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dave
Joined: 22 Sep 2006
Posts: 1382
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 Posted: Wed Dec 27, 2006 5:48 pm Post subject: More speeds: Older Kitfox cruise speeds |
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Lynn,
I find the shortest take off is
Full power - brakes if you have or can
tail up and zero flaps
When "my ASI " hits just about 30mph then ==> FULL FLAPS ( mine go over 30
degrees)
You will break ground in a hurry -
start bleeding off flaps to 20 degree and climb bleeding out flaps as you
climb and your vertical speed increases.
depending on weight you can be airbourne in well under 100 feet on wheels
and on float this can help break the suction on glassy water........
Dave
IV 582
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Lynn Matteson
Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan
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| Posted: Wed Dec 27, 2006 9:20 pm Post subject: More speeds: Older Kitfox cruise speeds |
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I haven't tried full flaps for TO, but have done 1/2 flaps, on at
full brakes, full power and let 'er go...this for the short-field TO.
My flaps are maxed at about 22-23 degrees....the SUGGESTED setting
for the IV, and I've got a cruise prop and 4-stroke power, so I'm a
"no-contender" for the TO trophy. : ) My hangar mate also goes to
full flaps while rolling his 1956 172 Cessna just before rotation...I
suppose this allows for faster acceleration than going to full flaps
during stand-still, then accelerating with the "full-flap drag"?
Lynn
On Dec 27, 2006, at 8:48 PM, dave wrote:
[quote]
Lynn,
I find the shortest take off is
Full power - brakes if you have or can
tail up and zero flaps
When "my ASI " hits just about 30mph then ==> FULL FLAPS ( mine go
over 30 degrees)
You will break ground in a hurry -
start bleeding off flaps to 20 degree and climb bleeding out flaps
as you climb and your vertical speed increases.
depending on weight you can be airbourne in well under 100 feet on
wheels
and on float this can help break the suction on glassy water........
Dave
IV 582
---
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Lynn
Kitfox IV-Jabiru 2200
N369LM |
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kitfoxmike
Joined: 05 Dec 2006
Posts: 373
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| Posted: Thu Dec 28, 2006 7:14 am Post subject: Re: More speeds: Older Kitfox cruise speeds |
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I have experimented with full flap take offs, and what I found was an amazing takeoff. I did mine where I was full flaps and was rolling a little, hit the throttle and away I went. It was amazing how the tail sprang up off the runway, and the lift wow. The only thing was I left the full flaps on at altitude and quickly found a huge drag and of course the turning was junk. I sense have found that you remove the flaps as soon as you can to gain airspeed and control. Another thing to watch out for is the tail comes way up and a prop strike is possible. I have a 68 inch powerfin 3 blade so I have extra room to play with, but if you have a 72 inch, I feel you could be in trouble. I limit myself to half flaps, but most all take offs are no flaps and I can still get off within about 200ft. plenty for me.
kitfox4 speedster 1200, 912ul
kitfoxmike
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