Sender: <marv@lancaironline.net> (Marvin Kaye)
To: lml
Date: Fri, 26 Sep 2003 00:12:51 -0400
Message-ID: <redirect-2604391@logan.com>
From: "Larry Henney" <LHenney@attg.net>
Subject: RE: [LML] Re: Gain a couple of knots
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Eric,

> .......if I understand you; the elevator is trying to negate the
"anti-lift" by forcing the tail up and the nose down.

Yes.

>By adding weight to the tail (however you want to do it) or even
changing the stab angle (like the MD-80), the tail has all the downward
force it needs with neutral stab/elevator aerodynamics. 

Yes, this is obviously correct.  But.....  My stab is glued in place
unlike the MD-80.  Thus by adding more weight to the tail would then
require raising the tail with more down elevator.  Thus, increasing the
tails induced drag.  No?

My point is that in my plane it would seem to have a detrimental affect.
Or by contrast, I might do better by adding weight up front to zero out
the elevators.  

BTW, I did a 30 pound shift one day (very unscientific study).  I moved
my tool bag from the aft baggage compartment to the passenger footwell
in hopes of seeing the elevators closer to faired with the H.S.  This
was visibly irrelevant in regards to how the elevators looked compared
to the H.S.  Additionally, it was speed irrelevant as I found myself
still within a kt or two of Mark Ravinsky whose plane I had mirrored the
day prior.  Perhaps we're not talking kts but tenths of kts.  I'm not
knowing but it has me in (well, you know) nots.

Larry