<div dir="ltr">Thanks ??? guys:<div>I ask about centering and it costs me $300 replace with adequate servos! LOL</div><div>Seriously, appreciate the advice.</div><div>Dan</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 13, 2017 at 6:35 PM, David Harmon via NSRCA-discussion <span dir="ltr"><<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">nsrca-discussion@lists.nsrca.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="white" lang="EN-US" link="blue" vlink="purple"><div class="m_-2146807729733113824WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d">I had a serious problem with aluminum arms on certain JR servos…..the bag works very well.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d">Just hold a piece over the spline and press down on the arm….fixed.<u></u><u></u></span></p><div><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d"><u></u> <u></u></span></b></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d">David Harmon<u></u><u></u></span></b></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d">Sperry, OK<u></u><u></u></span></b></p></div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Comic Sans MS";color:#1f497d"><u></u> <u></u></span></p><div><div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"> NSRCA-discussion [mailto:<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank">nsrca-discussion-<wbr>bounces@lists.nsrca.org</a>] <b>On Behalf Of </b>John Gayer via NSRCA-discussion<br><b>Sent:</b> Monday, February 13, 2017 1:57 PM<br><b>To:</b> General pattern discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">nsrca-discussion@lists.nsrca.<wbr>org</a>><br><b>Subject:</b> Re: [NSRCA-discussion] Futaba BLS173SV centering problem<u></u><u></u></span></p></div></div><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt">Take a small piece of a plastic bag and sandwich it between the splines and the output arm. That will reduce/eliminate the slop. Some plastic arms don't fit right either.<u></u><u></u></p><div><p class="MsoNormal">On 2/13/2017 12:43 PM, Earl Haury via NSRCA-discussion wrote:<u></u><u></u></p></div><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><div><div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Dan<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">�<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">I find that 0.13 dead band works well. Gear wear isn�t usually a problem with the 173, the Futaba aluminum arms don�t fit the splines tightly though � you might check this if using these arms. Lots of folks use the 173 on bipe ailerons (which tend to be smaller). Some time ago I measured servo current draw on each surface and ailerons were by far the highest � as Peter notes, big surface. At 7.5v they might be OK, I use the BLS171 which has 60 or so more oz-in torque. I�ve also found that servos slow a fair bit whenever current draw exceeds 60% of stall current � another reason to err on the high side.<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">�<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Earl<u></u><u></u></span></p></div><div><div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">�<u></u><u></u></span></p></div><div><div><p class="MsoNormal" style="background:whitesmoke"><b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"> Daniel Underkofler via NSRCA-discussion <u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:whitesmoke"><b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">Sent:</span></b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"> Monday, February 13, 2017 11:58 AM<u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:whitesmoke"><b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">To:</span></b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"> NSRCA <u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:whitesmoke"><b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">Subject:</span></b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"> [NSRCA-discussion] Futaba BLS173SV centering problem<u></u><u></u></span></p></div></div></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">�<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Guys, <u></u><u></u></span></p><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">I'm new to Futaba programable servos.� Have new BLS173SV on ailerons and have a bit of "slop" in the servo output.� I'm confident that the majority of the slop is in the servo, not the linkage.� <u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">�<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Should I need to replace gears after only a couple hundred flights?� Hard to tell, but seems like there is too much slop with power off, so adjusting settings may not be the answer.� Can't find the gearset on Futaba or Tower website anyway.� Anybody know the part number and how/where to order?<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">�<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">I was going to try reducing the deadband from .36 to .20.<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Recommendations on programable parameter settings improve centering?<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">�<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Thanks,� Dan<u></u><u></u></span></p></div></div><div class="MsoNormal" align="center" style="text-align:center"><span style="font-family:"Calibri",sans-serif;color:black"><hr size="2" width="100%" align="center"></span></div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">______________________________<wbr>_________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.<wbr>org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/<wbr>mailman/listinfo/nsrca-<wbr>discussion</a><u></u><u></u></span></p></div></div></div><p class="MsoNormal"><br><br><br><u></u><u></u></p><pre>______________________________<wbr>_________________<u></u><u></u></pre><pre>NSRCA-discussion mailing list<u></u><u></u></pre><pre><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.<wbr>org</a><u></u><u></u></pre><pre><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/<wbr>mailman/listinfo/nsrca-<wbr>discussion</a><u></u><u></u></pre></blockquote><p class="MsoNormal"><u></u> <u></u></p></div></div><br>______________________________<wbr>_________________<br>
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