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Have you tried kiting with 120m lines? This guy did!

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lucas33
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Have you tried kiting with 120m lines? This guy did!

Postby lucas33 » Tue Jan 14, 2020 7:10 pm

Would it be the solution for light wind days?
:lol:



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Re: Have you tried kiting with 120m lines? This guy did!

Postby Toby » Tue Jan 14, 2020 7:17 pm

Some guys did before.
Nice and slow the kite will turn....

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Re: Have you tried kiting with 120m lines? This guy did!

Postby Matteo V » Tue Jan 14, 2020 7:28 pm

Toby wrote:
Tue Jan 14, 2020 7:17 pm
Some guys did before.
Nice and slow the kite will turn....
Kite turning speed is the same, though the slack in the lines does affect the kite responsiveness as lines get longer and longer. The biggest problem with longer lines is that the kite will sit in one particular part of the window for a much longer time. That means if it's in the power zone, it will not move out of the power zone for a very long time. If the kite is on the edge of the window the kite will not get into the power zone for a very long time. Both of these properties of long lines can be of benefit and detriment, sometimes at the same time.

With the current forward flying speed capabilities of existing kites, length of line is typically limited to anywhere from 12m to 30m. Shorter, and the kite flies too fast and makes the wind window useless. Longer, and the kite cannot move to another position in order to pull from another position or depower the kite by its placement in the window fast enough for basic tricks. Of course some basic tricks can be completed and are even easier when the kite stays in one part of the wind window from initiation to completion of that trick.

I stopped at 45 m lines.

And where in the heck would you set this kite up for an assisted launch?

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Re: Have you tried kiting with 120m lines? This guy did!

Postby tautologies » Tue Jan 14, 2020 8:05 pm

Ahh the boredom of waiting for wind will drive us all nuts at some point.
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Re: Have you tried kiting with 120m lines? This guy did!

Postby edt » Tue Jan 14, 2020 8:37 pm

yeah the kite turns the same speed the difference is how long it takes to change from a starboard to a port tack. For instance when you pull left the kite will just constantly circle waaaaay waaaay up in the sky like it's doing donuts. I mean it turns plenty fast still. But you want to go from right to left. So you pull on the left, the kite turns around just as fast as always. However, it's about 100 meters on the right. So you the kite is pointed the other direction but it's still pulling you right. You start carving and carving and carving and carving and carving. A minute later the kite makes it overhead and you can start to finish your turn and you eventually are going left. You need immense distances downwind of you because of how long it takes the kite to move across the sky. When you first start using 100's you might not understand this so you keep pulling and pulling on the left because you want to go left. You don't want to keep going right for a minute or two. You want to go left now. All the kite does is loop and loop and loop. You have to get used to the kite going the opposite direction in the sky from you and waiting for the lines to catch up. Anyway, I've never gone up to 120m, only 100m. Anything past 50m the line drag starts to get really noticeable. Landing 100m lines is a pain because you need so much distance, hard to get it exact, you have to move the kite down, nope still 20 more meters, move it up and come in a little but slooooowly because the lines are so long if you get any kind of momentum you'll have to tack back out and try again.

I think when you go from 24m lines to 40m lines you notice the lag more than the line length that's when it feels like the kite is slower (even tho it isn't). It's when you go from 40m to 100m that you understand the kite is turning just as fast it's just go so much sky to cover before it changes direction.

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Re: Have you tried kiting with 120m lines? This guy did!

Postby grigorib » Tue Jan 14, 2020 8:40 pm

did 59m. 15m Turbine felt pretty quick turning that far in the sky :)

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Re: Have you tried kiting with 120m lines? This guy did!

Postby geokite » Tue Jan 14, 2020 8:47 pm

On the dry lake bed in the summer (kite buggy) really long lines in the evening/night allow you to get the wind that is still blowing up high. No wind at ground level, but +10mph will still be up high. Surreal experience to have you lines sing in the absence of feeling any wind when stopped.

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Re: Have you tried kiting with 120m lines? This guy did!

Postby edt » Tue Jan 14, 2020 8:50 pm

Also does it work? There's no set answer. Maybe you have a marine layer or the wind is doming so there's some wind at 100 meters blowing 30 knots and at Sea level it's blowing 1 knot. Sure then it's great. But maybe it's blowing 7 knots at Sea level and 8 knots at 100 meters. Then no it does nothing the extra drag would make long lines worse than short ones.

Go make some 100m lines by tripling some line sets you understand better. It's something fun to do on a light wind day but in terms up practical use I put it up there with stacking kites.

50m lines are useful above that usually not so much

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Re: Have you tried kiting with 120m lines? This guy did!

Postby Milko0k » Tue Jan 14, 2020 9:14 pm

How about 200?

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Re: Have you tried kiting with 120m lines? This guy did!

Postby PugetSoundKiter » Tue Jan 14, 2020 10:57 pm

:o
Milko0k wrote:
Tue Jan 14, 2020 9:14 pm
How about 200?

Drag = 0.5 x Drag Coefficient x Area x Density x Velocity²

Drag Coefficent of a Sphere = 0.48
Kite Line Diameter = 0.0015 m
Line Area = (200m x 4) x 0.0015 = 1.2 m²
Air Density = 1.225 kg/m³
Velocity = X m/s

At 9.7Kts, 5m/s
Line Drag = 8.82N = Weight of 0.9kg or 2lbs

So at 13.6Kts, 7m/s
Line Drag = 17.29N = Weight of 1.76kg or 3.88lbs

So at 15.5Kts, 8m/s
Line Drag = 22.58N = Weight of 2.3kg or 5.1lbs

:duh:


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