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My start procedure is about the same. I set it at 12:00
for takeoff also. I havent figured out why, but during climbout to 8,000 I found
that I need to tweak it a little richer a couple of times on the way up. I would
think the MAP sensor is altitude compensating but at least for my installation
it doesn’t seem to be.
For cruise do you lean enough that you notice any
reduction in engine RPM? What sort of fuel flows, manifold pressure, and cruise
speeds are you getting and at what altitude?
I cant fly up to Cable - need to knock out another 20
hours before I can leave the test area. If I can talk one of my buddies into
going up I'll see you there.
Mike
Sent: Tuesday, January 05, 2010 11:29 PM
Subject: [FlyRotary] Re: first flight of the new
year
My experience is the same as Al's. I put it at 3:00 for
starting then 12:00 after that for slightly rich of peak (which is at
10:30 or 11:00). I could leave it at 12:00 the whole flight if I wanted
but In cruise I lean it to keep EGT less than 900C. That is usually
somewhere around 8-9:00 on the dial and does require slight tweaking based on
power setting and altitude/RPM.
BTW Mike. I am flying formation at
the Cable Air Fare this weekend and Al is coming along on Saturday. You
should try to find a way to come out too.
--
David
Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
On Tue, Jan 5, 2010 at 10:16 PM, Al Gietzen <ALVentures@cox.net> wrote:
Given that most of us are used
to adjusting mixture by cranking repeatedly on the big red knob, it does take
a little mental adjustment to get used to the small adjustments needed with
the EC-2. But I'm pretty well dialed into it
now.
Mike
Mike;
One of the nice
things about the rotary with the EC-2 is; once well tuned; you don’t have
to make any adjustments. My lean cruise position is at 10:30 –
11:00; max power 2:30 – 3:00; but I can taxi away from the hangar with it at
2:00 position; do a flight to 10,000 ft and return to the hangar without ever
touching the knob and it never missing a beat. Not optimum, and EGTs higher
than desired; but the point is – needs minimal pilot
attention.
Al
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