Mailing List lml@lancaironline.net Message #68483
From: Colyn Case <colyncase@earthlink.net>
Subject: Re: [LML] Gap Seals
Date: Tue, 10 Dec 2013 08:42:41 -0500
To: Lancair Mailing List <lml@lancaironline.net>
Doesn't it work out that your average on a windy day is lower than the average on a calm day?
(there's always some x-wind effect on each of the 4 headings)

On Dec 9, 2013, at 5:10 PM, Douglas Brunner wrote:

I have been interested in how much extra speed I can get out of my Legacy using gap seals and other similar aerodynamic “tricks”.
 
Today I ran the plane in the “Before” condition.  Tomorrow, I intend to put on gap seals and change out my cowl rings to a more aerodynamic pair.
 
Here is today’s result:
 
Legacy Speed Test – N241DB
Heading
Ground Speed
Date 12/9/13
30
252
Alt
8,000
ft
OAT
63
Deg. F
300
232
RPM
2,600
MAP
23.3
inches
210
221
Fuel Flow
18.5
GPH
Peak EGT
1,275
Deg. F
120
242
EGT
1,175
Deg. F
236.75
kts
 
Any bets on the improvement with gap seals, etc?  I am guessing 4 knots.
 
D. Brunner
N241DB 700 hrs

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