<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">The way I see it, the mechanical advantage is constant (assuming a wheel on the rudder) and is in fact no mechanical advantage as the radii must be equal to keep both cables tight at all rudder positions. With an arm on the servo, the holding force increases as it moves away from neutral. Picture the holding force if the arm moved 90 degrees. You'd break something before you could move the servo position if you pulled on the cable.<div><br></div><div>Jim O</div><div><br></div><div><br><div><html>On May 9, 2008, at 6:13 AM, chris moon wrote:</html><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div class="hmmessage" style="font-size: 10pt; font-family: Tahoma; ">Can someone explain the benefits (real or otherwise) of the pull-pull<span class="Apple-converted-space"> </span><br>wheel type rudder servo arm vs. a regular servo arm? Is there some real<span class="Apple-converted-space"> </span><br>benefit, or is it bling?<br>Thanks<br><br>Chris<br><br><br><hr>Stay in touch when you're away with Windows Live Messenger.<span class="Apple-converted-space"> </span><a href="http://www.windowslive.com/messenger/overview.html?ocid=TXT_TAGLM_WL_Refresh_messenger_052008" target="_new">IM anytime you're online.</a><span class="Apple-converted-space"> </span><span><HAN3512-250.jpg></span>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a></div></span></blockquote></div><br></div></body></html>