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Build an own stabilizer?

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juandesooka
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Re: Build an own stabilizer?

Postby juandesooka » Sun Sep 27, 2020 5:07 pm

wavy navy wrote:
Sun Sep 27, 2020 2:39 pm
juandesooka wrote:
Sat Sep 26, 2020 3:29 am
Yup, agree with the k I s s posts above.

Easiest is a pice of g10...sand it to shape, drill holes, done. But material is fairly expensive.
Fairly cheap for a small stab I think. Esspecially because I don't need no laminating if I understood it right.
Correct. Hard part was sourcing material...I had to order from usa. If you do go that route...tip 1...cutting it requires a carbide blade, it chews metal teeth. Tip 2...same for drill, go slow and you'll probably wreck a few. Tip 3...sanding, wear a respirator, really toxic, messy work.

plummet
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Re: Build an own stabilizer?

Postby plummet » Sun Sep 27, 2020 10:21 pm

wavy navy wrote:
Sun Sep 27, 2020 2:39 pm
juandesooka wrote:
Sat Sep 26, 2020 3:29 am
Yup, agree with the k I s s posts above.

Easiest is a pice of g10...sand it to shape, drill holes, done. But material is fairly expensive.
Fairly cheap for a small stab I think. Especially because I don't need no laminating if I understood it right.
Just remember that if you go completely flat you are giving away anhedral/dyhedral which reduces stability. Consider chucking a TT fin on the stab like I have done.

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tegirinenashi
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Re: Build an own stabilizer?

Postby tegirinenashi » Sun Sep 27, 2020 10:50 pm

plummet wrote:
Sun Sep 27, 2020 10:21 pm

Just remember that if you go completely flat you are giving away anhedral/dyhedral which reduces stability
Anhedral/dyhedral for hydrofoil is nonsense. For an airplane, angling the wing might elevate or lower the center of the lift force couple of meters or so, which is comparable to the fuselage height. For hydrofoil the center of the lift force is located 100 cm below the board, so that lowering or elevating it one cm makes no difference.

This analysis was for the main wing. For stabilizer it makes even less sense. Stabilizer role is dampening any pitch instability. Its impact on any other axis is zero. Therefore, for stabilizer only the two factors matter: it's area, and the distance from the center of the lift. To put it bluntly, those V shaped stabilizers are nothing more than an attempt to spice up perfectly working but boring design to make it look more sophisticated and expensive.
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wavy navy (Mon Sep 28, 2020 1:54 pm)
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wavy navy
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Re: Build an own stabilizer?

Postby wavy navy » Mon Sep 28, 2020 1:55 pm

As some guys ride mono the effect shouldn't be that big.
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nemoz (Mon Sep 28, 2020 2:30 pm)
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nemoz
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Re: Build an own stabilizer?

Postby nemoz » Mon Sep 28, 2020 2:30 pm

wavy navy wrote:
Mon Sep 28, 2020 1:55 pm
As some guys ride mono the effect shouldn't be that big.
that's really really true, personally after riding a mono I'm not considering coming back anymore, and i think brands will start making mono soon..

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tegirinenashi
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Re: Build an own stabilizer?

Postby tegirinenashi » Mon Sep 28, 2020 3:55 pm

If you are after a stab which is sized between normal and no stab, why don't you try gluing one or several plastic cards? Even if it doesn't work, you can always brag "I rode a credit card foil!"

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Re: Build an own stabilizer?

Postby wavy navy » Tue Sep 29, 2020 7:45 am

I'll try credit cards as a frontwing. :cool2:


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