Newbie fin question?

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yabbadabba
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Newbie fin question?

Post by yabbadabba » Wed Aug 24, 2016 9:42 pm

Hello to all,

I have just purchased a Mega Intruder and not played with fins before.

As a starting guide is there any suggestions as to how many fins to use and what position?

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Jim Tait
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Re: Newbie fin question?

Post by Jim Tait » Thu Aug 25, 2016 8:08 am

This page is a good starting point

http://www.surfkayakskills.com/fins.php

The exact process you use will depend on your approach to fiddling with things...... I know of people who spent a session adjusting the fin position time after time. Personally, I started off with them about 1/8 of the way back, then adjusted them between sessions - If it felt too loose I moved them back again.
And then you start wonderig about fin size, and if I should try smaller ones.........a whole new can of worms opened !!

Jim

yabbadabba
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Re: Newbie fin question?

Post by yabbadabba » Thu Aug 25, 2016 8:15 am

Ah thanks Jim, will have a read then go for a play when the surf allows :-)

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Re: Newbie fin question?

Post by Daker » Thu Aug 25, 2016 3:27 pm

Just to add, you will likely find that to start off you want to use the standard (maybe 3.5 inch ?) fins that come with most boats as they provide a really solid grip and are unlikely to slip-out as you get used to the boat + waves.

Once you get a bit better and have experimented with moving them forward to loosen up the boat, it may then be worth experimenting with smaller fins which will definitely make the boat easier to turn and slip the tail. But, in clumsy hands, they are also more likely to lose grip on a bottom turn which can make life interesting if you are out in bigger conditions.

So, play around with then and just see what works best for you in the confidence v. control v. ease of turning stakes.

Junior
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Re: Newbie fin question?

Post by Junior » Tue Sep 06, 2016 8:27 pm

I paddle the Fluid Element which uses a quad set up. Which fins should be symmetrical and which should be asymmetrical?

The Element fins I ordered from 4WFS are all asymmetrical?

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Re: Newbie fin question?

Post by Daker » Tue Sep 06, 2016 10:43 pm

Generally the middle fin on a Tri setup is symmetrical, the others can be sym or aesymetrical.

On a quad having them all ae makes sense as they are closer to the rails and only generating lift in one direction (unlike the centre fin on a Tri that has to work all the time)

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Re: Newbie fin question?

Post by Junior » Wed Sep 07, 2016 7:56 am

Sorry, I got that the wrong way round!

All the fins that came through were symmetrical

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Just_Surf
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Re: Newbie fin question?

Post by Just_Surf » Wed Sep 07, 2016 10:39 am

On a quad the front fins should always be asymmetric, for the rear fins you should use asymmetric if you want more drive, symmetric if you are finding the boat hard to transfer from rail-to-rail.
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Re: Newbie fin question?

Post by Junior » Thu Sep 08, 2016 12:11 pm

So how will my boat react if the quads are all symmetrical?

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Just_Surf
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Re: Newbie fin question?

Post by Just_Surf » Thu Sep 08, 2016 6:49 pm

You'll have less drive through the turns, especially bottom turns, but it should flow really well from rail-to-rail. Of course, a lot depends on the design of the boat too, I've not surfed an Element, but that's a generalisation for any boat running quads; all asymmetric = loads of drive but a bit stickier going from rail-to-rail, all symmetric = fast transitions but less drive.
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Junior
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Re: Newbie fin question?

Post by Junior » Thu Sep 08, 2016 7:40 pm

Am I right in thinking 'drive' is the force that propels you out of the turn?

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Just_Surf
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Re: Newbie fin question?

Post by Just_Surf » Fri Sep 09, 2016 8:03 pm

Kind of, it's an acceleration through the turn, that feeling of speeding up as you go through the turn, you accelerate towards the centre of the turning arc.
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