X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Fri, 18 Aug 2006 14:26:08 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m25.mx.aol.com ([64.12.137.6] verified) by logan.com (CommuniGate Pro SMTP 5.1c.3) with ESMTP id 1336956 for lml@lancaironline.net; Fri, 18 Aug 2006 08:47:58 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.6; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-m25.mx.aol.com (mail_out_v38_r7.6.) id q.c2a.2adf6c (58550) for ; Fri, 18 Aug 2006 08:46:53 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Fri, 18 Aug 2006 08:46:52 EDT Subject: Re: [LML] Rudder Pedal Force X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1155905212" X-Mailer: 9.0 Security Edition for Windows sub 5330 X-Spam-Flag: NO -------------------------------1155905212 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 8/18/2006 4:19:54 A.M. Central Standard Time, rosenzweig2@verizon.net writes: my name's Steve and I'm new to the group. I recently purchased and Lancair 360 MK II that's about 3 years old. I'm wondering if it's typical to see high rudder pedal forces required to move the rudder. I had it checked by my A&P (not too familiar with Lancair's). I have the adjustable pedal assembly on both pilot and copilot sides. We disconnected the cables at the rudder horn and the pedals and cables move quite freely. We lubed everything anyway. Also, with the cables disconnected, the rudder moves quite freely. The only thing I've noticed is that the rudder horn has a short lever arm and is perpendicular to the rudder hinge line. But the rudder cable pulls on it from a line straight out of the fuselage. This seems to create high pedal forces. Is this typical? Steve, Welcome to the Lancair community and the LML. The original Nylaflow tubing layout had some S-curves that can result in some binding of the cable under the forces required to move the rudder. Some have seen this as an advantage because the resistance contributes to the rudder remaining in trim once it is positioned in cruise. In general, the aircraft tail molding provided for the exit of the rudder cables and the plans provided for the position of the bell crank at the bottom of the rudder. Usually, the fitting tab at the end of the cable was bent a little to accommodate the angle difference between the bell crank and the cable exiting from the tail. From your description, the layout appears to be normal. Perhaps you could define "high pedal forces" in a better way (pounds of force or compared to what you were flying before). Have you noticed excessive wear of the Nylaflow tubing anywhere the cable leaves it? If so, that might be where the binding is occurring. Have you lubricated the cables in the tubing? Perhaps another Lancair owner in your area of CA could check it out for you. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) Everything in moderation. -------------------------------1155905212 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 8/18/2006 4:19:54 A.M. Central Standard Time,=20 rosenzweig2@verizon.net writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>my=20 name's Steve and I'm new to the group. I recently purchased and Lanc= air=20
360 MK II that's about 3 years old. I'm wondering if it's typica= l to=20 see
high rudder pedal forces required to move the rudder. I had=20= it=20 checked by
my A&P (not too familiar with Lancair's). I have=20= the=20 adjustable pedal
assembly on both pilot and copilot sides. We=20 disconnected the cables at the
rudder horn and the pedals and cables m= ove=20 quite freely. We lubed
everything anyway. Also, with the=20 cables disconnected, the rudder moves
quite freely. The only thi= ng=20 I've noticed is that the rudder horn has a
short lever arm and is=20 perpendicular to the rudder hinge line. But the
rudder cable pulls on=20= it=20 from a line straight out of the fuselage. This
seems to create h= igh=20 pedal forces. Is this typical?

Steve,

Welcome to the Lancair community and the LML.

The original Nylaflow tubing layout had some S-curves that can result i= n=20 some binding of the cable under the forces required to move the rudder. = ;=20 Some have seen this as an advantage because the resistance contributes to th= e=20 rudder remaining in trim once it is positioned in cruise. In gene= ral,=20 the aircraft tail molding provided for the exit of the rudder cables and=20 the plans provided for the position of the bell crank at the bottom of=20= the=20 rudder. Usually, the fitting tab at the end of the cable was bent= a=20 little to accommodate the angle difference between the bell crank and the ca= ble=20 exiting from the tail.

From your description, the layout appears to be normal. Perhaps y= ou=20 could define "high pedal forces" in a better way (pounds of force or=20 compared to what you were flying before). Have you noticed excessive w= ear=20 of the Nylaflow tubing anywhere the cable leaves it? If so, that might= be=20 where the binding is occurring. Have you lubricated the cables in the=20 tubing?

Perhaps another Lancair owner in your area of CA could check it out for= =20 you.

Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL=20 (KARR)

Everything in moderation.

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