<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
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