Today's Message Index:
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1. 05:55 AM - Re: Glasair-List drop me please (Davesbox1@aol.com)
2. 08:44 AM - Blended foil prop (Craymondw@aol.com)
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| Subject: | Re: Glasair-List drop me please |
can you drop me from the glasair list? thanks! dave
In a message dated 2/23/2010 2:11:33 A.M. Central Standard Time,
glasair-list@matronics.com writes:
*
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Message 2
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| Subject: | Blended foil prop |
We had a rare small window to fly our GL 2 SFT / 200 Hp Lyc. on a short 15
mile cross country trip to tank up on 100 LL that was about $1.00/ gallon
less than what our home base FBO sells it for. This was our second flight
using our new Hartzell Blended foil prop. We had a cross wind and again
didn't note any difference in T. O. or climb performance. At the beginning of
the take off roll the RPM on our UMA electric tach registered 2,600 RPM and
as the plane accelerated down the runway the rpm peaked at 2,750 and
bounced off 2,750 mark around 100 rpm on climb out. We hoped the 100 RPM
fluctuation was due to engine oil that wasn't fully warmed up to operating
temperature as pockets of cool 50 weight oil went through the governor. The air
temperature was in the low seventies and we had a stiff breeze and
experienced moderate turbulence. Because it was only a 15 mile flight, we elected
to cruise at 2,000 feet @ 2,400 rpm, 24 inches MP and 50 degrees lean of
peak @ 10.5 gals/ hour. On our old prop we commonly noted GPS ground speeds
180 to 185 mph at that altitude. But on this flight we noted an average GPS
ground speed of 205 mph and can't wait to see what we get at altitude. We
even had a GPS ground speed of 225 mph, but don't get excited because it was
due to a gusty tail wind. This was my wife's first time behind the
controls using our new blended foil prop and she remarked on how much faster the
plane was and how she had to keep resetting the trim as the plane gained
more and more speed after leveling out. She noted a 200 degree oil temperature
that was 15 degrees warmer than it previously was using the old prop. I
laughed when she said that "the plane is getting there before I am." She
found slowing the plane down to enter the pattern a new challenge that
required reducing the power, putting in up trim, pushing the prop in and sneaking
in a little flaps at 140 mph in an effort to slow the plane down. With the
old prop, we could feel the plane slow down by just reducing the power and
adding just 50 rpm. But this new blended foil just wants to keep on
trucking and requires more adjustments of power, prop, trim and flaps.
We plan to fly the plane on a cross country next week at 8,500 feet
were we formerly got our best performance and will report what we get.
Note: RYC freight is still driving us crazy with their padded
"residential" double price delivery charge. Glasair and Hartzell weren't aware
of this
when they shipped the prop and RYC never advised me of this policy.
Glasair's Harry Delong is trying to resolve this.
Charles Raymond N16CD
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