Mailing List lml@lancaironline.net Message #37240
From: <Sky2high@aol.com>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] Re: MT vs. Hartzell prop for the Legacy?
Date: Fri, 18 Aug 2006 16:43:11 -0400
To: <lml>
In a message dated 8/18/2006 1:24:20 P.M. Central Standard Time, PJHWFD@aol.com writes:
At 8000 ft my aircraft shows:
TAS 218kt MAP 23.3 RPM 2500 EGT1350 Fuel Flow19.8
....................................................................................
 New numbers with Performance's tuned exhaust at 8000 ft:
TAS 218kts MAP 23.5 RPM 2500 EGT 1310 fuel flow 18.1
All this great stuff and not a single knot faster! 
Peter,
 
So, OK numbers.   A 1.7 gph improvement  (8.6%) is the same performance on less power. What happens to the TAS when you increase the rpm to consume the same amount of fuel, 19.8 gph?  Have you considered the difference in dew points on the days the test were run? Were the gross weights and CGs the same?  So many questions, so little time......................................
 
Grayhawk
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