From: marklisalally@mindspring.com
Message-ID: <000201be07a4$be4b7600$a3371e26@Pmlally>
To: "lanciar list" <lancair.list@olsusa.com>
Subject: lancair ES stall speed
Date: Tue, 3 Nov 1998 22:30:21 -0500
Mime-Version: 1.0

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This is my first submission to the builder forum, I have had a lot to say
but I have never wanted to go through the trouble of figuring out  how to
make a post, but I learned something last night that may jeopardize my
ultimate plans for my airplane. First a little history.
I am a very low time pilot (65 hours sense day one) and the reason I got my
ticket was so I could build and fly my own plane. I spent 6 months
researching a suitable aircraft.   My priorities were #1 slow stall speed
#2 utility  #3 reasonably fast cruise speed. The Lancair ES seemed to be
exactly what I wanted, Even beyond my lofty goals.

In doing research on the.. ES , I read many articles in many publication and
also conversed with the factory. All the information consistently claimed
the stall speed, flaps deployed at 57 mph or 50 knots.
Well, with this info I did the standard math (Vso x 1.3= standard short
final approach speed  or 65 knots)  which seemed reasonable for my planed
1700ft  turf runway.

So I started my big plans. I spent six months building a 1512 sq ft
hanger-workshop behind my house, I spent 4 months constructing a 1700x150ft
grass runway , and the last year building my plane. Right now I am about 2
to months from closing my wings.

This is where the problems begins.
I received my ES POH in the mail last night and began to read it. To my
SHOCK the Vso was stated at 61 knots , this translates to an 80 knot
approach speed. This seems to me to be excessive for a 1700ft runway. I
called  Carstin at lancair today to inquire on the facts. He said he
believed  the 50 knot figure to be correct, but went on to say that he did
not fill comfortable flying below 80 knots or maybe 75 on a calm day into a
short field. this leaves me to believe the 61 knot Vso figure to be correct.

Now I am in search of solutions to by problem. Will speed brakes make much
difference in approach angle or landing roll? Has anyone done R&D on vortec
generators on an ES?  I have no problem giving 5 or 10 knots up in cruise
speed to lower my landing speed by the same amount.

Any advise from fellow  lancair people out there would be very much
appreciated.

mark Lally
ES 10 %