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Very good numbers Buly. Would like to have heard what the TAS went
down to when you leaned the engine though. Usually the fuel burn goes down
a lot more than the speed. A drop in rpm is normal though. It takes
awhile to learn the sweet spot where MPG is the best.
Tracy
----- Original Message -----
Sent: Sunday, April 01, 2007 4:36
PM
Subject: [FlyRotary] Uneventful
flight
Since it is quiet on the list, I'll report on my Sunday
breakfast
flight from Ft Lauderdale Exec. to Okeechobee, which is on
the border
of my test area. I was getting tired waiting for the
strong winds
that have been blowing for 4 weeks straight, to die
down. So this
morning pushed the CZ out and took off with 38 Gal of
fuel and 400
lbs on the front seat. The wind was 30 degree to the
right at 15 mph
and gusting to 25. I was airborne at about 1200
ft and engine
running at 6-6500 rpm.
There were two items I
wanted to check on this flight. I had my new
wheel pants installed,
and as expected I gained 10K at cruise.
The other was loud staticky noise
in my headsets, that came on only
at high RPM and cruise. After
weeks and months of trying everything,
I zeroed on the secondary
injectors. They are the only thing that
kicks in at high rpm. Found
one crimp connector splice that was done
by my electronics engineer
neighbor, totally loose. The metal part
inside was blue from heat
(created from the sparking I guess?). So I
had it fixed. The noise
is gone and me and my flight captain are happy.
Leveled at 6000 ft
and set the plane for cruise. Here are the numbers:
5200 RPM ENGINE
2350
RPM PROP
24" MP
TAS 168-170K
1650 EGT
8 - 8.5 GPH FUEL
BURN
WP-4 PSI
WT - 165F
OIL 140F
OIL P. 70PSI
OAT 71F
I
was able to bring the mixture down to 7 - 7.5 gph but I can feel
the
power go down. I know it is not as impressive as a turbo engine,
but
gives me a piece of mind. It runs very clean and smooth and I
don't
think like before about boost, mixture, detonation, etc. etc.
On the
ground I did not have to even wipe the prop from sooth.
Both landings were
in cross winds and it worked out very well
considering my limited
piloting skills :)
Bottom line, I like my plane and the rotary. Now I'm
itching to
replace it with PP so I can use the third blade on my IVO
Magnum . It
is a sickness
I tell you :).
19 hrs and 21 to go
before I can fly outside the cage. Now it takes
me 35 minutes to get
to the border of my test area and the same back.
Buly
CZ
MK-IV
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