Ecco un mail di Evert van Veen che fa un buon summary: ------------------------------------------------------------------------ *Von:*contender@yahoogroups.com [mailto:contender@yahoogroups.com] *Im Auftrag von *Evert van Veen *Gesendet:* Donnerstag, 18. August 2011 13:10 *An:* contender@yahoogroups.com

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Dec 4, 2013 (3 years and 4 months ago)

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Ecco un mail di Evert van Veen che fa un buon summary:


------------------------------------------------------------------------


*Von:*contender@yahoogroups.com [mailto:
contender@yahoogroups.com
] *Im

Auftra
g von *Evert van Veen

*Gesendet:* Donnerstag, 18. August 2011 13:10

*An:*
contender@yahoogroups.com

*Betreff:* Re: [contender] Epoxy Vote
-
Plaques


Thanks for all the contributions thusfar. From most I have l
earned a

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
contender.org

<
http://contender.org
> site

and facebook).


It is hard to make an objective summary but will give a try from what I

ha
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

marginal regar
ding the overall costs of a new boat.


However, IF epoxy would make glasfiber boats stiffer, then they would

become


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
the

hull). But anyhow, the comparison can only be made between present

glasfiber
-
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.

might come

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
w

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
wooden boats


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

side
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

in re
lation to the older polyester boats when the vacuum building method

was not used. We also see beautifully restored 30 years old plywood FJ

dinghies


also round
-

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

p
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

epoxy

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.


best w
ishes,


Evert
-
Ben


NED 2511