m (road clearance)
m - 0,35 keel up
keel (hoisted on the main halyard)
unsinkable within the french legislation
mast - boom - bow sprit - hull - deck - fin keel
- rudders - tillers
tech composites - "Autostruct" process
It is in the
des Grillons, in Toulouse, that Pierre Lallemand,
with his crew, has st up and now develops this building process
"Autostruct", with the support of the
The quality control, the traceability, are their main concerns as
it is in aeronautic industries, their neighbours.
The solid hull
clinkers, stringers, frames are
made out of prepeg cured in an autoclave under a pression of several
atmospheres, all in one step ( "Autostruct"
deck is built 100% out of carbon with Nomex core ,
the fin keel out of massif carbon.
They are cured in an autoclave too.
hull finished on september 17th, 2002 in the Atelier des Grillons
begining of the project
goal with the Open 6,50 has
been to build stronger and lighter
composite structures in order to obtain
performances never achieved on sailboats.
Some of these concepts have been tested on our
open 50 and 60's as well as the Giro
34. But they usually come at a rather high cost...
With a group of partners from the surroundings of Toulouse, we have
developed a new technology to
produce a radically lighter boat. A lot of the development and the
construction methodology are derived from the Aircraft
industry using carbon fiber cured in autoclave.
We have received the support of the Midi Pyrenees region, the CRITT
of Toulouse, the Socam, CTA, Latecoere and several other aircraft
equipment manufacturers of the area.
The hull is built with a process called "Autostruct"
which allows the construction of the shell,
stringers and reinforcement all in one piece. The effort
is concentrated on a flawless construction that can be translated
A boat of that dimension half way between
a dingy and a cruising sailboat seemed to us the right size to validate
with a very low center of gravity thanks to her carbon mast and
her heavy ballast (deep keel, lead bulb, carbon
fin ). This ballast accounts for 43 % of the weight of the boat.
shape of the hull provides a lot of stability and the ability to
carry a large sail area.
large open cockpit
allows the crew to move for and aft to adapt to the sailing conditions.
Under the roof a shelter is accessible by a watertight hatch, closed
at sea, protecting the gear stowed inside.
Hiking position(legs inside) is natural ans comfortable.
Extremly while planning from bload to closed reach, almost touching
the ultimate dream : planning while beating
Open 6.50 is very hard to capsize and unsinkable.
At sea the closed hatch is watertight.
Its width adaptd
to the road clearance,
the Open 650 is easily trailerable.
It is with a lifting keel : it is brought up with
the main halyard or a winch on a leg and tackle located aft of the
The boat is easily launched from its trailer.
very light mast can be stepped directly by hand.
sensations : easy, safe on a strong boat
2004 regattas : Spi ouest, grand prix de l'école Navale
à Brest, bol d'or on the Genova lake (with a specific adapted
ig and sail).
JM Finot bol d'Or |
Pascal Alemany, Ecole Navale
Pascal Alemany, www.voile-cotiere.com
6.50 class association
association is chaired by Eric Vernet.
For any information : firstname.lastname@example.org
, Stéphane Menuet : +33(0)6 22 41 52 17
It aims at creating bonds between the owners and helping
gather the boats in meetings : friendly, sporting and convivial
2004-2005, six meetings have been done
: north Brittany, south Brittany, La Rochelle, La Grande
Motte, Genova lake.
54 bis Bd Pasteur
33 (0)5 46
02 35 39
33 (0)5 46 02 20 93
1, rue Pierre Vaudenay (les Metz)
78350 Jouy-en-josas, France
33 (0)1 39 46
33 (0)1 39 46
dealer for Switzerland : Wintech Yachting http://www.windtech.ch/open