line length formula? any1 know it?

> 10 years ago
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Nomadhazza
Nomadhazza
24 posts
24 posts
9 Oct 2013 7:47pm
Hey guys, does any body know the formula for how much power you loose or gain by changing line length and
kite size?

cheers!
eibwen
eibwen
WA
116 posts
WA, 116 posts
9 Oct 2013 8:48pm
E = mc^2
sir ROWDY
sir ROWDY
WA
5378 posts
WA, 5378 posts
9 Oct 2013 8:59pm
I doubt there's a simple formula to do that as kite size isn't really linear... I'd say at a guess it would be a pretty tough set of equations if someone does do the math though, probably some set of trinomial functions at the very least, although I'm no Mathamagician.

Line length would also be a similar problem due to the different effects changing line length has on different size kites, factoring in different windspeeds, or weight of riders etc...

This would be some crazy math me thinks and at the very best you would get a perfect world type scenario answer.
Kozzie
Kozzie
QLD
1451 posts
QLD, 1451 posts
9 Oct 2013 11:13pm
there is some for 1 line kites. but thats more to do with breaking point and length and weight. kevlar lines are illegal in australia tho so i cant comment to much on my attempts. tho you can still buy them in china ;)
waveslave
waveslave
WA
4263 posts
WA, 4263 posts
9 Oct 2013 9:29pm
Kite Size =( Line Length/Wind Speed) X (Rider Weight/10)
sir ROWDY
sir ROWDY
WA
5378 posts
WA, 5378 posts
9 Oct 2013 9:30pm
waveslave said..

Kite Size =( Line Length/Wind Speed) X (Rider Weight/10)


ahahaha
waveslave
waveslave
WA
4263 posts
WA, 4263 posts
9 Oct 2013 9:33pm
Have you tested my formula ? ^^^

It works.
Chris6791
Chris6791
WA
3271 posts
WA, 3271 posts
10 Oct 2013 4:05am
I assume you are talking metres, metres per second and kg respectively?
Maxiy
Maxiy
ACT
96 posts
ACT, 96 posts
10 Oct 2013 8:32am
Kozzie said..

there is some for 1 line kites. but thats more to do with breaking point and length and weight. kevlar lines are illegal in australia tho so i cant comment to much on my attempts. tho you can still buy them in china ;)


just out of interest, why are kevlar lines illegal ????
Gorgo
Gorgo
VIC
5125 posts
VIC, 5125 posts
10 Oct 2013 10:58am
Kevlar lines are not illegal. I've got an old kite with a set of kevlar lines.

Kevlar is not used because it's not so good for kite lines. It is good because it doesn't stretch and because it doesn't melt. It's bad because when it breaks it breaks without warning, it's more susceptible to UV damage, it can be abrasive (it cuts through wet skin like a razor), and the high melting point means it will cut through non-kevlar lines.
Puetz
Puetz
NT
2186 posts
NT, 2186 posts
10 Oct 2013 11:17am
waveslave said..
Have you tested my formula ? ^^^It works.


... yeah not so sure,,,, your formula answers are the shorter the lines the smaller the kite ends up ,,, not sure thats quite right???
Puetz
Puetz
NT
2186 posts
NT, 2186 posts
10 Oct 2013 11:22am
Gorgo said..
Kevlar lines are not illegal. I've got an old kite with a set of kevlar lines.

Kevlar is not used because it's not so good for kite lines. It is good because it doesn't stretch and because it doesn't melt. It's bad because when it breaks it breaks without warning, it's more susceptible to UV damage, it can be abrasive (it cuts through wet skin like a razor), and the high melting point means it will cut through non-kevlar lines.


...yep! I had a set of the North kevlar lines and it made for great performances and but they only lasted for like a nano second, barely got 10 or so sessions out of them. Then one sweep of the kite, all 3 front lines snapped without any indication of wear or tear.

Got my money back though so no harm no foul.
archie00
archie00
NSW
138 posts
NSW, 138 posts
10 Oct 2013 4:12pm
Crude theory I work to is for every extra 3m of line length I change it is like adding or subtracting 1m2 of kite.
Jared888
Jared888
WA
389 posts
WA, 389 posts
10 Oct 2013 3:59pm
waveslave said..

Kite Size =( Line Length/Wind Speed) X (Rider Weight/10)


^^Forgot to carry the bar width
SugarQube
SugarQube
WA
490 posts
WA, 490 posts
10 Oct 2013 4:12pm
waveslave said..

Have you tested my formula ? ^^^

It works.



You would have to divide windspeed / line length

and as it should be a non linear function your formula only works with in a small sample of sizes, so unfortunatly wrong, sit down Wave Slave D- for that
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