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Single Fin Surboards?

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Brent4336
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Postby Brent4336 » Mon Nov 26, 2007 6:21 pm

blowhard wrote: with sharp rails to hold through the turns

Not sure thats right, Sharp rails release well, soft rails grip

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Postby Mug » Mon Nov 26, 2007 7:16 pm

I always wondered about this for kitesurfing wouldn't it be better to have less of a tow in on the fins i.e most quads have all of the fins pointing to the nose, if you were to set up the fins to be less towed in (more parallel) wouldn't the board be able to achieve faster speeds, and be more efficient in lower winds because of the less drag.

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Postby Mug » Mon Nov 26, 2007 7:21 pm

not to mention when you are riding on the rail if the board is wide enough the opposite set of fins should be out of the water. So the force from the fins should be pushing in the nose of the board in a towed in fin setup, which i guess will give you better rail hold, but if the rails of the surfboard were sharper you would get nearly the same rail hold.

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Postby blowhard » Tue Nov 27, 2007 1:40 am

Soft rails do create drag and adhere to water with more friction and surface area.

What I like is the water to release and go away at all times ,for fast wave riding and good windward performance.

So I ride on edge most of the time and rarely the flat transition is more than a split second.
So while a thick edge would adhere well it also creates a lot of drag that is not nessasary.During the time my edge has lost control on transition the 4 5/8 fin has taken over for the turn.
I use the Al Merrick design and love the loose feeling of the thin bodied and fat tang surf fin gives me.
While the pintail is down in the water far enough to make sure nothing comes too loose
,Really fun in foamy mushbergers as well as clean faces
Some pics to clarify the profile is almost the same as my surfboad
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surfingwithkites
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Postby surfingwithkites » Tue Nov 27, 2007 8:24 am

Don't let this thread die. I don't have anymore time for forum antics right now. Need to spend the next week in the water due to swell arriving but this idea needs lots of exploration. There are a lot of reasons why single fins could work well kiting (and a few reasons they might not) Been talking about doing some serious research in this area for a few years but haven't made time. Maybe this year. Keep experimenting.

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Postby simonm » Tue Nov 27, 2007 8:30 am

A winged keel ala Cheyene Horan style would also be interesting.

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Postby Nico » Wed Nov 28, 2007 4:18 am

Surfingwithkites,
feel exactly the same, and once we get a moment to try it out we'll probably find out that this will be the next trend/breakthrough.
Thats how it usually goes.
Nico

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Postby Windrider » Wed Nov 28, 2007 6:41 am

Ocean Rodeo's been doing the single fin thing with the Mako's for a while, haven't they?

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Postby TheRussian » Wed Nov 28, 2007 8:21 am

The old NAish sky pirates worked really nicely with a large single fin and small thrusters

Surely for riding a board less powered ie flatter in waves, a single fin must be better/looser, albeit requiring more from the rider possibly

ps Blowhard - nice Mistral Lightning - surely the ultimate low wind single fin design (dagger board out presumably!)

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Postby surfinsmiley » Wed Nov 28, 2007 8:38 am

Brent4336 wrote:
blowhard wrote: with sharp rails to hold through the turns

Not sure thats right, Sharp rails release well, soft rails grip

That`s the one :thumb:

Watch the surfclub boards and the lines they can draw with their six inch thick big round rails. They can draw much higher lines than any modern surfboard.


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