">General pattern discussion</a> </span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>Sent:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> Wednesday, December 05, 2012 8:26 AM</span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>Subject:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> Re: [NSRCA-discussion] Fw: Serious Torque on the Nose of the Model- RESUBMITTED</span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><div><p class=MsoNormal style='background:white'><span style='color:black'>Very cool video. I've learned a lot of neat things watching Youtube video's. Thanks Bob<o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><div><div><p class=MsoNormal style='background:white'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> Bob Kane <<a href="mailto:getterflash@yahoo.com" target="_blank">getterflash@yahoo.com</a>><br><b>To:</b> Generalpatterndiscussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">nsrca-discussion@lists.nsrca.org</a>> <br><b>Sent:</b> Wednesday, December 5, 2012 7:07 AM<br><b>Subject:</b> [NSRCA-discussion] Fw: Serious Torque on the Nose of the Model - RESUBMITTED</span><span style='color:black'><o:p></o:p></span></p></div></div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div><div id=yiv1683548014><div><div><div><div><p class=MsoNormal style='background:white'><span style='color:black'>Charlie was spot on with his comment on torque, but there are two torque vectors at work, the first is the obvious force required to turn the prop and the "equal but opposite" torque the motor transmits to it's mount. If that was all we had to worry about, the single mount would probably be fine. But there is the other torque (gyroscopic precession) resulting from attempting to move a rotating mass in the pitch or yaw axis. Here is a good youtube video demonstrating the effect . ... . <o:p></o:p></span></p></div></div><div><div><div id=yiv1683548014><div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'><a href="http://www.youtube.com/watch?v=ty9QSiVC2g0" target="_blank">http://www.youtube.com/watch?v=ty9QSiVC2g0</a><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'>Bob Kane<br><a href="mailto:getterflash@yahoo.com" target="_blank">getterflash@yahoo.com</a><o:p></o:p></span></p></div></div><div><div><div><div><p class=MsoNormal style='background:white'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> mike mueller <a href="mailto:mikemueller@f3aunlimited.com" target="_blank">mailto:mikemueller@f3aunlimited.com</a><br><b>To:</b> Bob Kane <a href="mailto:getterflash@yahoo.com" target="_blank">mailto:getterflash@yahoo.com</a> <br><b>Sent:</b> Tuesday, December 4, 2012 4:34 PM<br><b>Subject:</b> Re: [NSRCA-discussion] Serious Torque on the Nose of the Model - RESUBMITTED</span><span style='color:black'><o:p></o:p></span></p></div></div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div><div id=yiv1683548014><div><div><div><div><p class=MsoNormal style='background:white'><span style='color:black'>Say what?<o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'>"a large reactionary force called gyroscopic precession"<o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> I feel infinitlty smarter<o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> Is it violent warble?<o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> What prop were you running????<o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> Mike<o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><div><div><p class=MsoNormal style='background:white'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> Bob Kane <a href="mailto:getterflash@yahoo.com" target="_blank">mailto:getterflash@yahoo.com</a><br><b>To:</b> <a href="mailto:vicenterc@comcast.net" target="_blank">mailto:vicenterc@comcast.net</a> <a href="mailto:vicenterc@comcast.net" target="_blank">mailto:vicenterc@comcast.net</a>; General pattern discussion <a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">mailto:nsrca-discussion@lists.nsrca.org</a> <br><b>Sent:</b> Tuesday, December 4, 2012 7:54 AM<br><b>Subject:</b> Re: [NSRCA-discussion] Serious Torque on the Nose of the Model - RESUBMITTED</span><span style='color:black'><o:p></o:p></span></p></div></div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div><div id=yiv1683548014><div><div><div><div><p class=MsoNormal style='background:white'><span style='font-family:"Times","serif";color:black'>The Q80 has a large diameter rotating mass, and it brings with it a large reactionary force called gyroscopic precession when it is spinning. In laymen terms it will strongly resist changing direction in yaw or pitch. A rear brace would help keep this force in check. </span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'><br> <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='color:black'>Bob Kane<br><a href="mailto:getterflash@yahoo.com" target="_blank">getterflash@yahoo.com</a><o:p></o:p></span></p></div></div><div><div><div><div><p class=MsoNormal style='background:white'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> <a href="mailto:vicenterc@comcast.net" target="_blank">mailto:vicenterc@comcast.net</a> <a href="mailto:vicenterc@comcast.net" target="_blank">mailto:vicenterc@comcast.net</a><br><b>To:</b> General pattern discussion <a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">mailto:nsrca-discussion@lists.nsrca.org</a> <br><b>Sent:</b> Tuesday, December 4, 2012 8:27 AM<br><b>Subject:</b> Re: [NSRCA-discussion] Serious Torque on the Nose of the Model - RESUBMITTED</span><span style='color:black'><o:p></o:p></span></p></div></div><div style='margin-bottom:12.0pt'><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='color:black'><br>I understand that a rear brace is a must for this motor. <br><br>Vicente "Vince" Bortone<br>Sent via BlackBerry by AT&T<br><br>-----Original Message-----<br>From: "Charlie Barrera" <<a href="mailto:charliebarrera@consolidated.net" target="_blank">charliebarrera@consolidated.net</a>><br>Sender: <a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a><br>Date: Tue, 4 Dec 2012 07:02:47 <br>To: <<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">nsrca-discussion@lists.nsrca.org</a>><br>Reply-To: General pattern discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">nsrca-discussion@lists.nsrca.org</a>><br>Subject: [NSRCA-discussion] Serious Torque on the Nose of the Model -<br> RESUBMITTED<br><br>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></span></p></div></div></div></div></div></div><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='color:black'><br>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></span></p></div></div></div></div></div></div><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div></div></div></div><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div></div></div></div></div><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='color:black'><br>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></span></p></div></div></div></div><div><p class=MsoNormal style='background:white'><span style='color:black'>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>No virus found in this message.<br>Checked by AVG - <a href="http://www.avg.com/" target="_blank">http://www.avg.com/</a><br>Version: 2012.0.2221 / Virus Database: 2634/5437 - Release Date: 12/04/12<o:p></o:p></span></p></div></blockquote></div></div><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='color:black'><br>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></span></p></div></div></div></div><div><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='color:black'><br><br><o:p></o:p></span></p></div><pre style='background:white'><span style='color:black'>_______________________________________________<o:p></o:p></span></pre><pre style='background:white'><span style='color:black'>NSRCA-discussion mailing list<o:p></o:p></span></pre><pre style='background:white'><span style='color:black'><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><o:p></o:p></span></pre><pre style='background:white'><span style='color:black'><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></span></pre></blockquote><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='color:black'><br>_______________________________________________<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" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></span></p></div></div></div></div></body></html>