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What influences going upwind

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PullStrings
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Re: What influences going upwind

Postby PullStrings » Tue Aug 03, 2021 10:00 pm

Agree
Snow white sand was no help

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Re: What influences going upwind

Postby Chicken-loop » Wed Aug 04, 2021 1:46 am

I've only been kiting for 16 years so.... in my experience lots of factors effect upwind.

Experience, conditions (chop/currents/wind strength), board, kite (design & size), where the kite is placed (high/low) and body weight are all contributing factors in getting up wind. I've also found different year models of the Rebel point up wind differently.
Last edited by Chicken-loop on Wed Aug 04, 2021 6:58 am, edited 2 times in total.
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bkkite
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Re: What influences going upwind

Postby bkkite » Wed Aug 04, 2021 2:54 am

Yeah, you’re probably not going to get a a consistent answer here because I’m not sure there is one. There’s too many variables at play, so people will answer depending on their own personal situation, but that doesn’t add up to a rule like board > kite…

My suspicion is that skill matters the most until you get to a certain level of skill. Then if the riders are really equally good, it’s probably a toss up between the kite and the board, probably depends on the conditions too.

In your case where the boards are similar, maybe try swapping kites to see?

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Re: What influences going upwind

Postby Aberdovy kiter » Wed Aug 04, 2021 2:35 pm

Definitely time to swop kites using the same board, i really thought it was a slam dunk for the kite..

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Re: What influences going upwind

Postby nothing2seehere » Wed Aug 04, 2021 2:56 pm

This could get interesting. Could do a worst upwind vs best upwind model of kite and board and see if we can guess at the difference in upwind angle. My initial guess is the board is going to take it for the biggest difference between worst and best.

Worst upwind kite - Single skin foil like peak
Best upwind kite - Race foil kite
- I'm guessing maybe a 20 degree improvement

Worst upwind board - cable wake board (loads of rocker - no flex)
Best upwind board - Hydrofoil board
- I'd guess at a 25 degree improvement

Can anyone suggest worse upwind boards and kites? Anyone have any actual figures for how close to the wind you can head with any of these?

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Re: What influences going upwind

Postby knotwindy » Wed Aug 04, 2021 3:36 pm

Of course going from a tt to a hydrofoil is going to make a huge difference. But that is not, I think, what the op was asking. Which will make a bigger difference, switching from one tt to another tt or switching kites is the question? If this is the question then probably kite changes it more.

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Re: What influences going upwind

Postby Matteo V » Wed Aug 04, 2021 5:14 pm

knotwindy wrote:
Wed Aug 04, 2021 3:36 pm
Of course going from a tt to a hydrofoil is going to make a huge difference. But that is not, I think, what the op was asking. Which will make a bigger difference, switching from one tt to another tt or switching kites is the question? If this is the question then probably kite changes it more.
Not if you consider the full range of board design.

It actually balances out. Perfect 12m wind for an 80kg rider, but the kite sucks at upwind > no upwind.

Same situation going to a too small and highly rockered TT > no upwind.

Same situation going to a too big LW TT > extreme upwind..... but no fun.

Same situation with a really good upwind kite that doesn't drift for wave riding > again, no fun.


I think we all fail to recognize the range available with usable gear in kiteboarding. So many other sports, especially windsurfing, had extreme constraints on the gear for a given condition. You could never windsurf, prone surf, SUP, or skimboard, just any old piece of plywood flotsam. But you can kite it.

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Re: What influences going upwind

Postby PullStrings » Wed Aug 04, 2021 8:27 pm

From what i have seen with people riding twin tips and surfboards is this :

Some of them were constantly going 5 degrees less upwind than all the others.

What did they all have in common you ask ?

Helmets :wink:
Last edited by PullStrings on Wed Aug 04, 2021 9:19 pm, edited 1 time in total.

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Re: What influences going upwind

Postby joriws » Wed Aug 04, 2021 8:41 pm

Very important upwind factor is relation of true wind speed and riding speed&direction. The faster you ride f.ex 90deg to true wind the more you rotate wind window and kite flies more back relative to true wind and less upwind you can go.

This is very evident in light winds but also affects all wind speeds.

Just think vector angles (u, v) where u is true wind vector and v is riding vector 90deg to u. Faster you go the longer v is and more rotated apparent wind vector is. Naturally v-vector can be at angle to u-vector and IRL is, but just divide v to components parallel to u and 90deg to u.

PullStrings
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Re: What influences going upwind

Postby PullStrings » Wed Aug 04, 2021 9:16 pm

Going upwind tip:

Better to go a bit slower in the right direction

Than a bit faster in the wrong direction


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