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1. 05:54 AM - Re: RPM (Pete Krotje)
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If you are considering tilting the carb only do it if cruise
egt=99s are higher on one side than the other. Do not tilt the
carb based on a full throttle climb reading. Climb the aircraft to a
typical cruise altitude, throttle back to a cruise rpm, let temperatures
stabilize and then write down your EGT=99s. If the right side
cylinders are consistently higher than the left side then consider
tilting the carb.
Pete
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobbyPaulk@comcast.net
Sent: Thursday, August 28, 2014 7:30 PM
Subject: JabiruEngine-List: RPM
DonB,
I just flew today and observed the following:
My full throttle RPM at 100 MPH is 2830. ( From 60 to 1000' )
EGT's are 1200 to 1250 on #1 thru 4 and 6.
Number 5 is about 1300 ~ 1310. Outside air temp 92 degrees.
My Ram Air ducts at the rear tuck back toward the front at about a 45
degree angle following the curvature of the heads.
My conditional insp. is due in Sept and I am planning on tilting the
bottom of the carb a little more toward the #5 cylinder.
I still have not heard from anyone who has drilled out the aerator that
sits on top of the needle jet and the passage to it.
Bobby ( age 76 )
Zodiac 601 XL "B"
Jabiru 3300 S/N 1141
Sensenich 64" x 51" Prop
Bing Carb 260 Main & 290 Needle Jet
Status - Flying 224 hrs.
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