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ookpik
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Stacking 2 kites

Postby ookpik » Thu Jul 28, 2005 6:18 pm

Has anyone tried stacking 2 kites so they function as a biplane. More power without sacrificing turning speed?

It would be kinda fun, and easy to do. You could add the second kite to the first with 4 identical lengths of line. I wonder if the kites would work best close together to create a slot/venturi effect... 4 feet apart? 6 feet apart? Maybe 10? Hmm...

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mx5alan
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Re: Stacking 2 kites

Postby mx5alan » Thu Jul 28, 2005 8:08 pm

ookpik wrote:Has anyone tried stacking 2 kites so they function as a biplane. More power without sacrificing turning speed?

It would be kinda fun, and easy to do. You could add the second kite to the first with 4 identical lengths of line. I wonder if the kites would work best close together to create a slot/venturi effect... 4 feet apart? 6 feet apart? Maybe 10? Hmm...
Yes, use 5m stacking lines. but when connected the rear lines need to apear about 15-20cm longer when connected to get the required AoA for the top kite.

Setting up takes a bit of time to fine tune, as both kites need to fly as one. If not set correctly, kites don't turn well or may stall.

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Denis
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Postby Denis » Thu Jul 28, 2005 8:34 pm

Tried some kite stacking in the past. Worked ok. The problem is that I did it in low winds (for obvious reasons), so the window was small. I had power, but the pull was too hard downwind to be able to keep upwind efficiently.


Here's a shot with 8m lines with a 17m and 19m 2003 Slingshot Fuels.
Image

Denis

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mx5alan
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Postby mx5alan » Thu Jul 28, 2005 10:35 pm

Denis wrote:Tried some kite stacking in the past. Worked ok. The problem is that I did it in low winds (for obvious reasons), so the window was small. I had power, but the pull was too hard downwind to be able to keep upwind efficiently.
May have worked better with shorter stacking lines ?
8m is getting a bit long....

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dt
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Postby dt » Thu Jul 28, 2005 10:38 pm

Denis wrote:Tried some kite stacking in the past. Worked ok. The problem is that I did it in low winds (for obvious reasons), so the window was small. I had power, but the pull was too hard downwind to be able to keep upwind efficiently.


Here's a shot with 8m lines with a 17m and 19m 2003 Slingshot Fuels.
Like Alan said, if the lines between the kites are all the same length, your top kite will be sheeted in too much and you will go downwind. But, since you had the drag of 46m of kite, you might always go down wind with those two kites.

I stacked an 11m ARC with an 8.4M ARC and I kited when the water was glassy.

dt

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dazza5172
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Postby dazza5172 » Fri Jul 29, 2005 2:46 am

Looks excellent

It would get pretty messy if you put them down in water

Dazza :roll:

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funalex
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Postby funalex » Fri Jul 29, 2005 7:34 am

yes, it's an not a stupid idea, a lot of person have though it..

Image

http://www.powerkiteshop.com/news/phantomstackpks.htm

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mx5alan
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Postby mx5alan » Fri Jul 29, 2005 9:52 am

Image

49m of Kite.... 8)

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funalex
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Postby funalex » Fri Jul 29, 2005 10:29 am

can you really go upwind eralier whith this style of big stacking ?

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mx5alan
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Postby mx5alan » Fri Jul 29, 2005 1:35 pm

funalex wrote:can you really go upwind eralier whith this style of big stacking ?
don't know about earlier...
but it shouldn't just be a downwind run.

Above photo is of 'Lach' aka Mr Float ~ in 5-6 knots on a FLX 152cm
see http://www.kitepower.com.au/news/index. ... 95,0,0,1,0


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