<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div style="RIGHT: auto"><SPAN style="RIGHT: auto">Very cool video. I've learned a lot of neat things watching Youtube video's. Thanks Bob<VAR id=yui-ie-cursor></VAR><BR style="RIGHT: auto" class=yui-cursor></SPAN></div>
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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=hr contentEditable=false readonly="true"></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> Generalpatterndiscussion <nsrca-discussion@lists.nsrca.org> <BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Wednesday, December 5, 2012 7:07 AM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> [NSRCA-discussion] Fw: Serious Torque on the Nose of the Model - RESUBMITTED<BR></FONT></DIV><BR>
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<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>
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<DIV style="BACKGROUND-COLOR: transparent"><FONT face="times new roman, new york, times, serif">http://www.youtube.com/watch?v=ty9QSiVC2g0<BR></FONT></DIV>
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<DIV style="FONT-FAMILY: 'times new roman', 'new york', times, serif; FONT-SIZE: 12pt">Bob Kane<BR>getterflash@yahoo.com<BR></DIV>
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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=hr contentEditable=false readonly="true"></DIV><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>
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<DIV><SPAN>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>"a large reactionary force called gyroscopic precession"</SPAN></DIV>
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<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> 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> 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> Mike<VAR id=yiv1253724780yui-ie-cursor></VAR></SPAN></DIV>
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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=yiv1253724780hr></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>
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<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>
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<DIV style="FONT-FAMILY: 'times new roman', 'new york', times, serif; FONT-SIZE: 12pt">Bob Kane<BR>getterflash@yahoo.com<BR></DIV>
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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=yiv1253724780hr></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
href="mailto:charliebarrera@consolidated.net" rel=nofollow target=_blank ymailto="mailto:charliebarrera@consolidated.net">charliebarrera@consolidated.net</A>><BR>Sender: <A href="mailto:nsrca-discussion-bounces@lists.nsrca.org" rel=nofollow target=_blank ymailto="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 href="mailto:nsrca-discussion@lists.nsrca.org" rel=nofollow target=_blank ymailto="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</A>><BR>Reply-To: General pattern discussion <<A href="mailto:nsrca-discussion@lists.nsrca.org" rel=nofollow target=_blank ymailto="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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