<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span style="font-size: 12pt;">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 . .. . </span><br></div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"><div id="yiv1527044011"><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);
font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;"><font face="times new roman, new york, times, serif"><br></font></div><div style="
background-color:transparent;"><font face="times new roman, new york, times, serif">http://www.youtube.com/watch?v=ty9QSiVC2g0<br></font></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; font-style: normal;"><br></div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"></div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"> </div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;">Bob Kane<br>getterflash@yahoo.com<br></div> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"> <div dir="ltr"> <font size="2" face="Arial"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> mike mueller
<mikemueller@f3aunlimited.com><br>
<b><span style="font-weight:bold;">To:</span></b> Bob Kane <getterflash@yahoo.com> <br> <b><span style="font-weight:bold;">Sent:</span></b> Tuesday, December 4, 2012 4:34 PM<br> <b><span style="font-weight:bold;">Subject:</span></b> Re: [NSRCA-discussion] Serious Torque on the Nose of the Model - RESUBMITTED<br> </font> </div> <br>
<div id="yiv1527044011"><div><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"><div style=""><span style="">Say what?</span></div>
<div style="background-color: transparent; font-style: normal; font-family: 'times new roman', 'new york', times, serif; color: rgb(0, 0, 0); font-size: 16px;"><span style="">"a large reactionary force called gyroscopic precession"</span></div>
<div style="background-color: transparent; font-style: normal; font-family: 'times new roman', 'new york', times, serif; color: rgb(0, 0, 0); font-size: 16px;"><span style=""> I feel infinitlty smarter</span></div>
<div style="background-color: transparent; font-style: normal; font-family: 'times new roman', 'new york', times, serif; color: rgb(0, 0, 0); font-size: 16px;"><span style=""> Is it violent warble?</span></div>
<div style="background-color: transparent; font-style: normal; font-family: 'times new roman', 'new york', times, serif; color: rgb(0, 0, 0); font-size: 16px;"><span style=""> What prop were you running????</span></div>
<div style="background-color: transparent; font-style: normal; font-family: 'times new roman', 'new york', times, serif; color: rgb(0, 0, 0); font-size: 16px;"><span style=""> Mike<var id="yiv1527044011yui-ie-cursor"></var></span></div>
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<div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;">
<div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;">
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<div style="BORDER-BOTTOM:#ccc 1px solid;BORDER-LEFT:#ccc 1px solid;PADDING-BOTTOM:0px;LINE-HEIGHT:0;MARGIN:5px 0px;PADDING-LEFT:0px;PADDING-RIGHT:0px;HEIGHT:0px;FONT-SIZE:0px;BORDER-TOP:#ccc 1px solid;BORDER-RIGHT:#ccc 1px solid;PADDING-TOP:0px;" class="yiv1527044011hr"></div><b><span style="FONT-WEIGHT:bold;">From:</span></b> Bob Kane <getterflash@yahoo.com><br><b><span style="FONT-WEIGHT:bold;">To:</span></b> "vicenterc@comcast.net" <vicenterc@comcast.net>; General pattern discussion <nsrca-discussion@lists.nsrca.org> <br><b><span style="FONT-WEIGHT:bold;">Sent:</span></b> Tuesday, December 4, 2012 7:54 AM<br><b><span style="FONT-WEIGHT:bold;">Subject:</span></b> Re: [NSRCA-discussion] Serious Torque on the Nose of the Model - RESUBMITTED<br></font></div><br>
<div id="yiv1527044011">
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<div style="background-color: rgb(255, 255, 255); font-family: 'times new roman', 'new york', times, serif; color: rgb(0, 0, 0); font-size: 12pt;">
<div><span><font size="3" face="times new roman, new york, times, serif">The Q80 has a large </font><font face="times new roman, new york, times, serif">diameter</font><font size="3" face="times new roman, new york, times, serif"> 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. </font></span></div>
<div style="background-color: transparent; font-style: normal; font-family: 'times new roman', 'new york', times, serif; color: rgb(0, 0, 0); font-size: 16px;"><span><font size="3" face="times new roman, new york, times, serif"><br></font></span></div>
<div style="BACKGROUND-COLOR:transparent;FONT-STYLE:normal;FONT-FAMILY:'times
new roman', 'new york', times, serif;COLOR:rgb(0,0,0);FONT-SIZE:16px;"><span style="FONT-SIZE:12pt;"> </span><br></div>
<div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;">Bob Kane<br>getterflash@yahoo.com<br></div>
<div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;">
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<div style="BORDER-BOTTOM:#ccc 1px solid;BORDER-LEFT:#ccc 1px solid;PADDING-BOTTOM:0px;LINE-HEIGHT:0;MARGIN:5px 0px;PADDING-LEFT:0px;PADDING-RIGHT:0px;HEIGHT:0px;FONT-SIZE:0px;BORDER-TOP:#ccc 1px solid;BORDER-RIGHT:#ccc 1px solid;PADDING-TOP:0px;" class="yiv1527044011hr"></div><b><span style="FONT-WEIGHT:bold;">From:</span></b> "vicenterc@comcast.net" <vicenterc@comcast.net><br><b><span style="FONT-WEIGHT:bold;">To:</span></b> General pattern discussion <nsrca-discussion@lists.nsrca.org> <br><b><span style="FONT-WEIGHT:bold;">Sent:</span></b> Tuesday, December 4, 2012 8:27 AM<br><b><span style="FONT-WEIGHT:bold;">Subject:</span></b> Re: [NSRCA-discussion] Serious Torque on the Nose of the Model - RESUBMITTED<br></font></div><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 rel="nofollow" ymailto="mailto:charliebarrera@consolidated.net" target="_blank" href="mailto:charliebarrera@consolidated.net">charliebarrera@consolidated.net</a>><br>Sender: <a rel="nofollow" ymailto="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank" href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</a><br>Date: Tue, 4 Dec 2012 07:02:47 <br>To: <<a rel="nofollow" ymailto="mailto:nsrca-discussion@lists.nsrca.org" target="_blank" href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>><br>Reply-To: General pattern discussion <<a rel="nofollow" ymailto="mailto:nsrca-discussion@lists.nsrca.org" target="_blank" href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>><br>Subject: [NSRCA-discussion] Serious Torque on the Nose of the Model -<br>
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