Mailing List flyrotary@lancaironline.net Message #36528
From: Richard Nadig <blueren@yahoo.com>
Subject: Re: [FlyRotary] Re: Mount offset
Date: Thu, 12 Apr 2007 15:34:41 -0700 (PDT)
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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<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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