<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Chad,<div class=""><br class=""></div><div class="">I totally agree. Just like receivers with stabilization. If they weren’t illegal in competition I believe they’d have significantly better performance by now. Pattern used to lead the way in technical development but the rules seem to be designed to kill progress in some areas. I thought the object is to fly better.</div><div class=""><br class=""></div><div class="">Jim<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jun 7, 2020, at 12:08 PM, Chad Northeast via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" class="">nsrca-discussion@lists.nsrca.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="content-type" content="text/html; charset=utf-8" class=""><div dir="auto" class="">So many of us (myself included) flew these at the WC in 2019, and there were many events in Europe that allowed their use. ……….<br class=""><div class=""><br class=""></div><div class=""><b class="">It would be a great shame to make these sorts of innovations illegal as ultimately it will stifle creativity and has zero bearing on the results. Everyone has access to them, so its a level playing field, the best pilot will rise to the top as usual.</b></div><div class=""><br class=""></div><div class="">Chad</div><div class=""><br class=""><div dir="ltr" class="">Sent from my iPad</div><div dir="ltr" class=""><br class=""><blockquote type="cite" class="">On Jun 7, 2020, at 12:34 PM, Tjpritchett <<a href="mailto:tjpritchett@aol.com" class="">tjpritchett@aol.com</a>> wrote:<br class=""><br class=""></blockquote></div><blockquote type="cite" class=""><div dir="ltr" class=""><meta http-equiv="content-type" content="text/html; charset=utf-8" class="">As I was reading this thread, I was wondering how a self regulating speed control might fit within the current competition regulations. We’ve considered the gyro/ stabilization debate before, and that issue is pretty clear, since the relevant rule was written after gyro control was already available. <div class="">This capability, prop rpm, was not really around until now, and may need to be evaluated more carefully against existing rules. The most relevant I could find is copied and posted below, from the 2020-2021 AMA Competition Regulations, 4.4.2. Point number 3 seems particularly relevant. </div><div class="">What do you think?</div><div class=""><div class=""><br class=""></div><div class=""><div class="">Examples of control functions not allowed:</div><div class="">1. Preprogramming that will automatically perform a series of commands based on a timeline.</div><div class="">2. Automatic leveling or electronic stabilization in any axis.</div><div class="">3. Power plant management systems that adjust power with regards to model performance, position or attitude.</div><div class="">4. Positioning systems utilizing any sensors such as air data, GPS, distance, etc.</div><div class="">5. Learning functions involving maneuver-to-maneuver or flight-to-flight analysis.</div><br class=""><div class="">Sent from my iPhone</div><div class=""><br class="">On Jun 7, 2020, at 1:11 PM, flyintexanmark via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" class="">nsrca-discussion@lists.nsrca.org</a>> wrote:<br class=""><br class=""></div><blockquote type="cite" class=""><div class=""><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" class="">A slight tweak in kv and a d3 should allow use of a ys200 prop. The right throttle curve and it may be possible to get Bryan Hebert to fly electric :)<div dir="auto" class=""><br class=""></div><div dir="auto" class="">Seriously it seems more possible now than ever to emulate a YS.<br class=""><div dir="auto" class=""><br class=""></div><div dir="auto" class=""><br class=""></div></div><div class=""><br class=""></div><div style="font-size: 100%;" dir="auto" class=""><!-- originalMessage --><div class="">-------- Original message --------</div><div class="">From: Chad Northeast via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" class="">nsrca-discussion@lists.nsrca.org</a>> </div><div class="">Date: 6/7/20 9:27 AM (GMT-06:00) </div><div class="">To: <a href="mailto:nsrca-discussion@lists.nsrca.org" class="">nsrca-discussion@lists.nsrca.org</a> </div><div class="">Subject: Re: [NSRCA-discussion] Plettenberg Advance 30-10 ESC - Questions </div><div class=""><br class=""></div></div>I will chime in my 2 cents on the Pletty. I have used the Jeti Spin 99 and the Futaba 9100 (same as OS 1100) and the D3, all of them without issues so I think you are safe with those for sure. I have not used the CC or the Jeti Mezon, but I imagine the Mezon is like the Spin. There is no issue taking a Pletty Advance to 90A, and no issues for big props, in fact the bigger the better. I use a 22-13, which hits around 85A and 6300 RPM on the ground, any prop made you can run on the motor depending on what you like.<div class=""><br class=""></div><div class="">Braking has always been an issue, even with the Jeti/Futaba ESC braking set I have never been able to get it “perfect” where its good in downlines and in 45’s etc, there always seemed to be a compromise. Propellor selection had some impact, I found APC’s brake better than a Falcon on their own so that helped to get the balance better at least for my style.</div><div class=""><br class=""></div><div class="">This is where the D3 shines (braking/constant speed), I think blows the doors off every other controller made. It is a total re-learn of how you fly, but once you get it I don't think you would want to go back. For those that don't know, the D3 is produced just for pattern and is custom to every motor, so you order for the motor you want. There is no programming, no telemetry, nothing really, you just put it in the model setup your tx and fly. It is a governor controller so setting up your RPM is absolutely critical, if you get it wrong you will not have great results and likely struggle with it. However the ability to get constant speed is very good, it really turned the Pletty into a setup that has braking as good as anything else IMO. It manages power for you in a lot of cases, for instance as you pull vertical and the models starts to slow down and load the prop the esc will apply power to maintain rpm, so you don't need to throttle up much, maybe 2 clicks on the stick.</div><div class=""><br class=""></div><div class="">Some of the adjustments you need to get used to, generally you want to start throttling up prior to pulling the exit radius, as the esc is always maintaining rpm of the motor you dont have that freewheel to help carry speed out of an exit. So if you don't throttle up early you will really lose airspeed. Mostly in looping elements you actually never need to really come to a full idle, as the esc is essentially braking all the time to maintain the rpm based on your stick position.</div><div class=""><br class=""></div><div class="">I have also found it very efficient consumption wise, as good or better than the Futaba/Jeti’s that I have used prior. Some really nice side benefits, it is light ~70g and inexpensive.</div><div class=""><br class=""></div><div class="">Below is a chart of rx output and motor rpm for the Pletty, personally I use 950 rpm for landing, 1950 rpm for normal flight (downline idle), and 5600 rpm at my midstick position. In case it doesn’t show up properly, one column is % of output, one column is us output of rx (0 - 2000 us) and last is motor rpm.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">
<table border="0" cellpadding="0" cellspacing="0" width="276" style="border-collapse:
collapse;width:207pt" class="">
<!--StartFragment-->
<colgroup class=""><col width="92" span="3" style="width:69pt" class="">
</colgroup><tbody class=""><tr height="17" style="height:13.0pt" class="">
<td height="17" class="xl63" align="right" width="92" style="height:13.0pt;
width:69pt">100.00%</td>
<td align="right" width="92" style="width:69pt" class="">2000</td>
<td align="right" width="92" style="width:69pt" class="">6700</td>
</tr>
<tr height="17" style="height:13.0pt" class="">
<td height="17" class="xl63" align="right" style="height:13.0pt">90.00%</td>
<td align="right" class="">1800</td>
<td align="right" class="">6030</td>
</tr>
<tr height="17" style="height:13.0pt" class="">
<td height="17" class="xl63" align="right" style="height:13.0pt">80.00%</td>
<td align="right" class="">1600</td>
<td align="right" class="">5360</td>
</tr>
<tr height="17" style="height:13.0pt" class="">
<td height="17" class="xl63" align="right" style="height:13.0pt">70.00%</td>
<td align="right" class="">1400</td>
<td align="right" class="">4690</td>
</tr>
<tr height="17" style="height:13.0pt" class="">
<td height="17" class="xl63" align="right" style="height:13.0pt">60.00%</td>
<td align="right" class="">1200</td>
<td align="right" class="">4020</td>
</tr>
<tr height="17" style="height:13.0pt" class="">
<td height="17" class="xl63" align="right" style="height:13.0pt">50.00%</td>
<td align="right" class="">1000</td>
<td align="right" class="">3350</td>
</tr>
<tr height="17" style="height:13.0pt" class="">
<td height="17" class="xl63" align="right" style="height:13.0pt">40.00%</td>
<td align="right" class="">800</td>
<td align="right" class="">2680</td>
</tr>
<tr height="17" style="height:13.0pt" class="">
<td height="17" class="xl63" align="right" style="height:13.0pt">30.00%</td>
<td align="right" class="">600</td>
<td align="right" class="">2010</td>
</tr>
<tr height="17" style="height:13.0pt" class="">
<td height="17" class="xl63" align="right" style="height:13.0pt">20.00%</td>
<td align="right" class="">400</td>
<td align="right" class="">1340</td>
</tr>
<tr height="17" style="height:13.0pt" class="">
<td height="17" class="xl63" align="right" style="height:13.0pt">10.00%</td>
<td align="right" class="">200</td>
<td align="right" class="">670</td>
</tr>
<tr height="17" style="height:13.0pt" class="">
<td height="17" class="xl63" align="right" style="height:13.0pt">0.00%</td>
<td align="right" class="">0</td>
<td align="right" class="">0</td>
</tr>
<!--EndFragment-->
</tbody></table></div></div></blockquote><blockquote type="cite" class=""><div class=""><span class="">_______________________________________________</span><br class=""><span class="">NSRCA-discussion mailing list</span><br class=""><span class=""><a href="mailto:NSRCA-discussion@lists.nsrca.org" class="">NSRCA-discussion@lists.nsrca.org</a></span><br class=""><span class=""><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" class="">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a></span></div></blockquote></div></div></div></blockquote></div></div>_______________________________________________<br class="">NSRCA-discussion mailing list<br class=""><a href="mailto:NSRCA-discussion@lists.nsrca.org" class="">NSRCA-discussion@lists.nsrca.org</a><br class="">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</div></blockquote></div><br class=""></div></body></html>