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<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D">In addition, . . . if your calibration weights were calibrated on Eglin AFB (elevation 84 ft MSL), they will measure a different weight in Blytheville, AR (elevation
255.7 ft MSL) due to the relative distance to the center of the earth.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D">See how much easier all of this would be if we ditched the weight rule?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D">-Keith Hoard<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D">-klhoard@outlook.com<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> NSRCA-discussion [mailto:nsrca-discussion-bounces@lists.nsrca.org]
<b>On Behalf Of </b>Ronald Van Putte via NSRCA-discussion<br>
<b>Sent:</b> Friday, January 27, 2017 4:52 PM<br>
<b>To:</b> General pattern discussion <nsrca-discussion@lists.nsrca.org><br>
<b>Subject:</b> Re: [NSRCA-discussion] Airplane Weight<o:p></o:p></span></p>
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<p class="MsoNormal">That’s right! The Earth is an oblate spheroid. Gotta factor that in.<o:p></o:p></p>
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<p class="MsoNormal">Ron<o:p></o:p></p>
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<p class="MsoNormal">On Jan 27, 2017, at 4:34 PM, Keith Hoard via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">The rules also seem to neglect that gravity is not truly consistent at every place on the planet. Perhaps that needs to be addressed in an upcoming rules cycle?</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">https: // <a href="http://en.wikipedia.org/"><span style="color:purple">en.wikipedia.org</span></a> /wiki /Gravity_of_Earth</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span class="apple-converted-space"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> </span></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">NSRCA-discussion
[<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org"><span style="color:purple">mailto:nsrca-discussion-bounces@lists.nsrca.org</span></a>]<span class="apple-converted-space"> </span><b>On Behalf Of<span class="apple-converted-space"> </span></b>Vogel,
Peter via NSRCA-discussion<br>
<b>Sent:</b><span class="apple-converted-space"> </span>Friday, January 27, 2017 4:27 PM<br>
<b>To:</b><span class="apple-converted-space"> </span>Ronald Van Putte <<a href="mailto:vanputter@gmail.com"><span style="color:purple">vanputter@gmail.com</span></a>>; General pattern discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org"><span style="color:purple">nsrca-discussion@lists.nsrca.org</span></a>><br>
<b>Subject:</b><span class="apple-converted-space"> </span>Re: [NSRCA-discussion] Airplane Weight</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif">The "inconsistencies" are the inconsistencies between the pilots weighing equipment at home and the weighing equipment
used at the contest. </span><span style="font-size:10.5pt;font-family:"ArialMS",serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif"> </span><span style="font-size:10.5pt;font-family:"ArialMS",serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif">So, if you count on your equipment being "dead accurate" and come with a 5050g airplane knowing it's 5050g, and the
scales at the venue are off on the slightly heavy side, you will, in fact, be too heavy. This, in fact, happened to Joseph at the last worlds, he knew he was heavy with that set of batteries, and the scale caught him.</span><span style="font-size:10.5pt;font-family:"ArialMS",serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif">The LIMIT is 5000g, the tolerance is there in case your scales or the venue's scales are a little bit off. The limit
is not 5050g.</span><span style="font-size:10.5pt;font-family:"ArialMS",serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif">Peter+</span><span style="font-size:10.5pt;font-family:"ArialMS",serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span class="apple-converted-space"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> </span></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">NSRCA-discussion
<<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org"><span style="color:purple">nsrca-discussion-bounces@lists.nsrca.org</span></a>> on behalf of Ronald Van Putte via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org"><span style="color:purple">nsrca-discussion@lists.nsrca.org</span></a>><br>
<b>Sent:</b><span class="apple-converted-space"> </span>Friday, January 27, 2017 2:02:57 PM<br>
<b>To:</b><span class="apple-converted-space"> </span>General pattern discussion<br>
<b>Subject:</b><span class="apple-converted-space"> </span>Re: [NSRCA-discussion] Airplane Weight</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Typo in second paragraph. Should have been 5000gm, not 50000gm. Sorry.<br>
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Ron<span class="apple-converted-space"> </span><br>
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> On Jan 27, 2017, at 3:57 PM, Ronald Van Putte via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org"><span style="color:purple">nsrca-discussion@lists.nsrca.org</span></a>> wrote:<br>
><span class="apple-converted-space"> </span><br>
> Something has been nagging me since the 2011 F3A World Championships. The decision was made, over the objections of the official weighers (John Fuqua and me), that airplanes would be allowed to weigh 1% more than the listed maximum weight of 50000gm, or
50gm.<br>
><span class="apple-converted-space"> </span><br>
> The argument was that it “allowed for possible inconsistencies in measuring equipment”. We objected because we had purchased calibration weights and had them verified by the Precision Measurement Equipment Laboratory on Eglin AFB (at the cost of a sixpack
of beer per set of calibration weights). That meant we knew exactly what the airplanes weighed.<br>
><span class="apple-converted-space"> </span><br>
> Now to the current situation. Currently, AMA classes have a 1% weight tolerance, or 50gm. Suppose a contestant’s model actually weighs 5050gm, but the weighing equipment is in error by 25 grams. So the scales would measure the contestant’s airplane at
5075gm. Remember that the 15 allowance is for "possible inconsistencies in measuring equipment”. The contestant’s airplane is “too heavy”.<br>
><span class="apple-converted-space"> </span><br>
> Something to think about.<br>
><span class="apple-converted-space"> </span><br>
> Ron Van Putte<br>
> _______________________________________________<br>
> NSRCA-discussion mailing list<br>
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