How Does it Work?

How do you get the fins out?

Simply loosen the two inner grub screws and remove the fin in a gentle, upward rocking movement, taking care not to push either corner of the fin into the underside of the surfboard.

What position does what?

By moving the fin towards the nose of the board increases the boards maneuverability; conversely moving the fins towards the rear of the surfboard increases the boards drive and holding power. There is an implicit trade-off between maneuverability and drive and only minor fractional adjustments (i.e. 1mm) are necessary to produce noticeable effects. Similarly by toeing in the fins towards the nose of the surfboard increases the boards maneuverability; conversely rotating the fins away from the nose and towards the rail of the surfboard increases the boards drive and holding power. Finally by increasing the fin\'s splay outwards towards the rail increases the boards maneuverability; conversely straightening the fins splay towards the centre stringer of the board increases the boards drive and holding power.

What do the outside and inside screws do?

The inside screws hold the fin firmly in the desired horizontal position, whilst the outer screws fix the i-disk into the desired toe-in position.

Does the whole i-disk come out?

Yes

Why does the back fin rotate? Is it necessary?

No, but is does allow for adjustments in instances where there are manufacturing placement errors.

What is the standard degree of splay built into the fins and neutral i-disc?

The fin already has a built in 6 degree splay whilst the neutral [blue] i-disc has no additional splay.

Do you need a special key?

A standard stainless steel metric Allen key will fit both screws. Note that this Allen key may also be suitable for competing fin systems.