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<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>Hello
Bob,</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>Go buy
some DuBro # 867 control horns. They have almost 3/4" of overhang between the
bolt and the little hole for the clevis, in the little screw-on
pieces.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>Use
those pieces, but set the bolt and nut aside, and see if the little holes line
up with the center of the hinges.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>If
not, then drill new holes in the black plastic bits so that they do line
up: one straight line through both holes and the center of the
hinge.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>Now
when you get the horns all the same length, it will be much easier to get the
throws matched in both directions.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>This
is absolutely necessary for matching two elevator halves properly, but is also a
good idea for rudders.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>The
problem with the stock setup is that the cables slacken at the ends, and
tighten at neutral.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>While
this might sound like a good thing, it is awful: the servo has to fight the
tightening cables as the surface comes closer to neutral,</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>then
as it gets there, the surface may try to "spring" to the opposite
direction.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>The
servo and gear train will prematurely beat themselves up chasing this
problem.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>You
want the cable tension to be almost constant throughout the
throw.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>There
will be pictures of this when I get the Excelleron review out the
door.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>One of
the previous posts pointed to a website that showed the proper
geometry.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>DuBro
and Rocket City both make parts that are useful, for this
problem.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff size=2>Check
DuBro.com and put #867 into their search engine, you can see the lonng
overhang part. It's either 5/8" or 3/4" from bolt to clevis
hole.</FONT></SPAN></DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=494275614-29112004><FONT face=Arial color=#0000ff
size=2>Later,</FONT></SPAN></DIV>
<DIV> </DIV>
<P><FONT face="Times New Roman">Dean Pappas</FONT> <BR><FONT
face="Times New Roman">Sr. Design Engineer</FONT> <BR><FONT
face="Times New Roman">Kodeos Communications</FONT> <BR><FONT
face="Times New Roman">111 Corporate Blvd.</FONT> <BR><FONT
face="Times New Roman">South Plainfield, N.J. 07080</FONT> <BR><FONT
face="Times New Roman">(908) 222-7817 phone</FONT> <BR><FONT
face="Times New Roman">(908) 222-2392 fax</FONT> <BR><FONT
face="Times New Roman">d.pappas@kodeos.com</FONT> </P>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> discussion-request@nsrca.org
[mailto:discussion-request@nsrca.org]<B>On Behalf Of </B>Bob
Pastorello<BR><B>Sent:</B> Friday, November 26, 2004 8:58 AM<BR><B>To:</B>
NSRCA<BR><B>Subject:</B> Elev. Pull pull Question<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>May seem obvious, but I could use some help
here....setting up my Excelleron, centers are okay, cable tensions are pretty
close, centering is good. Up elevator is fine, on Down elevator, ONE
elevator moves farther, but they track together except at the endpoint, as
close as I can tell.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Anyone have suggestions on how I'd fine tune this
out...??</FONT></DIV>
<DIV><FONT face=Arial size=2>Hope everyone had a great
T-day!!</FONT></DIV><FONT face=Arial size=2>
<DIV><BR>Bob Pastorello<BR>NSRCA 199 AMA 46373<BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A><BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A></DIV>
<DIV> </DIV>
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