AW: REFLECTOR:STEC 30 autopilot
Donald Royer
reflector@tvbf.org
Wed, 9 Jul 2003 21:39:35 -0600
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This has been covered in detail some time ago on the Reflector. If you will check the archives, you will find that the solution goes all the way back to Tim Crawford's early work on N6Q. To prevent the osculations, the gain in the servos must be reduced either mechanically or electronically.
My roll servo works perfectly with not electronic modification at all. I simply discarded the arm that was sent to go on the servo and connected the link to the bell crank to the servo using one of the holes that was supposed hold the arm. It works with no feedback problems at all. I did add mechanical stops to prevent the servo from going "over center". I have it set up so that an 180 degree rotation of the servo takes the aileron from full up to full down. In all of the conditions that I have tried so far, the unit tracks true with no osculation and not noticeable slop.
Don Royer
----- Original Message -----
From:
To: reflector@tvbf.org
Sent: 7/9/03 4:02:07 PM
Subject: Re: AW: REFLECTOR:STEC 30 autopilot
In a message dated 7/9/03 5:37:59 PM Eastern Daylight Time, ueli@christen-air.ch writes:
www.christen-air.ch
Jack, The arrangement Ueli fashioned functions like mine, though the design is a bit more elegant. It simply introduces a bit of slack into the control and then allows the STEC servo to cycle slowly within the slack range.
Bob
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<DIV><FONT face="MS Sans Serif" size=2>This has been covered in detail some time ago on the Reflector. If you will check the archives, you will find that the solution goes all the way back to Tim Crawford's early work on N6Q. To prevent the osculations, the gain in the servos must be reduced either mechanically or electronically. </FONT></DIV>
<DIV> </DIV>
<DIV>My roll servo works perfectly with not electronic modification at all. I simply discarded the arm that was sent to go on the servo and connected the link to the bell crank to the servo using one of the holes that was supposed hold the arm. It works with no feedback problems at all. I did add mechanical stops to prevent the servo from going "over center". I have it set up so that an 180 degree rotation of the servo takes the aileron from full up to full down. In all of the conditions that I have tried so far, the unit tracks true with no osculation and not noticeable slop.</DIV>
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<DIV>Don Royer</DIV>
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<DIV style="FONT: 10pt Arial">----- Original Message ----- </DIV>
<DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=SlvEgl99@aol.com href="mailto:SlvEgl99@aol.com"></A></DIV>
<DIV style="FONT: 10pt arial"><B>To: </B><A title=reflector@tvbf.org href="mailto:reflector@tvbf.org">reflector@tvbf.org</A></DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> 7/9/03 4:02:07 PM </DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: AW: REFLECTOR:STEC 30 autopilot</DIV>
<DIV><BR></DIV><FONT size=2><FONT face=arial,helvetica><FONT lang=0 face=Arial size=2 FAMILY="SANSSERIF">In a message dated 7/9/03 5:37:59 PM Eastern Daylight Time, ueli@christen-air.ch writes:<BR><BR>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px" TYPE="CITE">www.christen-air.ch </BLOCKQUOTE><BR><BR>Jack, The arrangement Ueli fashioned functions like mine, though the design is a bit more elegant. It simply introduces a bit of slack into the control and then allows the STEC servo to cycle slowly within the slack range.<BR><BR>Bob</FONT> </FONT></FONT></BLOCKQUOTE></BODY></HTML>
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