Thursday, January 27, 2011

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IMOCA OPEN 60 WHAT GEAR IS MORE RELIABLE? REPAIRS

After the last break of the wing mast "Foncia" of Desjoyeaux BWR Gabart this becomes a question what type of gear is better in open IMOCA 60. Only a few days ago there was the withdrawal of "President" of Jean Le Cam and Bruno Garcia for broken mast, but this was a different mixed gear. 's the "Foncia" was a break much like he had the "Veolia" Roland Jourdain in the last edition of the Vendee Globe, also with a rotating wing mast, which the sail with a reef in the wholesale and nail the bow wave was breaking the top of the mast, under conditions not too strong, 25-30 knot winds and 3-4 m wave. However, traditional gear, a priori more reliable, also broken, as the "Gitana Eighty" of Loïck Peyron that dismasted in the 2008 edition of the Vendee Globe, also sailing solent and over with a curl of 30 knots. Basically
IMOCA open 60 trees three types of gear:
# Neck rotary wing profile without spreaders and outriggers, like the Foncia, Veolia or PRB (to give three examples of this type of apparatus that have been broken) .
This type of profile allows better aerodynamic performance, particularly downwind, with less weight of the rigging, but also more fragile. # Neck Joint, also rotating with semi wing profile (narrower than the wing profile), with a flat hinged spreaders and diamond. Heavier gear, but it may break, as was the case of "President" in the BWR. # Standard mast, fixed with 2, 3 or 4 double spreaders. Theoretically more reliable but less aerodynamic performance in bearing. However, it also can break, as in the case of "Gitana Eighty."
So I think that the problem of these vessels is the excess power, as it relates sail area / displacement, aided by the canting keel, which makes to take more sail and reach very high speeds, but when they sink their bows into a wave that efforts are under the rigging is brutal. Boats also too extreme for extreme conditions.
In this edition of the Barcelona World Race and go two removed from broken mast, and have not yet begun the toughest conditions in the Indian Ocean and the South Pacific ...

In any case, the rupture mast is a very common injury in this class, also due to the harsh conditions.
Gone are feats like the "alien" Yves Parlier in the Vendee Globe 2000-2001 broke the club's carbon IMOCA 60, repaired without foreign assistance and continued the race.

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