Message-ID: <37C0ABFF.1FF4926B@akos.net>
Date: Sun, 22 Aug 1999 22:03:44 -0400
From: Tom Giddings <v35b@akos.net>
To: Lancair Mail List <lancair.list@olsusa.com>
Subject: extended wing tips
Mime-Version: 1.0

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         Today I got in a tinkering mood and thought I would dust off
the standard wing tips and give them a whirl.I have been flying with the
extended tips.My comparisons are as follows.
1.On takeoff the short tips needed about 8 kts more speed to be solidly
flying.
2.The climb rate was reduced by 300 ft per min.(approx 1700 lbs)
3.My cruise speed was 2 kts more IAS
4.approach to landing speed felt like it needed about 5 kts more.
5.It does not float as much in ground effect(I thought this a plus)
6 I used up more runway landing and takeoff.(due to the higher speeds
required)
7. I did like the increased roll rate
8.Long wing tips are much more stable although the  the ailerons are
much heavier in cruise
9 My stall speed at (dirty)54kts with long tips short tips 62kts
Does anyone know how much more wing loading these tips create and how
much it reduces the G 's it was desighed to take.I have heard one half
G.And never go to red line in turbulance .In addition it is not
recomened to do aerobatics.The only other thing that comes to mind is
the additional float I get from long tips if I get a little to hot
landing.I am certainly no test pilot,but I thought this might  be
interesting to the group.


Tom Giddings 360TG


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