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Date: Wed, 20 Jun 2012 08:17:06 -0400
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From: N20087 <n20087@yahoo.com>
Subject: Precision airmotive servo

Folks

I believe my fuel servo is not delivering sufficient fuel to the engine in t=
he takeoff position. Why I say this is because the difference between the pe=
ak EGT and the takeoff EGT is 70 degrees F on the leanest cylinder and 120 o=
n the richest.  The book says this spread should be anywhere between 150 and=
 200 degrees F.  Why do I care you may ask.. Well my CHTs are too high at fu=
ll throttle takeoff.  I have to work to keep them below 430.  I have done ev=
erything possible to maximize cooling airflow with little improvement in the=
 CHT situation. =20

Anyhow, I would be interested in information from the group on the following=
=20

Like to compare fuel flows at full throttle at close to sea level (mine is b=
etween 15 and 16 gals/hr)
Any info concerning experience with enriching the takeoff flow on the bendix=
 style RSA-5AD1 servo (this setting is internal, I have found no reference m=
aterial on the procedure)

Thanks

Tom=