Mike;
VERY successful first flight.
Congratulations!
Seems that your cooling is working very
well. 210F on the pan temp is not an issue; limit there is more like 250.
Now that you are in the air; that’s the place to tune the EC2. If
you have the EM2; run through the range of MAP in auto-tune mode (assuming you’ve
tested it first on the ground).
Best,
Al G
-----Original Message-----
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Mike Wills
Sent: Monday, January 19, 2009
8:07 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] first flight
- finally
All weekend winds were 45 - 90
crosswinds @ 10 - 15 so no chance to fly. Was working on my glider in the
hangar and happened to notice at 3:00 that the wind had calmed. Drag the
airplane out, quick preflight, quick brief of my crew and the tower folks and away
we go.
Verified at 40 knots that the ASI
was working this time and proceeded with the takeoff. Pitch trim good, healthy
dose of left rudder and we're off.
Once off the ground everything is
good. Just joined the pattern and continued to climb directly over the airport.
My home airport is surrounded, Mexico border 2 miles south, Class B 2
miles north, ocean to the west, and a 3500 peak to the east so up is the only
way to go.
Climbed to 5,000 and level off. Coolant
temps are good (my mechanical coolant temp gauge isnt working at all but the
engine monitor says 185). Oil temp by the monitor on the output of the cooler
is 190, mechanical gauge with sensor in the oil pan indicates 210 so I back off
the power and it comes down to about 190. OAT was in the mid - 70s (sorry to
rub it in for the guys that are freezing elsewhere in the country).
Orbitted the airport for about 20
minutes. Still dont trust the ASI. There's a 20 KT discrepancy between it and
the GPS in all directions. Pulled speed back to just nibble at the stall and
the ASI is reading 30 KTS.
Holding lots of left rudder in
straight and level also - I see a trim tab in my future. No surprise since I
didnt put any offset in the engine mount. Should make it easy to upgrade to a
2.85 ratio later.
Funny how you get so used to setting
power by sound. I dont know where to set power. Especially for the descent and
landing which is exacerbated by lack of a trustworthy ASI. So while loitering
above the airport I set 4500 RPM and see about 135 KTS on the GPS for ground
speed. Seems lower than I thought it would be but I need to do LOTS more flying
before making any judgements.
Controls seem lighter than my old
RV-6A. It's very nimble. For some reason the rudder seems more powerful than
the 6A even though they are exactly the same. Pulled off a decent landing.
Little bit of a skip but I'll blame the rough runway surface. Wandered a bit
left of the centerline due to the left rudder I was carrying.
Thought I had the EC2 pretty well
programmed but found once in flight that it needs more tweaking - no surprise.
Found a few throttle settings that were running a little lean/rich and had to
tweak the mixture some. On short final pulled the throttle back almost to the stop
and got the surging that I thought I'd finally cured on the ground - bump the
mixture a little and its gone. On roll out with the throttle at idle the engine
starts to run rough - richen it up a little and its good. At this point for the
next few flights I'll just leave the programming and focus on flying. The
programming is close enough for now.
Lots of things I should have noted
but didnt. Sensory overload. I have a little list of things to fix before I go
again. My ground crew reported that the airplane appeared to climb well ( I was
focused on speed/attitude and didnt think to look at the VSI - which probably
didnt work anyway). They also noted that they lost sight of the all metal
airplane, but never failed to find it by the sound. :-) On a positive
note, once away from the ground, the cockpit got much quieter. And they pointed
out that it was also considerably less noisy than the former George Graham
E-Racer that used to be based here.
More than enough for now. Sorry for
the length - figure I'll be on a high for a few days.