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do fins really need to be so sharp?

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Toby
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do fins really need to be so sharp?

Postby Toby » Sat Oct 02, 2010 11:07 pm

ouch, hurt my finger on a fin, which is dangerously sharp. If you would crash on it, it will just slice into your muscles like nothing else. The sharpest fins I ever had on a board...
Riding on a buggy back from the lagoon, I meet another guy, who had a deeper cut in his hand from a fin.

Do they really need to be so sharp? I will sand it off, since I think they are way too dangerous!

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Re: do fins really need to be so sharp?

Postby Ludmil » Sat Oct 02, 2010 11:17 pm

North?

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Peter_Frank
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Re: do fins really need to be so sharp?

Postby Peter_Frank » Sat Oct 02, 2010 11:30 pm

The sharper trailing edge, the less drag :thumb:

Does it matter ?

Only those "few" doing board offs would have a problem with that, right ?

Otherwise you never land on your board upside down :naughty:

So seem natural to go for the best "performance" here :D

Those who want "blunt" fins, can just sand them down - it wont hurt speed (drag) that much really, only a small amount, so IMO they actually DONT need to be so sharp :D

Its just, that for most surfers, it does not matter really, so the sharper the better 8)

- Peter

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Re: do fins really need to be so sharp?

Postby Kamikuza » Sat Oct 02, 2010 11:32 pm

Got a scar on my ankle from a fin cut too ...

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Re: do fins really need to be so sharp?

Postby iblocalsurfer » Sun Oct 03, 2010 2:27 am

Most of the FCS or Future fins are not that sharp, however, I almost took off a finger with a glass-in fin back in the late 80's(still have scar). I immediately started lightly sanding all my fins as soon as I got the board from my shaper(trailing edge). This was back when all fins where glassed in. As stated, the FCS and Future fins don't seem that sharp so I haven't done this in years. But, if it feels sharp to you Toby, I would lightly sand it. You will not notice any difference in performance. :D

BTW, why don't all kiteboard directionals use either Futures or FCS(like the Rawson)? Not a big deal since most of the ones on the market don't perform like a real surfboard anyway.

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Re: do fins really need to be so sharp?

Postby longwhitecloud » Sun Oct 03, 2010 3:12 am

Probably the ones coming out of Slovakia. I emailed and told the manufacturer as i needed 500 but still they are way too sharp - would go through your skull i reckon if head hit board hard with it... crazy!

a bruise and you can stay on the water, a cut and you are off water or up for septicemia!

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Re: do fins really need to be so sharp?

Postby longwhitecloud » Sun Oct 03, 2010 3:25 am

for most surfers, it does not matter really, so the sharper the better


Surfers blunt down their fins if they get sharp from wear. A fin cut can stop you surfing in the tropics due to coral or regular infection. It is easy to kick the fin hard while sitting on your board paddling around.

I guy in Perth sliced his neck with the fin of his kiteboard while kiting - he did live but i think lost a lot of blood.

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Re: do fins really need to be so sharp?

Postby zerogee_ca » Sun Oct 03, 2010 4:42 am

I have been using these Pro-Teck Power Flex fins. The edges are rapped in a flexible material to protect you from cuts. They are available for FCS, Future and Lokbox fin systems. They seem to work good in my Underground Freewave (which has Future boxes). They have a cool factor too, they are clear fins with translucent colored edges. I have been told they look great in the sun :D

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Re: do fins really need to be so sharp?

Postby windmaker » Sun Oct 03, 2010 9:09 am

F-One is coming in 2011 with a new fin system for their TT called unibox. They fit on the board without screws, the idea being to reduce the thickness of the fins which is limited by the thickness of the screws.
So these fins will be thinner and probably more prone to cutting through "things".

Any real advantages ? Maybe for speed sailing.

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Re: do fins really need to be so sharp?

Postby Peter_Frank » Sun Oct 03, 2010 9:20 am

Future fins are for waveboards - I assume you were talking about TT fins Toby, or have you switched to surfboards now ?

Anyway, the bigger the fins, the bigger the problem with sharp fins :o

And the smaller the fins, the less problem you have if you sand them down to be really blunt, so just do that..

On a TT they are so small that sanding them down would hardly be noticeable for anything but pure speed riding (but on the other hand, as said - you would hardly ever come in contact with your fins unless you do board offs)

But TT fins are also sharp on the "bottom" and not just the trailing edge - and I have even seen some with a sharp leading edge.
Can be very risky regarding getting cut, when no on the board, true :cry:
So as said - just sand them down if they appear "threatening" 8)



On a surfboard it is more critical, if strapless - as you can easily land on the board jumping or doing aerials :roll:
Strapped there is only a smaller risk, when the board tumbles in the wave with you - but the risk is there :-?

On a raceboard it can also be very annoying - as eventhough you never "land" on your fins - you will very often come in contact with the fins because of their very size and number :o
So you can easily get small cuts or wetsuit cuts even when just waterstarting and placing your board if not very cautious :(
So blunt fins would REALLY be a good and practical thing here :thumb:
BUT, those racing seriously would usually aim for any speed (less drag) gain possible, so many would have really sharp fins :wink:


Just my view....

:naughty: Peter


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