Sport Today

+ Standart / "US" box: This is the 9,, wide slot type for fins with
  pin and plate. Allows for adjustment of the fin position.
  Also frequenly used as mast track (with opening at end instead of middle).
  Use: Most custom made wave boards.

+ "E" box. Nearly the same us the US box but deeper.
  Was used in most production
  boards (F2, Fanatic, Bic) before the bolt through types came in vogue (around 1992)
  Still used in some production wave boards or beginner boards.

  You can use an US fin in a E-box, IF YOU FILL the gap between bottom
  of box and the fin base (glueing on a piece of sail batten on the fin works well).
  You also can use E-box fins in a us box by sanding / cutting off material
  from the base as necessary.
  Your 89 F2 Orbit (is it really 89 ? I thought the Orbit came out in 90)
  most probabely has this type of box.

+ Tuttle box: Bolt-through type box with 2 bolts, parallel side walls.
  Very sturdy, often used in custom race and slalom boards.
  No position adjustment possible.

+ Power box: Conic side walls, one bolt bolt through. Used by F2, Mistral, Hifly
  and many small series manufacturers (AHD comes to mind).
  No position adjustment possible.

+ Power Trim System: (Slightly) Conic bolt through system, using multiple bolt
  threads in te fin. Fin position is adjustable.
  Used by Fanatic, Bic and Copello.

+ Conic Box /"Tiga" box: 2 bolt bolt through system with conic side walls.
  Only used by Tiga.

You should be able to get fins for all types of boxes from a good shop.
Some manufacturers make only one generic base and offer adapters to all
other boxes.
Be carefull not to overload a US / Euro box with too large fins, around
13 - 14 inches seems to be the maximum they can reliably stand

Wolfgang
---
Wolfgang Soergel, M.S. (C.U.)
Chemin Benjamin-Dumur 6         Pirckheimerstrasse 4
1008 Prilly, Switzerland        D-91207 Lauf, Germany

http://dewww.epfl.ch/~wsoergel

I'm confused which type of box is which...  Is there a FAQ where these
are listed ? Perhaps someone could tell which type of box F2 Orbit -89
was equipped with. I have been looking for fin, but only type they got
in shops (in Finland) is the new type with bolt going throug the board
(power box ?).

Thanks.

Didn't you forget the Reboks? They attach with a unique lacing system.
I've heard that they can point directly into the wind, go amazingly well
off the wind, work well in weeds or on rocks, are super durable and can be
purchased in almost any sporting goods store for about the same price as
other quality fins ;-)

Skip

Cape Cod-Maui-The Gorge-San Francisco
Neilpryde-Tiga-Fiberspar

Wolfgang
(note that my swiss adress is about to expire)
---
Wolfgang Soergel, M.S. (C.U.)
Pirckheimerstrasse 4
D-91207 Lauf, Germany

http://dewww.epfl.ch/~wsoergel

Petri