60ft trimaran technology - pt2


 
Today we look at wingmast that cant and can their rake changed
This article follows on from our interview with Sergio Tacchini's Damian Foxall and yesterday's look at appendage technology in the 60ft trimaran class Sails The sail wardrobes on the 60ft trimarans are all fairly similar maintains Antoine Mermod, who handed the technical side of Karine Fauconnier's Sergio Tacchini 60ft trimaran campaign. A majority of sails are built in 3DL or D4 if they are made by the popular French loft Incidences, otherwise Cuben fibre is used. Unusually laminates sails are not used for their potential weight benefits. "They are not so much lighter than panel sails, but they have a very good shape and it keeps it for a very long time," says Mermod. "So in comparison with a Kevlar sail it is the same weight. I'm sure they will try to make them lighter, but the problem is to keep a good shape for a long time and not to break the sail. Under our rules we can have 15 sails over two years. So we can have three mains, three Solent jibs, three trinquettes, three gennikers three RORC (storm jib) and so we have to make a good choice for that. We use Cuben fibre for the genniker because it is very light which is good for short handed racing and it is waterproof which is better if it is on the deck. And sometimes we use Cuben for the little jib for the same reason - it is always on deck and very light, but for the mainsail, trinquette, solent, we use Kevlar or carbon 3DL or D4." Masts The powerhouse behind the 60ft trimarans are the towering rotating wingmasts. Sailing with this equipment is quite a unique experience says Damian Foxall. "It is not like a dinghy rig where you are trying to bend the rig or reduce sail shape, it

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