How to fix a loose fin?

How to fix a loose fin?

Post by Dick Do » Sun, 05 May 1991 00:35:27


I just replaced the fin on my Bic Rock.  The
new fin does not fit snugly in the box.  Is
there a tried-and-true solution to this problem?

--
*** Dowe                       ...!attmail!whutt!rjd

 
 
 

How to fix a loose fin?

Post by Bob D » Sun, 05 May 1991 03:36:25

In lots of action shots of good sailors locked into their
speed stance, you can see that the big toe on the front
foot is curled up, which I assume to mean that the sailor
is lifting the windward rail.

When I'm trying to go fast, I tend to be pointing with my
toes -- whenever I lift the windward rail, the rig seems
to slow down and I have more of a tendency to spin out due
to increased pressure on the back foot.

Would anybody care to comment on this obscure piece of
stance technique?

 
 
 

How to fix a loose fin?

Post by Juri Munk » Sun, 05 May 1991 17:47:50

Quote:

>I just replaced the fin on my Bic Rock.  The
>new fin does not fit snugly in the box.  Is
>there a tried-and-true solution to this problem?

Cut rectangles out of overhead transparency film (mylar?) and fold them
until they are thick enough to make your fin fit. As far as I know, almost
every fin fits loosely, unless you have a Tuttle/Power/Tiga finbox.

Even if your fin originally fit very snugly, I recommend checking it
every once in a while. A loose fin makes you slower.

   ____________________________________________________________________________
  / Juri Munkki     /  Helsinki University of Technology   /  Wind  / Project /

 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 
 
 

How to fix a loose fin?

Post by Colas Nahab » Tue, 07 May 1991 20:53:54


Quote:
Munkki) writes:
> Cut rectangles out of overhead transparency film (mylar?) and fold them
> until they are thick enough to make your fin fit.

additional tip: glue mylar with superglue, and make enough layers to make it
near difficult to enter the fin box. Then, for final insertion, apply some
petroleum jelly to the fin, so that the mylar layers don't get torn off.

This way you can have a very tight fin, but you can still adjust it in position
without having to re-add mylar on it...

PS: Once you find the "sweet spot", it is very important to fill the rest of the
box with rubson silicones, il will greatly enhance handling!

--

Phone:(33) 93.65.77.70(.66 Fax), INRIA, B.P.109 - 06561 Valbonne Cedex, FRANCE.

 
 
 

How to fix a loose fin?

Post by Erik Lindstr » Tue, 07 May 1991 20:38:04


|> >I just replaced the fin on my Bic Rock.  The
|> >new fin does not fit snugly in the box.  Is
|> >there a tried-and-true solution to this problem?
|>
|> Cut rectangles out of overhead transparency film (mylar?) and fold them
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       You can use a(n empty) Coca-Cola bottle instead.

|> until they are thick enough to make your fin fit. As far as I know, almost
|> every fin fits loosely, unless you have a Tuttle/Power/Tiga finbox.
|>

=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
Erik Lindstroem                      =+  This principle is so
Dept. of Computing Science           +=  perfectly general, that
University of Umea                   =+  no particular application
Sweden                               +=  of it is possible.

=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+

 
 
 

How to fix a loose fin?

Post by Robert Poortin » Wed, 08 May 1991 01:54:22

Soda cans tend to have sharp edges.  I cut my shims from plastic milk cartons.
I am sure there are about 100 household objects that could be used as shims if
one looks hard enough.

Midwest Report:  We finally had some decent sailing last week.  Four days in a
row of 6.0 or better.  Last Monday was awesome.  40+ for over two hours meant
white knuckles and clenched teeth, but a lot of fun.  It was the first time
I had ever seen liquid spray at my local sailing spot.  Swells over 3' made
great ramps for major air :^).  I got beat up pretty badly being a bit
out of shape, but it was definitely worth it.

Bob Poortinga                      It's a hard wind that's gonna blow ...

 
 
 

How to fix a loose fin?

Post by Hens Vanderscho » Wed, 08 May 1991 04:30:23

Quote:

> In lots of action shots of good sailors locked into their
> speed stance, you can see that the big toe on the front
> foot is curled up, which I assume to mean that the sailor
> is lifting the windward rail.

> When I'm trying to go fast, I tend to be pointing with my
> toes -- whenever I lift the windward rail, the rig seems
> to slow down and I have more of a tendency to spin out due
> to increased pressure on the back foot.

> Would anybody care to comment on this obscure piece of
> stance technique?

You mean you haven't heard of the TOE SHAKA?  You witnessed the newest
gesture of coolness and were too analytical to even realize that you were
a mere toe-nail away from awe-inspiring, pure, uncut shredness.
B-)

And in all seriousness, it seems to me that if you try to lift the windward
rail, your toe goes down.  It is when you try to lift the leeward rail that
your weight goes to the heels and your toe arches back around the footstrap.

This would seem to indicate that one could only display the toe-shaka while
turning upwind....( ? )

  - Hens

 
 
 

How to fix a loose fin?

Post by Jonathan M. Richards » Wed, 08 May 1991 07:09:35

Quote:

> In lots of action shots of good sailors locked into their
> speed stance, you can see that the big toe on the front
> foot is curled up, which I assume to mean that the sailor
> is lifting the windward rail.

I think they are trying to get the optimum front-to-back angle of the board. I
have heard many rules-of-thumb, like 15 degrees off the water. This must depend
on the board, right? Anyway, in their effort to hold the board _up_ a bit,
maybe they curl up that front toe.

-Jthan

 
 
 

How to fix a loose fin?

Post by David Ross Pur » Thu, 09 May 1991 04:37:25

Quote:


>Munkki) writes:

>additional tip: glue mylar with superglue, and make enough layers to make it
>near difficult to enter the fin box. Then, for final insertion, apply some
>petroleum jelly to the fin, so that the mylar layers don't get torn off.

Whenever I get a new fin I custom fit it to my fin box. Invariably they
are too loose so I just slap some polyester resin on the fin then sand to
fit. Make sure it isn't overly tight since you might end up breaking things.
Shims are nice if you have boards with different size fin boxes but I don't
and once the fins are set up correctly you don't have to worry about carrying
around extra shims.

David Purdy

 
 
 

How to fix a loose fin?

Post by David Ross Pur » Thu, 09 May 1991 04:49:41


Quote:

>> In lots of action shots of good sailors locked into their
>> speed stance, you can see that the big toe on the front
>> foot is curled up, which I assume to mean that the sailor
>> is lifting the windward rail.

As I was sailing yesterday doing a speed run through the kelp bed I
looked down at my front foot and sure enough my toes were pointing
up. It wasn't because I was trying to lift up but rather because I
had all of the weight on my heels since the board was trying to rail
up. At least that is my explanation. I was on a 4.5 and 8'-8" board
on a small wave fin.

David Purdy