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n345js(at)verizon.net
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 Posted: Sat Jan 29, 2011 3:55 pm Post subject: Prince P-Tip prop |
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I also have the Prince P-Tip prop 62 x 78. I consider it a cruise prop and only get 4600 RPM on initial takeoff roll. But it is fast and smooth...
John Schussler
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bernard.wilder2(at)gmail.
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| Posted: Tue Feb 01, 2011 7:05 am Post subject: Prince P-Tip prop |
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I have 72" X 81" P-Tip. Got it eight years ago. Much too big and too much bite. Even with the nose wheel pant removed, on a rough field I have to be carefull or the prop will hit the tire. Prince has offered to re-cut it for me but I don't want to be without the plane for that long.
If my airport was higher than 140' or if I flew out of grass strips, I might reduce the pitch. However, I get good performance from it. I typically do not use full power on take-off. The torque makes my plane squirelly. When I'm off I open the throttle until I'm 300' or so up. I lower the nose and pick up speed to 100 or 110 and maintain rpm at 4800. When alone in the winter I am then climbing out at 1,200'. Summer when it is hottet I get 1,000 fpm.
I have decreed that max continous cruise power for my plane is 4,850 rpm at which point I am light sport legal - 135 mph. For short periods of time, wink -wink, the engine will turn up to 5,500 rpm at which time I am getting 150, true.
The reason for the 4,850 rpm limitation is that when I built my plane I reduced the size of the intake cowls by 60% and fared the opening into the fuselage. It makes the plane slippery-er ( If there is such a word. ) but has the potential of leading to over-heating. (( Which I have never experienced.)) Most of my flying is local and I am in no hurry so I dink around at 4,700 rpm at 130 while burning a little less than 4 gal/hour.
Love the P tip.
Bernie Wilder
On Sat, Jan 29, 2011 at 6:52 PM, John Schussler <n345js(at)verizon.net (n345js(at)verizon.net)> wrote:
[quote] I also have the Prince P-Tip prop 62 x 78. I consider it a cruise prop and only get 4600 RPM on initial takeoff roll. But it is fast and smooth...
John Schussler
[quote] ---
| | - The Matronics Pulsar-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Pulsar-List |
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