Fin Specification & Performance

Fin Specification & Performance

How strong are the fins?

There are a number of fin compounds available, from standard composite through to full fibreglass. In most instances the strength of the standard composite is more than adequate for most surfing needs. In certain circumstances however the carbon composite may provide a more suitable solution to a surfers needs as it is 30% stronger, 13% lighter and yet still possesses an acceptable degree of flex. For a glass on feel our fibreglass fins are the most suitable.

If you knock the fin out what gets damaged?

Extensive impact tests have been performed to determine the optimum and most desirable breakpoints. On severe side impact the fin snaps at the lug whereas during severe frontal impact the fin will snap out of the disc.

Are there markers for guidance?

Markings to indicate toe are shown on the interdisc and box. Each interdisc is also clearly marked with the degree of splay, eg 0 (0 deg), 4 (4 deg) etc…. The “+” sign on the discs indicates the side where the splay is being increased.

What colours are available?

Fins: standard composite fins are currently available only in black. Fibreglass, Hexalight and RTM Carbon based foils come in a full range of colours as per our catalogue.
Discs: All discs are colour coded, with blue indicating 0 degree or neutral splay, clear indicating 2 degree and yellow indicating 4 degrees.
Boxes: All boxes are produced in standard white material

Can you change fixed fins to 4wfs?

Yes, existing fins can be removed and 4WFS installed on the glass as per the relevant installation guide.

How are the fins initially positioned on the board?

All shapers have their preferred positions and the fin system will be installed according to these preferences. Thereafter fin positioning can be changed if required – refer to the fin adjustments fact sheets for more on the topic.

The edges are really sharp!

All edges are softened at the manufacturing stage using a blade. If the user prefers to soften the edges even further they are at liberty to do so using a standard blade.

What fin foil range is available?

There is a wide variety of templates in a number of materials, that will suit the requirements of almost every surfer. See our various product factsheets for more on this.

How long does it take to put your fins in?

Under three minutes for a set of fins.

Sometimes it is hard to get the fin into the lug?

Where the fin lugs are difficult to insert into the interdisc slot, use vaseline or an alternative oil lubricant on the lug to assist in the insertion process.

Can acetone do any damage to the interdisc?

Do not let acetone come into contact with the interdiscs as this affects the structural strength of the discs. If you have a need to clean the interdiscs, rather use a damp cloth instead.