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Adding weight to the fuselage for sinking foil

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downunder
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Re: Adding weight to the fuselage for sinking foil

Postby downunder » Sat Nov 13, 2021 9:59 am

abel wrote:
Sat Nov 13, 2021 8:19 am
SMJ wrote:
Fri Nov 12, 2021 9:34 pm
What brand of mast, fuselage, and wing are you using?
Moses: board T40 (red), mast 92, fuselage 710, wing 633.
Kite peak4, which sits quite inside the wind window making body drag upwind very difficult. Even parking the kite at 12 and backswimming sometimes doesn't help.
so, the Peak is a problem, correct?

I have no issue with 633. Infact, I want it even ligher.

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Re: Adding weight to the fuselage for sinking foil

Postby SMJ » Sat Nov 13, 2021 12:16 pm

abel wrote:
Sat Nov 13, 2021 8:19 am
SMJ wrote:
Fri Nov 12, 2021 9:34 pm
What brand of mast, fuselage, and wing are you using?
Moses: board T40 (red), mast 92, fuselage 710, wing 633.
Kite peak4, which sits quite inside the wind window making body drag upwind very difficult. Even parking the kite at 12 and backswimming sometimes doesn't help.
abel,
Nice setup. With that rig, you have at least a couple options:
1. Use a boat propeller shaft anode, and clamp it around your fuselage via some protective cloth or electrical tape.
2. Use an aluminum mast with a Moses conversion bracket. The aluminum Slingshot mast with the Slingshot to Moses wing adapter is an option.

Here are some links:
https://foilmount.com/products/moses-to ... pter-plate

https://www.amazon.com/Martyr-CMX05M-S ... 5430&th=1
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Re: Adding weight to the fuselage for sinking foil

Postby airsail » Sat Nov 13, 2021 10:17 pm

downunder wrote:
Sat Nov 13, 2021 9:59 am
abel wrote:
Sat Nov 13, 2021 8:19 am
SMJ wrote:
Fri Nov 12, 2021 9:34 pm
What brand of mast, fuselage, and wing are you using?
Moses: board T40 (red), mast 92, fuselage 710, wing 633.
Kite peak4, which sits quite inside the wind window making body drag upwind very difficult. Even parking the kite at 12 and backswimming sometimes doesn't help.
so, the Peak is a problem, correct?

I have no issue with 633. Infact, I want it even ligher.
Not just Peaks, any kite in ultra light wind so it does tend to be Peaks or larger foil kites. After a few failed attempts to get to a floating foil, a mate brought it back to me, I was using a 15mtr Sonic. I now never use a floating foil and big kite combination. No problem body dragging to a floating foil in stronger wind.

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Re: Adding weight to the fuselage for sinking foil

Postby Peter_Frank » Sat Nov 13, 2021 11:29 pm

You are right, in marginal winds all kites have difficulties so you can not bodydrag well upwind.

I am lucky, my big area Ketos carbon foils sinks veeeeery slowly, meaning in winds where you use a 15 m2 (6-9 knots right?)

In this wind, they always drop down again.

In more than 10 knots though, the wind can keep it on its side, so you have to drag or swim to it.

No problem in so much wind, not with Peak kites or other kites - but yes, it takes some time.

Problem is thus solved if you have a foil that slowly sinks, as you can get your board in really light wind now because it sinks, and in more wind it will often stay on its side, but no problem to reach now.

8) Peter

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Re: Adding weight to the fuselage for sinking foil

Postby knyfe » Sun Nov 14, 2021 5:46 pm

My 633 is not sinking 100% of time but sometimes. But in combination with my self made board it’s never a problem running upwind. Try mounting it further back. I have seen trouble with other board combinations and was worried when I started but it works well for me. My mounts are all the way at then end of the board - I mean all the way… it does not need to sink to stay out of trouble.
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Re: Adding weight to the fuselage for sinking foil

Postby abel » Sun Nov 14, 2021 9:39 pm

knyfe wrote:
Sun Nov 14, 2021 5:46 pm
My 633 is not sinking 100% of time but sometimes. But in combination with my self made board it’s never a problem running upwind. Try mounting it further back. I have seen trouble with other board combinations and was worried when I started but it works well for me. My mounts are all the way at then end of the board - I mean all the way… it does not need to sink to stay out of trouble.
Can u please sende pics of ur self made board with the foil attached?

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Re: Adding weight to the fuselage for sinking foil

Postby Trent hink » Sun Nov 14, 2021 10:06 pm

It's the board sitting on its side and catching the wind that is the problem.

On a sailboat, it has to be very well designed in order to lash the rudder and use sail trim to make it automatically sail at some relation to the wind direction, and this usually only works up-wind, or across the wind.

On a kite foil board, I think it is mostly just a fluke that it could move upwind faster that you can bodydrag to catch up to it.

Of course you could wrap the fuselage with a bit of lead sheet, or invent some type of drouge tethered to the strut that you tuck loosely into your pocket, ready to go into action when you fall, or God forbid, use a leash....

But an elegant solution should rely on the shape of the board itself to solve the problem.

This might actually be as simple as moving the strut mounting position slightly.

Otherwise it might mean using a board that is narrower or has less volume.

If the problem seems really extreme, it might mean altering the board shape so that it always "rounds up" too far for it to catch the wind.

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Re: Adding weight to the fuselage for sinking foil

Postby knyfe » Mon Nov 15, 2021 2:46 am

Now it gets ugly … here my board. It’s a cut down door with a nose bend and soft cover for volume. Overall 1 m in length.
01AEF880-FD19-4F58-B74B-2EE41B790662.jpeg
89F29172-1C69-4D4C-8187-072CF18E20E0.jpeg
The float in the water has some angle to it due to the mounting position. I think that’s what works for me.
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Re: Adding weight to the fuselage for sinking foil

Postby Trent hink » Mon Nov 15, 2021 4:21 am

I think it looks good,knife, but is that xps foam?

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Re: Adding weight to the fuselage for sinking foil

Postby abel » Mon Nov 15, 2021 9:12 am

knyfe wrote:
Mon Nov 15, 2021 2:46 am
Now it gets ugly … here my board. It’s a cut down door with a nose bend and soft cover for volume. Overall 1 m in length.

01AEF880-FD19-4F58-B74B-2EE41B790662.jpeg

89F29172-1C69-4D4C-8187-072CF18E20E0.jpeg

The float in the water has some angle to it due to the mounting position. I think that’s what works for me.
Wow! :thumb:
Nice pice of work. Can't be ugly if your DIY effort solves the issue.


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