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From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [LML] Re: LNC4-Building for Good CG
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Date: Fri, 24 Sep 2004 18:28:01 -0400
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"Douglas W. Johnson, MD" <Lancair1@bellsouth.net> wrote:
  
"""
   I used tungsten and DU in my IVP rudder.  With a specific gravity of around
   20, as opposed to around 10 for lead, the smaller denser material could be
   shifted more anterior (away from the fulcrum point) in the counterweight
   cavity.
"""

Another approach with the rudder counterweight was implemented by Bob 
Wolstenholme on his award-winning "Mistress" LIVP, on which he eliminated the 
vertical extension at the top of the vertical stabilizer and added that 
section to the front of his rudder counterweight, thereby moving the c/w lever 
arm forward by an additional 2-3".  It looks nice and probably cut another 
15-20% of the weight required to balance the rudder.  FWIW.

      <marv>