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<DIV><FONT face=Arial>The nylon servo arms are quite adequate when used with a
clevis that applies the force in line with the plane of the arm (typical pin
clevis). Pushrod ends that bolt to one side of the arm move the force off the
plane of the arm and thereby impart a twisting force to the arm. (DuBro type
ball links are the extreme.) Add a bunch of vibration to the normal loads and
the nylon arm may eventually fail - a wheel is a much better choice if one uses
the nylon accessories. In addition to better withstanding the twisting forces of
offset linkage, the aluminum arm is more substantial for screw mounting the ball
/ ball bearing end.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Jim is correct regarding the H9 arms on JR servos - there
seems to be more variation in the spline of the output than the spline of the
arm. (An arm tight on one servo may fit nicely on another.) OTOH, I've found the
H9 arms to fit Futaba servos consistently well.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Earl</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=vicenterc@comcast.net
href="mailto:vicenterc@comcast.net">vicenterc@comcast.net</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> ; <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> Friday, August 31, 2007 7:28
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Metal
Servo Arms</DIV>
<DIV><BR></DIV>
<DIV>For pattern I always use the nylon servo arms that comes with the JR
servos. I am not sure why you need the metal servo arms. Usually I
use the round one for aileron and elevator. For rudder I use the heavy
duty arm that JR offers (comes in the 8611 servo). I never have problems
with the nylon servo arms in pattern application.</DIV>
<DIV> </DIV>
<DIV>Regards,</DIV>
<DIV class=signature id=signature>--<BR>Vicente "Vince" Bortone</DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">--------------
Original message -------------- <BR>From: Bob Richards <<A
href="mailto:bob@toprudder.com">bob@toprudder.com</A>> <BR>
<DIV>I've used the H9 arms and the SWB arms. No comparison, I will continue
to use the SWB arms.</DIV>
<DIV> </DIV>
<DIV>Bob R.</DIV>
<DIV><BR><BR><B><I>Kelly Regan <kelly.regan2@verizon.net></I></B>
wrote:</DIV>
<BLOCKQUOTE class=replbq
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Not
an answer to your question but I find the SWB arms much nicer<BR>since
they are split. They use a a 2/56 clamp screw and nylon locking<BR>nut to
draw the clamp tight around the spline of the servo shaft.<BR><BR>twtaylor
wrote:<BR>><BR>> I bought some Hanger 9 alum servo arms and when I
put them on they are <BR>> VERY hard to get to pull down on to the
servo. Is<BR>><BR>-- <BR><BR>________________________________<BR>Kelly
Regan<BR>Home Page:
www.reganspace.com<BR>________________________________<BR><BR>_______________________________________________<BR>NSRCA-discussion
mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR></BLOCKQUOTE><BR></BLOCKQUOTE>
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