Today's Message Index:
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1. 05:23 AM - Re: egt's (Gary Casey)
2. 06:28 AM - The Annual Inpection - Powerplant; a new video (Aircraft Technical Book Company)
Message 1
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--> Engines-List message posted by: "Gary Casey" <glcasey@adelphia.net>
<<I am seeing 1450-1500 which puts in the yellow approaching red
>at takeoff. At cruise the egt's fall down to around 1350-1375.>>
While the exact temperatures may vary, as someone suggested, because of
probe position and other factors, I would expect that the EGT's would be
higher in cruise than takeoff. For adequate cooling at full throttle and
low altitude air-cooled aircraft engines are typically set up with very rich
mixtures, which will keep the EGT's at takeoff to 1350 or less. On my
IO-360 with the standard system the temperatures range from 1250 to 1300.
At lower power conditions you are "allowed" to lean to close to peak (on the
lean side, I hope) so the temperatures will typically be in the 1450 to 1500
range. Under very low manifold pressure conditions the exhaust temperatures
will, of course, be lower. What concerns me is that your temps are so high
at takeoff - there is no way that can happen unless the mixture is set at
even leaner than best power, which is in the 1350 to 1400 range. Who's
FADEC system is it? My comments are based on a "normal" compression ratio
of 8.5 to 10 and ignition timing in the 20 to 25 range.
Gary Casey
Message 2
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| Subject: | The Annual Inpection - Powerplant; a new video |
--> Engines-List message posted by: "Aircraft Technical Book Company" <winterland@rkymtnhi.com>
I don't normally spam on this list, but I've been working on this video for
about a year, its my first one, and I'm kinda proud of it. So here goes:
THE ANNUAL INSPECTION - POWERPLANT 55 minutes
Follow Westwood College of Aviation A&P instructors Tim Guerrera and
Vaughn Dowell through a step by step demonstration of an annual inspection
of the powerplant section of a Lycoming 0-360. This video explains every
step of the process from an initial AD search to the final log entries.
Each procedure is detailed including compression check, ignition timing,
spark plug service, exhaust pressure check, oil change, fuel system,
propeller, electrical system, etc..... , showing the proper techniques
along with plenty of professional hints and tips. A final segment details
safety wiring techniques as used throughout the powerplant section.
Most of this video was filmed at Westwood College in Denver using a
Piper Archer, however a few segments were done locally in Granby, CO
with my RV-6A and hangarmate Dave Cook's RV-6.
available now in DVD and VHS
from Builder's Bookstore
http://www.buildersbooks.com/annual_inspection_powerplant.htm
800 780-4115
...and to sweeten up the spam, mention "Matronics" when you order and get
25% off through the end of June.
Thanks,
Andy
RV-6A N-5060 flying
do not archive
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