X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 30 [X] Return-Path: Received: from web54106.mail.re2.yahoo.com ([206.190.37.241] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with SMTP id 1982313 for flyrotary@lancaironline.net; Thu, 12 Apr 2007 18:35:27 -0400 Received-SPF: none receiver=logan.com; client-ip=206.190.37.241; envelope-from=blueren@yahoo.com Received: (qmail 13109 invoked by uid 60001); 12 Apr 2007 22:34:41 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=5JIodTW2hjlGE5s8WUy8Yn3MIQMz81RXgV5qXcG73Kwiv0aDjUlgnzDvf84Y0ON1uBlW1Om/wVgUvdHrdouX1sK25k1nsioytCNoAG8jHQBCXGcc0hcDVTf/Tv36xaFz+DtTACVorUvuvSvdkDxfqzN0zyJJZgst+MKn6lXaLMo= ; Message-ID: <20070412223441.13107.qmail@web54106.mail.re2.yahoo.com> X-YMail-OSG: HFv8FIUVM1nRYypBGkLR1DQzRrCPvJuWxXoXYcpfDDcncPxdEjEqbYrKTt507ZXrHd0YgSHtVyOETX5nKeNzjg9h8.0pTEZdsLtzrZ8NxTz9jqo.pMc477fUNJ9tEWmMIu8iHnfBOj4- Received: from [4.88.64.78] by web54106.mail.re2.yahoo.com via HTTP; Thu, 12 Apr 2007 15:34:41 PDT X-Mailer: YahooMailRC/478 YahooMailWebService/0.7.41.10 Date: Thu, 12 Apr 2007 15:34:41 -0700 (PDT) From: Richard Nadig Subject: Re: [FlyRotary] Re: Mount offset To: Rotary motors in aircraft MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-720417424-1176417281=:12746" --0-720417424-1176417281=:12746 Content-Type: text/plain; charset=ascii It also moves the left main wheel forward of the right about 2 inches. The cause of any bad landing I ever make. :-) Rich ----- Original Message ---- From: Russell Duffy To: Rotary motors in aircraft Sent: Thursday, April 12, 2007 2:03:37 PM Subject: [FlyRotary] Re: Mount offset 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 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. Cheers, Rusty ____________________________________________________________________________________ Looking for earth-friendly autos? Browse Top Cars by "Green Rating" at Yahoo! Autos' Green Center. http://autos.yahoo.com/green_center/ --0-720417424-1176417281=:12746 Content-Type: text/html; charset=ascii
<Of course changing the shims on the mount also means moving the front of the cowl where the spinner lines up>
It also moves the left main wheel forward of the right about 2 inches.  The cause of any bad landing I ever make. :-)
Rich

----- Original Message ----
From: Russell Duffy <rusty@radrotary.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thursday, April 12, 2007 2:03:37 PM
Subject: [FlyRotary] Re: Mount offset

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

 
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.  
 
Cheers,
Rusty
 






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