Hey guys, does any body know the formula for how much power you loose or gain by changing line length and
kite size?
cheers!
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.
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 ;)
Select to expand quotewaveslave said..
Kite Size =( Line Length/Wind Speed) X (Rider Weight/10)
ahahaha
Select to expand quoteKozzie 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 ????
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.
Select to expand quotewaveslave 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??? 
Select to expand quoteGorgo 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. 
Crude theory I work to is for every extra 3m of line length I change it is like adding or subtracting 1m2 of kite.
Select to expand quotewaveslave said..
Kite Size =( Line Length/Wind Speed) X (Rider Weight/10)
^^Forgot to carry the bar width
Select to expand quotewaveslave 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
