Torn kite- not pumped up enough?

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gordknot
gordknot
NSW
148 posts
NSW, 148 posts
15 Jun 2011 8:08pm
I've just torn my 9m- not sure if i pumped it up enough. Any one got any ideas?

The wind was pretty seriously gusty. The kite kicked up over my head and dropped out of the sky. I looked up and the leading edge had collapsed half-way down into the kite. I pulled the side line to pick it up and it twisted over and spun like a pin-wheel in the power zone before it slammed into the surf. I re-launched but the leading edge had rolled back over itself so many times that the kite was only half its normal width. And the side panel was ripped.

I'm thinking maybe not enough air in it?
GalahOnTheBay
GalahOnTheBay
NSW
4188 posts
NSW, 4188 posts
15 Jun 2011 10:46pm
Sorry to hear about your kite

Any kite that is depowered to the max and/or in gusty conditions can be made unstable by wind hitting it at a downward angle, and it will drop out of the sky. Leading edge pressure has nothing to do with this kind of crash, and there is little you can do about it apart from selecting a smaller kite so that it is not always at the top of the depower range.

That being said, you might not have closed the valves properly and/or developed a leak, and then the kite seems to fly normally until it gets in to some gusty air and/or you load/unload the lines and the kite then looks like it is trying to turn itself in to a taco.

Either way, once a kite spins up or luff-bangs through the power zone you always run serious risk of doing damage to the kite.

How was the leading edge pressure after you got back to the beach?
gordknot
gordknot
NSW
148 posts
NSW, 148 posts
16 Jun 2011 3:12am
Seemed ok at the time but i wasn't thinking about the air pressure so didn't really notice- it hadn't been leaking.

I'm thinking now that maybe there wasn't enough air which let the leading edge fold in on itself. Hadn't had much depower on. It had done the same thing a few minutes before without the leading edge collapsing - it was gusting pretty wild
radman4
radman4
678 posts
678 posts
16 Jun 2011 5:36am
Kites can react crazy in the air when way under inflated ,but usually they have to be way under inflated,if your unsure of how hard to inflate,grab a pressure gauge for your pump,they are only about $20.
SaveTheWhales
SaveTheWhales
WA
1913 posts
WA, 1913 posts
16 Jun 2011 8:09am
Hey Gordnot

Its not the Kite or pressure..... Its just the gusting wind

Say you get a 20 - 30 knot gust then theres a pocket of 5 knots in between
the kite cant fly - the leading edge drops a metre then another 20 smahes the kite down bending it ... and depending on your reaction and bar line tension and angle

the kite falls back, powers up to the tightest sideline, spins and goes arse up
Sound familiar

Winter wind sux dude - drink beer watch Porn
gordknot
gordknot
NSW
148 posts
NSW, 148 posts
16 Jun 2011 11:49am
sounds like you been there. that's pretty much what happened

still, it was worth it till it tore... the beer and porn will always be there
GalahOnTheBay
GalahOnTheBay
NSW
4188 posts
NSW, 4188 posts
16 Jun 2011 2:25pm
gordknot said...

the beer and porn will always be there


I like your thinking there
Plummet
Plummet
4862 posts
4862 posts
16 Jun 2011 1:52pm
yep sounds like a gust problem rather than a leading edge problem.

If your kite is sitting at the zenith or edge of the wind in gusty conditions your in danger of pushing the kite out of the wind window.

heres what happens. The wind window is approximatly 180degrees. But it shrinks and grows several degrees as the wind degreases/increases.

So a gust hits and your kite shoots forward to the to the edge of the new wind window. then after the gust a lull hits. All of a sudden your kite is now outside the lull wind window and it luffs and starts to fall out of the sky. Worst place for the kite in this instance is at the zenith. Can twist and fall back into the powerzone all stuffed up.

The fix?

when ever your kite is parked. get it as low as possible at the edge of the window. let the bar out when the gust hits. as soon as you feel the lull pull the bar in hard. this will stall the kite and let it drift back into the wind window.

After a bit of expereince you can do this automatically without even looking.

Gusty wind is difficult but can be very rewarding. my best session this year has been in 20-40 knots of gusty crazyness. difficult as hell but loved every minute off it.

PS having a stable low aspect storm kite for these days is a good idea. i use an ozone 8m light for these days. on cleaner days i'm rocking the c4 and edge but reach for the light it silly silly conditions.

radman4
radman4
678 posts
678 posts
16 Jun 2011 2:08pm
Yep Plummet sounds right to me your kite would have to be only 1/2 inflated to react that badly,on gusty days your best off with a small kite bigger board combo,and yea never hold your kite at the zenith,its way easier to feather the gusts at 45 degrees or lower,was out last night on the 10m 15-25 knots ,went west and was 8-30+ kite was drifting back and forth in the window 15-20 feet on the landing surging with the gusts,but thats the norm round here in winter westerlies its as gusty as it gets.
Pugwash
Pugwash
WA
7733 posts
WA, 7733 posts
16 Jun 2011 2:10pm
Arrhhhh... The happy ending of another kite
gordknot
gordknot
NSW
148 posts
NSW, 148 posts
17 Jun 2011 9:02am
Narrrhhh, Pugwash... she just be wearing a few more scars

You NZ guys seem to have a pretty good handle on these conditions. Thanks for the advice on the shifting wind window and keeping the kite low, it makes a lot of sense from what i've experienced. I really like those wild conditions, so will be staying out there

Might need to look into a low aspect kite. I'm using revs, but will take a look at the light
radman4
radman4
678 posts
678 posts
17 Jun 2011 9:54am
Also worth getting a demo on a Chimera 8 or 6.5, i have both and in gusty conditions they excell,last ride on my 6.5 was in 20 gusting 43 knots ,was a sweet 4hr session with explosive gusts well worth a test fly.
Plummet
Plummet
4862 posts
4862 posts
20 Jun 2011 7:18pm
i thought i had a good handle on these conditions and went for a kitesurf yesterday morning at 8.30 am. 20-25 knot onshore sqaully rainy. hell side current. trees and logs floating around in the sea, 3-4 meter swell....

little did i know a freak tornado had screamed past my flying site 4 hours earlier..... found that out later on.

if that tornado had come through 4 hours later.... i don't want think what would have happened.
djdojo
djdojo
VIC
1614 posts
VIC, 1614 posts
21 Jun 2011 10:44am
gordknot said...


Might need to look into a low aspect kite. I'm using revs, but will take a look at the light


Hi Gordknot, the Light evolved into the Catalyst, and is now approaching its third iteration. Everyone who flies them loves them for their stability, drift and forgiving nature.
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