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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">“Equality for all Pattern planes!!” regardless of their race, nationality, gender identification or power source, I say!!</p>
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<p class="MsoNormal">Sent from my Windows 10 phone</p>
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<p class="MsoNormal" style="border:none;padding:0in"><b>From: </b><a href="mailto:nsrca-discussion@lists.nsrca.org">Ronald Van Putte via NSRCA-discussion</a><br>
<b>Sent: </b>Friday, January 27, 2017 13:00<br>
<b>To: </b><a href="mailto:nsrca-discussion@lists.nsrca.org">General pattern discussion</a><br>
<b>Subject: </b>Re: [NSRCA-discussion] Weight History</p>
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<div>That is very interesting.
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<div class="">However, I still fail to see the logic that allows glow-powered airplanes to be weighed without fuel, but requires electric-powered airplanes to be weighed with batteries. </div>
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<div class="">I think we should have a rule that both glow-powered and electric-powered airplanes should be weighed in their takeoff configuration. </div>
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<div class="">Ron Van Putte</div>
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<div class="">On Jan 27, 2017, at 12:47 PM, John Fuqua via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" class="">nsrca-discussion@lists.nsrca.org</a>> wrote:</div>
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It is interesting to look back at the history of weight and displacement limits. <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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Up until 1966 there were no engine displacement limits and allowable weight was 15 pounds. <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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In 1966 a .61 cubic inch displacement limit was imposed with an allowable weight of 15 pounds. Of course nobody could weigh that much and have any performance given the displacement limit. <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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In 1980 a weight limit of 5 kg was implemented but again nobody wanted to be that heavy because of power limitation. <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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In 1984 the limit for 4 strokes was raised to 1.20 cu inches and airplanes started to change. <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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In 1992 a noise limit was imposed.<o:p class=""></o:p></div>
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In 1994 engine displacement limits were eliminated and 4 strokes ruled until the electric era.<o:p class=""></o:p></div>
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In 1996 the 2 meter rule was introduced.<o:p class=""></o:p></div>
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Each change brought about airplane changes. Bigger, more power but still at 5 kg.<o:p class=""></o:p></div>
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So for 37 years (1980 until now) the weight limit has been the same. Seems to me like we adapted pretty well over the years.<o:p class=""></o:p></div>
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John Fuqua<o:p class=""></o:p></div>
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cell 850-974-6655<o:p class=""></o:p></div>
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