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How much runway to launch P80 powered Roo

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How much runway to launch P80 powered Roo

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Old 07-29-2006, 10:24 PM
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Default How much runway to launch P80 powered Roo

grass and or pavement,3500 ft above sea level.
thx in advance
Old 07-29-2006, 10:29 PM
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gmeister
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Default RE: How much runway to launch P80 powered Roo

If this is any reference, I flew a P70 powered Roo from pavment near sea level and used about 500 feet. I don't know how 3500 feet will affect a turbine but you should be ok.

Gary
Old 07-29-2006, 10:45 PM
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Default RE: How much runway to launch P80 powered Roo

thx Gmeister,anyone else plz feel free to contribute
Old 07-29-2006, 11:11 PM
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Default RE: How much runway to launch P80 powered Roo

we have 2 kangaroos with p-80's...... altitude of about 750 ft. larry's kangaroo will get off in about200 feet on asphalt


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Old 07-29-2006, 11:22 PM
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Default RE: How much runway to launch P80 powered Roo

We have about 300 ft of pavement!
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Old 07-29-2006, 11:38 PM
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Default RE: How much runway to launch P80 powered Roo

Curitiba at 3000 feet ASL with a P-80, a tipical takeoff run is less than 250 feet in a paved runway.

Enrique
Old 07-29-2006, 11:56 PM
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Default RE: How much runway to launch P80 powered Roo

thx for the input erbroens
Old 07-30-2006, 08:51 AM
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Default RE: How much runway to launch P80 powered Roo

It's the landing that will be hard. Hope the grass is smooth. Bob
Old 07-30-2006, 09:17 AM
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Default RE: How much runway to launch P80 powered Roo

I used to fly my P-80 powered Roo off a 350' grass strip (200' above sea level) all the time. As long as I spooled up before releasing the brakes, takeoff wasn't a problem. Landing, on the other hand was interesting. The rule of thumb we used to use was 'if you cross the threshold at idle, you're committed to land.' In other words, the runway was too short to do a go-around if you screwed up and you take what you get after you cross the threshold...

Bob
Old 07-30-2006, 09:56 AM
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Default RE: How much runway to launch P80 powered Roo

Anytime, and don´t be afraid to push the elevator stick with authority after some ground speed is
obtained.. the high thrustline in the Kangaroo makes it impossible to over rotate and stall.. (but be
ready to hold a lot of "up" elevator until cruise speed is reached).

Enrique
Old 07-31-2006, 01:51 AM
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Default RE: How much runway to launch P80 powered Roo

Enrique is right, it is very hard to stall a Roo at full power on the TO run, I have done it to clear the weeds off to the sides of our runway because a not so centered TO.

I held the elevator full up and she left the ground very slow but with authority then relaxed it to pick up speed.

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