X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 11 Apr 2011 07:56:57 -0400 Message-ID: X-Original-Return-Path: Received: from qmta10.emeryville.ca.mail.comcast.net ([76.96.30.17] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTP id 4942203 for lml@lancaironline.net; Sun, 10 Apr 2011 16:48:01 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.30.17; envelope-from=mjrav@comcast.net Received: from omta02.emeryville.ca.mail.comcast.net ([76.96.30.19]) by qmta10.emeryville.ca.mail.comcast.net with comcast id VwmW1g0020QkzPwAAwnTnu; Sun, 10 Apr 2011 20:47:27 +0000 Received: from mjr ([24.60.90.39]) by omta02.emeryville.ca.mail.comcast.net with comcast id VwnQ1g0180qwbqo8NwnRdj; Sun, 10 Apr 2011 20:47:26 +0000 X-Original-Message-ID: <002e01cbf7c0$76703e00$6501a8c0@mjr> From: "Mark Ravinski" X-Original-To: "Lancair Mailing List" References: Subject: Re: L-360 Engine Angle X-Original-Date: Sun, 10 Apr 2011 16:47:08 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002B_01CBF79E.EE179F10" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.2001 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.2001 This is a multi-part message in MIME format. ------=_NextPart_000_002B_01CBF79E.EE179F10 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Tom, A half inch of washers sounds like a very big correction..... On my 360, a rudder trim tab has always been required and it took me = quite a while to figure out why. The vertical tail is more flat on one = side and more convex on the other side. I don't know if the builder did it deliberately or just laid it up flat = on a bench. Anyway, it gives the tail "lift" sideways requiring rudder = trim to compensate. Mark Ravinski 1510 hrs airframe, 1140 of it mine. =20 I have a 360 with an angle valve motor. XP-400SRE 250 hours on this = engine now. I would like to eliminate the amount of rudder required to = keep the plane square. (ball in the cage) I have good reason to suspect = the engine has been installed with too much yaw. =20 I have the engine level to the airframe in pitch. The manual calls = for 1.5 degrees to the right in regards to yaw. (if I remember = correctly) I assume this was built in to the engine mount. =20 In order for me to get the engine level at 0, and straight in yaw, it = would take about a half inch of washers on lower right rubber engine = mount, and one quarter inch of washers on the upper right mount. =20 Is this normal? =20 Tom www.N54SG.com=20 =20 =20 -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG - www.avg.com=20 Version: 9.0.891 / Virus Database: 271.1.1/3559 - Release Date: = 04/08/11 02:34:00 ------=_NextPart_000_002B_01CBF79E.EE179F10 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Tom,
A half inch of washers sounds like a = very big=20 correction.....
On my 360, a rudder trim tab has always = been=20 required and it took me quite a while to figure out why.  The = vertical tail=20 is more flat on one side and more convex on the other side.
I don't know if the builder did it = deliberately or=20 just laid it up flat on a bench.  Anyway, it gives the tail "lift" = sideways=20 requiring rudder trim to compensate.
 
Mark Ravinski
1510 hrs airframe, 1140 of it = mine.
 

 

I have a 360 with an angle valve motor.=20 XP-400SRE  250 hours on this engine now.  I would like to = eliminate=20 the amount of rudder required to keep the plane square. (ball in = the=20 cage)  I have good reason to suspect the engine has been = installed with=20 too much yaw.

 

I have the engine level to the airframe in=20 pitch.  The manual calls for 1.5 degrees to the right in regards = to yaw.=20 (if I remember correctly)  I assume this was built in to the = engine=20 mount.

 

In order for me to get the engine level at = 0, and=20 straight in yaw, it would take about a half inch of washers on lower = right=20 rubber engine mount, and one quarter inch of washers on the upper = right=20 mount.

 

Is this = normal?

 

Tom

 

 


No virus found in this incoming message.
Checked by AVG = -=20 www.avg.com
Version: 9.0.891 / Virus Database: 271.1.1/3559 - = Release=20 Date: 04/08/11 02:34:00
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