<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2900.2963" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Tommy</FONT></DIV>
<DIV><FONT face=Arial size=2>Please contact me off list.</FONT></DIV>
<DIV><FONT face=Arial size=2> <U><FONT
color=#008000>natpenton@centurytel.net</FONT></U></FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=tretas513@yahoo.com href="mailto:tretas513@yahoo.com">Tommy
Scarmardo</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, August 24, 2006 12:35
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] DS 8411sa
Servo Oscillation on Rudder</DIV>
<DIV><BR></DIV>
<DIV>I have used 8411sa's on three different airplanes so far without any
issues I don't</DIV>
<DIV>know if it makes any difference but I used round Hanger 9 servo wheels on
the servo</DIV>
<DIV>with stainless control line cable instead of the regular servo arms. The
round wheel</DIV>
<DIV>makes the non pulling wire have slightly less tension when the rudder is
moved. It</DIV>
<DIV>doesn't get loose, just very slightly less. Maybe less wear on the servo
??</DIV>
<DIV> </DIV>
<DIV>tommy s<BR><BR><B><I>jonlowe@aol.com</I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Thanks
to all who responded. I will try the o-ring/rubberband trick, <BR>though I
HATE to add friction! The surface is definitely not heavy in <BR>this
instance, (I have a heavy Impact rudder that I won't use, so I <BR>know what
that is like).<BR><BR>I sent one servo back to Horizon. We will see how it
does when I get <BR>it back. I just got an 8611 I will stick in it for the
time being. I <BR>WAS using Hitec 5945's digital coreless' on rudder, but I
thought I'd <BR>move up! Oh, well!<BR><BR>From all of the replies, it sounds
like this is a chronic issue with <BR>the 8411s used on rudder,
unfortunately.<BR><BR>Thanks again,<BR><BR>Jon<BR><BR>-----Original
Message-----<BR>From: bob@toprudder.com<BR>To:
nsrca-discussion@lists.nsrca.org<BR>Sent: Thu, 24 Aug 2006 9:53
AM<BR>Subject: Re: [NSRCA-discussion] DS 8411sa Servo Oscillation on
Rudder<BR><BR>Dave,<BR> <BR>There is deadband, and there is dampening.
Sounds like the problem, as <BR>it is related to heavy control surfaces, is
dampening.<BR> <BR>I remember reading Jim Oddino's column in RCM many
years ago, where he <BR>touched on this subject. (I always looked forward to
his column, as I <BR>was just getting into electronics at that
time).<BR> <BR>Bob R.<BR><BR><BR>DaveL322@comcast.net
wrote:<BR>Jon,<BR> <BR>It is basically a "deadband" issue, which is
always a compromise <BR>- tighter deadband yields more accurate
centering but increases the <BR>probability of oscillation (especially with
heavy surfaces as has been <BR>noted).<BR> <BR>Since introduced, there
have been some minor changes to 8411, but <BR>Horizon should be able to
increase the deadband for you.<BR> <BR>Regards,<BR><BR>Dave Lockhart,
Team
JR<BR>DaveL322@comcast.net<BR><BR>_______________________________________________<BR>NSRCA-discussion
mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR><BR>________________________________________________________________________<BR>Check
out AOL.com today. Breaking news, video search, pictures, email <BR>and IM.
All on demand. Always
Free.<BR><BR>_______________________________________________<BR>NSRCA-discussion
mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</BLOCKQUOTE><BR>
<P>
<HR SIZE=1>
<A
href="http://us.rd.yahoo.com/evt=43256/*http://advision.webevents.yahoo.com/mailbeta">All-new
Yahoo! Mail </A>- Fire up a more powerful email and get things done faster.
<P>
<HR>
<P></P>_______________________________________________<BR>NSRCA-discussion
mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
<P>
<HR>
<P></P>No virus found in this incoming message.<BR>Checked by AVG Free
Edition.<BR>Version: 7.1.405 / Virus Database: 268.11.4/424 - Release Date:
8/21/2006<BR></BLOCKQUOTE></BODY></HTML>