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<div><font style="background-color: transparent;">Charlie, buy a YS!... Juan</font></div>
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<div style="color: black; font-family: arial,helvetica; font-size: 10pt;">-----Original Message-----<br>
From: Charlie Barrera <charliebarrera@consolidated.net><br>
To: nsrca-discussion <nsrca-discussion@lists.nsrca.org><br>
Sent: Tue, Dec 4, 2012 8:03 am<br>
Subject: [NSRCA-discussion] Serious Torque on the Nose of the Model - RESUBMITTED<br>
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<div class="MsoNormal">I torqued the nose off of the fuselage of my WindS Pro. I have a 2 meter WindS Pro which I recently acquired from a good friend. The model is probably 2 years old and has close to 200 flights. The model had a contra rotating propeller power system installed before I acquired it. The nose section had been modified to accommodate zero degree down thrust and zero degree right thrust. I installed a new Hacker Q80 motor on the nose, attaching it to the nose ring. I did not reinforce the rear of the motor to the fuselage. I re-modified it for 2 1/2 degree right thrust and 1 degree down thrust. I reinforced it amply and was confident in the installation.</div>
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<div class="MsoNormal">I made a normal takeoff at about half throttle. As I turned to a right downwind, I powered up to about 3/4 throttle for my usual trim pass. I was in a right bank, and was rolling to the right. I heard a very loud "whack" noise. I continued my turn and only then did I realize that something had changed. I managed to land the model, not realizing that I had lost the motor. It was difficult landing because of the resultant aft CG. The fuselage was missing the first 4 inches. It was also very apparent that torque had sheared the motor off the fuselage. I theorize that the combination of the right roll and the power up caused a gyroscopic effect on the model, shearing the nose off the model.</div>
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<div class="MsoNormal">I wanted to share this to possibly alert others to a nose ring installation of their high power motors. Be aware of the forces that can be produced by these high torque motors. I don't know whether providing a rear brace on the installation would have made a difference. I don't think so. The fuselage was "torn" well behind where the rear brace would have been.</div>
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