Today's Message Index:
----------------------
1. 11:39 AM - Mt-Prop From the Owner (Eric Finley)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Mt-Prop From the Owner |
--> TeamGrumman-List message posted by: "Eric Finley" <finleyn254@hotmail.com>
From my experience flying light twins, and all other complex airplanes, its
always full throttle and full prop (exceeding the red line limits) until a
safe altitude is reached. As far as the 2500 RPM limit is concerned, there
is no doubt in my mind it should be complied with, especially in cruise
flight. However for takeoff I have been using max RPM, generating about
2650, MP was under red line (just as you do in any other airplane).
Yesterday I saw a climb rate of 1750 FPM all the way to a 1000 Feet MSL (90
knots, "2" 175 lb pilots and fuel to the tabs approx 40 gallons). Upon
reaching 1000 MSL, I then brought the power back and squared it out 25" MP
and 2500 RPM. TAS at 2500 was 138 knots, best I've seen so far with the new
prop, and further more reducing the power to 23" MP and 2300 RPM, TAS stayed
the same at 138 knots just as expected. If any beneficial gains are made due
to the installation of the prop, they are made on climb outs and quick well
planned descents. It's nice when you can descend at 750 FPM and cruise in
the upper yellow limit of the airspeed indicator and still only be pulling
2500 RPM, it makes for great ground speeds sometimes in excess of 175 knots
(not inlcuding the wind). This week will be the experimental week, basically
trying to figure out what works best in different configurations, so I'll
keep you guys posted.
Eric Finley CFI
AA-5B N254
Get reliable dial-up Internet access now with our limited-time introductory
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|