|Futures fin screw problem
wife's brand new surfboard has Future Fins and one of the screw holes has
been stripped. Am not sure how it happened. The screw goes in ok for the
first 3/4 of the way down, then at the end it just twirls and doesn't grab
the fin. The Future Fin company sent me bigger screws, but the same problem
also happens. Do you have any suggestions about what i can try?
A: most of the time, the problem is not with the screw threads, but with
the fin base - when the base is too short, the fin ends up pushed against
the back pin, which places the notch in the front "out of reach" for the
screw. See if there is any kind of slop fore & aft. If there is, make little
shims (out of yoghurt tub lids etc) and place those under the aft pin. Keep
adding shims, until the fin just barely goes down in the front. Tighten
screw. Presto - I hope!
|Small area of flex
Q: I was hoping I could get a second
opinion from you. I just discovered that my Exocet O-Wave 2 has a small area
about ~6 inches left of the mast base box front end that flexes. The area of
concern is about 1/2 the size of my heel. This area still feels firm but
obviously stands out since there is no flex elsewhere. There are no visible
cracks and no sounds when I press. Anyhow, the local advice and my
inclination is to keep sailing until there are significant changes like
cracks or soft mushy spots. Your thoughts and comments would be greatly
A: sounds good to me! if this was further back,
between mast box & straps, I would get nervous, since the stresses there can
be remarkable. But if this soft spot is well away from the rail, and towards
the forward end of the mast box, I would check it regularly, but keep going.
New Life for Old Longboards - Ducktails and
Q: It seems like the Kona and other
new designs aren't that different from the older longboards, but they have
added ducktails, etc. Has anyone tried adding a duck tail or cutaways to old
longboards? Any thoughts on how well it might work? How would you do it?
A: like, with a
no, really, the big difference between then and now is about 25 pounds, and
those are a whole lot harder to shed than some bits in the tail.
But, hey, if ye olde sled gathers dust in the garage otherwise, why not go
Q: I have a 1997
ON Race 289 (designed by Gunther Lorsch) that I bought used a few months
ago. The board weighs in at spec. (6.8kg with pads and straps).
But I noticed that around the top of the power fin box screw access hole,
there would be droplets of water "sweating" out.
Examining the interior of the fin box under a bright light, I can make out
that the entire fin box has a hairline crack running from front to back the
length of the fitting.
Since the board is still light, I have these questions:
1. Is the powerbox plastic casting encased in some kind of material that
might prevent water from entering the core of the board? Maybe just
migrating around the skin?
2. I weight 84 kg, and sail the board under a 7.2 rigged at minimum settings
fully powered with a 41 or 44 cm fin. GPS has put me at 49 kmph. What is the
likelyhood that the fin box will fail catastrophically under load? Should i
specifically NOT jump it any more? ;)
I have been
wondering if there is some sort of sealant that I could spray into the fin
box that would seal that crack? Something that would not interfere with the
seating of the fin?
A: good news is
that most well-built boards have a substantial cartridge around their fin
boxes that prevent water migration.
Bad news is that, yes, with a crack running around the entire fixture, you
have lost its structural integrity.
Some sort of sealer squirted in there would, yes, seal the crack (but
sealing would not appear to be a problem), but would do nothing to restore
the strength of the box - which is.
its got to come out, I'm afraid!
|Softop mast track
Q: I just managed
to get an 11 foot softop.
Pretty slow for solo surfing, but I'm having fun tandem with the kids.
Want to drop a mastrack in it for summer schlogging.
It's EPS right, so can I use West system? Slow cure. Any better recc?
I wasn't going to re-inforce outside the box with divinycell or anything,
not planning to load it up that much, and would prefer to keep the deck
Any input welcome, also position will be a guesstimate unless someone's done
A: you can
reinforce it now - or you can reinforce it later... omitting that Divinycell
really is a bad idea (there is a particular brand Epoxy sandwich board out
there that thinks they can get away without the Divinycell (did anyone say "Boardworks"?)
and one out of two I see here, leaks. Truly, it does not work!
As far as that gaping hole in the EPS: if you go at it slowly, patiently,
with a sharp Xacto knife, you can remove a generously-sized bit of EVA foam,
do your thing with the mast box, then re-install the EVA. I just did fin box
surgery on a fully padded beginner board, and its not all that obvious, go
http://www.boardlady.com/customerpics.htm, its job #4712
Q: I repaired my
freestyle board that someone broke for me, so replaced the Divinicell
(thanks Joel, I had a little left over from the last repair, still owe you a
beer sometime!), glassed over, then finished with a layer of carbon
weave over the top. Looks sick, but someone pointed out that leaving carbon
exposed might not be too good as UV could damage it, or heat could damage to
the EPS core. Should I worry? I live in the UK so it's not going to get
massive amount of UV, but we occasionally get sunshine and wind together.
A: just go fast
enough always, so the windchill keeps it cool! Or how about those nifty
mister thingies they have at Disneyland?
no, honestly: the proof is in the pudding - uh, in the feel of the thing: if
its uncomfortably hot to your hands, its uncomfortably hot to the guts of
your board and ought to be covered
Q: I have this
problem when brush applying a second coat of epoxy over already hardened
epoxy. As soon as i have applied it I get these "puddles" that dry out ie.
the fresh epoxy retracts itself to leave an awfully uneven finish.
What is this phenomenon / how can i avoid it ?
I have already tried using different types of epoxies without any better
A: the problem is "amine blush", a waxy substance that forms a film over
Epoxy as it cures. Its as good as a mold release, so you need to get rid of
it (sandpaper, or purple pad with water), before applying the next layer. Or
- apply the next layer BEFORE the amine blush happens, i.e. BEFORE the first
layer has cured completely
Q: I have seen
this "waxy" film develop before.
My problem appears also when applying epoxy coats on non treated ply wood
and many other surfaces as well (plastic, polyester surfaces, well sanded
down epoxy, ...)
Have had a few chemists and local experts diagnose the problem, but aside
from comments like "autofobicity" have not had much help.
To get a clean, glass like finish, does one use a "special type" epoxy?
A: "autofobicity" - now there's a good one!
Ok - puddling, fish eyes, all the other unpleasantnesses associated with
coatings, Epoxy & otherwise, are due to some contamination or other. If not
the amines from a previous Epoxy coat, then how about dust? moisture?
ambient, or from the long-suffering tank of your air compressor... How about
solvent residue from your wiping things down? oils from your hands? oils
from the wood you are coating?
Keep it clean!
Kevlar... is it worth the effort?
Q: I would like to
ask you some questions about working with Kevlar ™...
I have a board in the shed that has an absolutely mashed nose done by a
friend with a useless spock attempt. I (perhaps stupidly) have offered to do
The nose is split straight down the middle to about a foot (so we are
talking a big repair). I was going to glass sandwich the underside as I
normally would for such a repair. However, I have recently been given some
heavy weight kevlar by another friend and would potentially like to trial
the kevlar on the deck of the nose repair 1. to see if I can use it and 2.
to try improve the impact resistance of the nose in light of the fact he
will almost certainly try another spock! Should I bother or should I stick
I have heard tell that Kevlar ™ for the wannabe repairer is nigh on
impossible to work with (and for this reason I have not used it before) are
there any tips you could give me to make the whole experience easier?
My plan was to vacuum a layer of kevlar on the deck of the board along with
a standard glass sandwich i.e. glass/airex/glass/kevlar/glass
Does this sound about right or should I be using it on the hull too?
In light that the kevlar cannot be sanded back following lamination how do
you get it nicely faired in with the original materials?
A: I hate it I
hate it I hate it!!! Kevlar is such a pain! and noses get damaged, anyhow.
So I go with regular glass laminations, and then add padding.
If you insist on the Kevlar: grind a pair of scissors to an almost square
edge (and be prepared to re-sharpen after 2ft of cutting Kevlar...). Bury it
deep under some fiberglass, so that under no circumstances will you have to
fin gashes in surfboard rail
Q: I got into a
fender bender at my local overcrowded beach break. A board shaper who
happened to be in the parking lot told me that these cuts were small enough
to fix just by filling them completely with 2-part epoxy, covering the cured
patch with a little cloth and resin, then painting with acrylic.
What's your assessment? I don't think the damage reaches as far as the fin
box, but I can't tell without some surgery. I want to fix this properly,
structurally and aesthetically, but I'd like to do it myself. Living here in
NYC my work space is basically the sidewalk in front of my apt. building, or
the beach parking lot, so I have to keep things simple.
can i fill the gaps with epoxy and call it fixed? or do i really need to
undertake a more complete repair such as that shown on the
Repair Basics page, which is the closest thing i can find on the site to
my board's damage.
btw, as for testing presence of water, taping a layer of plastic over the
holes and putting the board in afternoon sun yielded a few microscopic
droplets of water, but not a general fogging of the plastic.
A: to simply
fill - or to rebuild with Divinycell depends on
1. where exactly in the board this cut is located; and
2. what sort of finish quality you expect from your repair.
as to 1.
if located in the middle third of your rail fore & aft, it is imperative
that your repair moves the same way as the surrounding, original material.
It should therefore be reconstructed using like materials, i.e. I replace
the broken stuff with exactly the same bits, layer by layer.
If located near the ends (such as your gash), board flexing is almost
non-existent, and you can get away with a more "basic" approach.
as to 2.
all the materials in your board expand & contract with temperature and air
pressure changes. If you introduce a big blob of an "alien" substance (such
as a chunk of filler into a collection of layers surrounding Divinycell),
then your big blob will always stand out.
If that is ok with you, go right ahead!