X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Received: from imf21aec.mail.bellsouth.net ([205.152.59.69] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 1981878 for flyrotary@lancaironline.net; Thu, 12 Apr 2007 14:04:24 -0400 Received-SPF: none receiver=logan.com; client-ip=205.152.59.69; envelope-from=rusty@radrotary.com Received: from ibm63aec.bellsouth.net ([65.6.194.9]) by imf21aec.mail.bellsouth.net with ESMTP id <20070412180336.MXNL26289.imf21aec.mail.bellsouth.net@ibm63aec.bellsouth.net> for ; Thu, 12 Apr 2007 14:03:36 -0400 Received: from rd ([65.6.194.9]) by ibm63aec.bellsouth.net with ESMTP id <20070412180336.BZML2353.ibm63aec.bellsouth.net@rd> for ; Thu, 12 Apr 2007 14:03:36 -0400 From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Mount offset Date: Thu, 12 Apr 2007 13:03:37 -0500 Message-ID: <000001c77d2c$e5128e20$6e01a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C77D02.FC3C8620" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6822 Importance: Normal Thread-Index: Acd9ITf7MFAqmxtYRsyJs3Bu4wQF9wACGerg In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C77D02.FC3C8620 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Personally, if I were to do the motor mount again, I think I would shoot for 0 deg = offset. Just my 0.02 worth Ed =20 I agree with Ed, especially if there's ANY chance you'll change the prop rotation later. The RV-3 was nearly uncontrollable on takeoff with the wrong offset following the change from B to C redrive. I ended up = shimming the mount to get it back to zero offset, and it wasn't bad at all after that. Of course changing the shims on the mount also means moving the = front of the cowl where the spinner lines up, which is by far the worst part = of changing this. =20 =20 Cheers, Rusty =20 ------=_NextPart_000_0001_01C77D02.FC3C8620 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Personally, if
I were to do the motor mount again, = I think I=20 would shoot for 0 deg offset.
Just my 0.02 worth

Ed

 
I agree = with Ed,=20 especially if there's ANY chance you'll change the prop rotation = later. =20 The RV-3 was nearly uncontrollable on takeoff with the wrong offset = following=20 the change from B to C redrive.  I ended up shimming the mount to = get it=20 back to zero offset, and it wasn't bad at all after that.  Of = course=20 changing the shims on the mount also means moving = the front of=20 the cowl where the spinner lines up, which is by far the worst part=20 of changing this.  
 
Cheers,
Rusty
  =




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