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Fins with cuts

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PNey
Medium Poster
Posts: 53
Joined: Mon Nov 26, 2001 1:00 am

Postby PNey » Mon Dec 16, 2002 10:40 pm

Does anybody know what are those cuts in these fins for?
http://sites.uol.com.br/p.ney/Fins/rfc.htm
Thanks.

PNey

Guest

Postby Guest » Mon Dec 16, 2002 10:50 pm

I´ve seen them too.
What´s the reason for those spaces?

Maria

Guest

Postby Guest » Mon Dec 16, 2002 11:10 pm

duh.

flex.

on thin fins it could make them track turn a bit better.

big ass windsurfer fins are designed to twist. so this is a vain marketing attempt to be different i'd warrant the fins are so thick you'd need an elephant to flex them.

Guest

Postby Guest » Mon Dec 16, 2002 11:29 pm

It's just marketing

Guest

Postby Guest » Tue Dec 17, 2002 3:31 am

rainbow is working in conjunction with a line maker and a impact vest maker... the slots are in the fin so that you can get your lines caught in them while inverted resulting in a death spiral which if you servive you will definately need a new set of lines and will probably want an impact vest once the broken ribs have healed and your game enough to get back on the water. ohh and on top of that you'll be wanting to buy another set of fins without slots.
So basically a great idea.. everyone wins!!

Nico
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Posts: 2645
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Local Beach: private kitebeach on my doorstep,
Le Morne.
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Gear: Drifter kites, wave boards
Brand Affiliation: Cabrinha, naish
Location: Mauritius, waterman since 1960
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Postby Nico » Tue Dec 17, 2002 3:45 am

Slots in fins originate from far gone windsurf days, the idea was to split the air that is dragged by a fin when spinning out, therefor reducing the spin out effect.
Nico

Guest

Postby Guest » Tue Dec 17, 2002 4:56 am

The slots are different from windsurf fins, the slots are perpendicular.

Maybe it is to increase the spin-out effect.


On 2002-12-17 03:45, Nico wrote:
Slots in fins originate from far gone windsurf days, the idea was to split the air that is dragged by a fin when spinning out, therefor reducing the spin out effect.
Nico

Nico
Very Frequent Poster
Posts: 2645
Joined: Sun Jan 06, 2002 1:00 am
Kiting since: 1998
Local Beach: private kitebeach on my doorstep,
Le Morne.
Style: wave
Gear: Drifter kites, wave boards
Brand Affiliation: Cabrinha, naish
Location: Mauritius, waterman since 1960
Contact:

Postby Nico » Tue Dec 17, 2002 8:44 am

Perpendicular ones were also used, specially near the base (dave kalama model).This principle was taken from the shark fin concept that is also cut away near the base on the trailing edge.
Nico


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