Today's Message Index:
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1. 07:13 AM - Flight data and ignition failure (Larry McFarland)
2. 07:34 PM - Re: Flight data and ignition failure (gary)
Message 1
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| Subject: | Flight data and ignition failure |
--> Stratus-List message posted by: "Larry McFarland" <larrymc@qconline.com>
Hi guys,
This second flight allowed me to acquire useful data and also report that my B-ignition
failed
on checking it after 25-minutes being up. I wasn't using it, only switched to
it briefly.
I put the cowl on, did preflight and requested runway 27 and a safe-recovery area
to 3500-ft above the tower. 601EZ was up to temp on arrival of 27, so with
clearance, the throttle advanced to 4800-rpm and the plane lifted at 65-mph and
climbed out at 75. The prop was re-pitched to 15-degrees and climb was slower
so I advanced the throttle to 5000 and it went right up to pattern. Continuing
the climb at 4800-rpm, the EIS light for EGT came on at 1400-degrees, and I
cancelled the light. EIS for coolant came on at 200-degrees and it was cancelled.
EIS showed temps had peaked, EGT 1407, CHT 222, coolant 201, and oil at 197-degrees
F. After leveling off, trimming the elevator down a bit, at 2400-ft
the plane's nose leveled and sped to 95-mph indicated at 4500-rpm. I continued
to circle the area in a slight haze, but the plane handled beautifully while
I fiddled with turns and the trim system. The cabin was very comfortable with
fresh air from the vents and I felt very in-control. Temps came down a bit. Water
settled to 186, CHT was 220, oil was 198, EGT was 1370. I finally felt more
at ease, so switched to ignition-B to confirm it was working. The engine stuttered
as if to quit, so I switched back to ignition-A, recovered the rpm, and
requested a landing on 27. I made a short round approach on 27 from 1100-feet
at 2500-rpm. The nose was held to maintain 80-mph until decent rounded out,
slowed on the ground cushion and flared to a very smooth landing. All this "adventure"
in 30-minutes flight time left a real good feeling none-the-less. Logs
were entered and afterward, the ignition on the ramp would run on A or B, so
this one has to be looked at very carefully.
It seems the majority of coil or ignition problems like this are wiring connections,
so it begins there.
If there is any concern for the EGT temps described, I'd be interested because
1250 is ideal, 1300 was my target limit, but don't have a feel for anything above
that.
Thanks for your input again.
Larry McFarland 601HDS Stratus
Message 2
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| Subject: | Re: Flight data and ignition failure |
--> Stratus-List message posted by: "gary" <FlyinK@Efortress.com>
Congrats Larry! Sounds like you are there - all temps sound fine and the
airplane sounds solid. I'm sure the nerves will be stressed for several
more flights but it's all gravy now. Enjoy!
I hope I'm off to Osh tomorrow (weathered in right now) so I repitched my
warp to 16 degrees - only tried 12 and 14 before but this seems ok so far.
Only getting 4200 rpm static (4600 for 14 and 4800 for 12). Definitely
slower acceleration but still seemed to climb ok. Not sure if I picked up
much cruise but should be lower temps and better fuel? Actually, 12 degrees
seemed pretty sweet, cruising at 5000 rpm. Sounds high but it felt like a
real sweet spot for the engine. Probably too fine pitch though because it
could go over 5400 redline at WOT. Need more experimenting but I'll be
shopping for in-flight adjust at Osh, Quinti is supposed to be offering a
new U.S. blade at the show. Love those Bolly and Kiev blades. Got a
feeling PowerFin will be showing a new blade.
Gary
----- Original Message -----
From: "Larry McFarland" <larrymc@qconline.com>
Subject: Stratus-List: Flight data and ignition failure
> --> Stratus-List message posted by: "Larry McFarland"
<larrymc@qconline.com>
>
>
> Hi guys,
>
> This second flight allowed me to acquire useful data and also report that
my B-ignition failed
> on checking it after 25-minutes being up. I wasn't using it, only
switched to it briefly.
>
> I put the cowl on, did preflight and requested runway 27 and a
safe-recovery area to 3500-ft above the tower. 601EZ was up to temp on
arrival of 27, so with clearance, the throttle advanced to 4800-rpm and the
plane lifted at 65-mph and climbed out at 75. The prop was re-pitched to
15-degrees and climb was slower so I advanced the throttle to 5000 and it
went right up to pattern. Continuing the climb at 4800-rpm, the EIS light
for EGT came on at 1400-degrees, and I cancelled the light. EIS for coolant
came on at 200-degrees and it was cancelled. EIS showed temps had peaked,
EGT 1407, CHT 222, coolant 201, and oil at 197-degrees F. After leveling
off, trimming the elevator down a bit, at 2400-ft the plane's nose leveled
and sped to 95-mph indicated at 4500-rpm. I continued to circle the area in
a slight haze, but the plane handled beautifully while I fiddled with turns
and the trim system. The cabin was very comfortable with fresh air from the
vents and I felt very in-control!
> . Temps came down a bit. Water settled to 186, CHT was 220, oil was 198,
EGT was 1370. I finally felt more at ease, so switched to ignition-B to
confirm it was working. The engine stuttered as if to quit, so I switched
back to ignition-A, recovered the rpm, and requested a landing on 27. I made
a short round approach on 27 from 1100-feet at 2500-rpm. The nose was held
to maintain 80-mph until decent rounded out, slowed on the ground cushion
and flared to a very smooth landing. All this "adventure" in 30-minutes
flight time left a real good feeling none-the-less. Logs were entered and
afterward, the ignition on the ramp would run on A or B, so this one has to
be looked at very carefully.
>
> It seems the majority of coil or ignition problems like this are wiring
connections, so it begins there.
> If there is any concern for the EGT temps described, I'd be interested
because 1250 is ideal, 1300 was my target limit, but don't have a feel for
anything above that.
>
> Thanks for your input again.
>
> Larry McFarland 601HDS Stratus
>
>
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