Ecco un mail di Evert van Veen che fa un buon summary:
g von *Evert van Veen
*Gesendet:* Donnerstag, 18. August 2011 13:10
*Betreff:* Re: [contender] Epoxy Vote
Thanks for all the contributions thusfar. From most I have l
lot. Regretfully hardly any Germans and Danes in this exchange, both
countries where the Contender thrives, especially in Germany where many
youngsters have entered the class.
Perhaps it is worthwhile to post a summary of the discussion on media
which are read by them (The
It is hard to make an objective summary but will give a try from what I
ve understood thus far. Well some more personal comments are embedded
in this as well.
* Difference between new boats (when epoxy would be allowed)
There seems to be hardly any regarding speed by using epoxy as such.
Hull shape, balance in weight, how
the pressure of the mast and stays
(not mentioned yet, I believe) is divided into the internal structure,
etc., etc are far more important. Epoxy will not change that. Epoxy
would add to the building costs of the hull but that difference is
ding the overall costs of a new boat.
However, IF epoxy would make glasfiber boats stiffer, then they would
as Andrea has suggested
as stiff the epoxy plywood boats. And
that can only be a good thing. Will come back to that.
* The differenc
e between older boats without epoxy and new boats with
First we have to compare only with what is similar. Epoxy is used
already, in Vito’s plywood boats and in composite boats (in the latter
case I am not sure to what extent, probably not for stiffening
hull). But anyhow, the comparison can only be made between present
vinylester boats and future like boats with epoxy. From what I
have understood, the main advantage of epoxy is that it will retain its
stiffness while the other materials tend
to become softer in the course
of time. No one has mentioned thusfar how long that takes, btw. But ok,
that puts older boats to a disadvantage.
To my opinion that disadvantage is marginal as well. Except for a Vito
(about which more later) you can immedi
ately deduct at least 1000 euro
when you have made your first sail with the new boat, mast and the whole
lot. And as suggested already, the cost of the hull is only a small part
of the total cost of boat. Fittings, rudder, centreboard, mast etc.
to 2/3. Again, epoxy will not change that.
It will have no effect on boats with gear older than, say 5, years. The
price has gone to the bottom already and guys and very occasionally
girls looking in that category will not consider buying a completely ne
boat because that has been made with epoxy.
Of course, it might have an effect on relatively new boats (like mine).
And today’s prospective buyers of a new boat might want to wait whether
this rule change will come about or not.
* The extinction of
That extinction of wooden boats in other classes might for half part
have completely different reasons. Also in the OK dinghy and Vaurien
(not known to most of you) there are no wooden boats built anymore, or
hardly. That half part due to the
fact that these glassfiber boats are
simply faster. Such boats were originally designed to be cheaply built
with wood, a few planks and sharp edges. The glassfiber boats allowed
maximum use of the class rules for softer edges between bottom plate and
plates and more bend in the bottom plate. I wouldn’t be surprised if
this applies to the Fireball as well.
That’s one half of the story. That half does not apply to the Contender
which is round already. And in principle wood holds better, especially
lation to the older polyester boats when the vacuum building method
was not used. We also see beautifully restored 30 years old plywood FJ
competitive here, while the polyester boats of
that age are extinct.
The other half, which a
pplies to the Contender, is that wood has become
very expensive and building in wood even more so, if you are not doing
it yourself. Which brings me to the Vito’s. These are extremely
inexpensive! A Dutch boat builder gets a heart attack if I mention the
rice of a Vito. Such a boat would cost at least twice here. And then of
course, you don’t even have a Vito. The Bonnezzi’s have been building
these boats with a very small margin and mainly as I see it for love of
the class, love of the craft of building.
That cannot last and IF epoxy really makes a difference it would simply
mean that we will keep having boats with similar properties regarding
stiffness and longevity (though without their looks, there should be
penalty for those who paint the hull of a Vi
to) without the price of a
epoxy plywood boat.
Andrew’s remark about ‘profit’ in general has been sufficiently rebutted
by Gill. Nobody can live from only building Contenders and adding epoxy
will not change that. Sometimes I wish that a builder would mak
e such a
profit on Contenders that he would start advertising or take the risk of
exporting boats to areas where the Contender is marginal or non
existent. We must do that and we don’t, but that’s another issue.
Also Andrew’s price comparison due to allow
ing carbon masts etc. has
been rebutted. But some extra expenses have been inherent to that
change. We save on their better strength. More than one alu mast came
back broken or unintentionally bended after drilling for natural gas on
our shallow dutch lake
s. I have not seen any of that with the carbon
mast. The same applies for tiller extensions. With they were alu Graham
Scott brought several to meetings, always sold them. Does not happen
anymore. And the carbon boom is a great invention which has saved at
least me from many capsizes and headaches.
The Contender is still alive because it has allowed marginal changes,
keeping it up to date. Of course carbon for the hull is out of the
question and changing the hull weight as well. As I see it, allowing
on the full range, and lift that strange differentiation where it
is allowed and where it is not, would be one of those marginal changes.
More could be said, must start working again to collect money for a
possible excursion to Florida next year.