Message-ID: <36DD78A6.87330705@flash.net>
Date: Wed, 03 Mar 1999 12:00:06 -0600
From: Ken Harwood <kenharw@flash.net>
To: Lancair List <lancair.list@olsusa.com>
Subject: RE: Gross Weight.
Mime-Version: 1.0

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>>

An increase in gross weight also requires either more power or more

runway, and don't forget density altitude.  Taking off at Albuquerque

with near 100 degrees while bumping the gross weight up will get your

blood pumping before you get airborne or before you reach the end of the

runway - whichever occurs first.  I am running the 200 hp Lycoming IO360

with 10:1 pistons, etc., and I will tell you those little tires are

really rotating by the time you get enough airspeed to fly.  I have

taken off there with a gross weight of, well let's say ABOVE 1800 lbs. 

I rotated at 95 mph and nothing happened, except that I stayed at 95 mph

(no more acceleration).  I lowered the nose back down and waited until

105 mph indicated before rotating again.  This time she reluctantly took

to the air.  With a temperature of 95 degrees I will let you figure out

how fast you are really traveling into a 5 kt. wind when liftoff occurs;

and it isn't in the first 3000 ft of the runway either.  


Keep that CG forward too!  No sense in getting airborne if the plane

doesn't want to fly front wards anyway.  I had much rather land the

plane with the CG on the forward limit as take off with it on the rear

limit.


Ken,  N15KH