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#1
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America's Cup sail design
"Gogarty" wrote in message news I have been doing a lot of Googling but I can;t find an answer. You have no doubt noticed that the sails on the current crop of America's Cup challengers are not triangular -- even with a huge roach -- but trapezoidal. How do they maintain that shape at the head? Is there a gaff at the head parallel to the boom? How do they keep the head of the sail from falling way off to leward? Is there some arrangment of masthead sheets that keep the head parallel to the boom? It looked to me like there's a gaff, of sorts, at the headboard. |
#2
posted to rec.boats.cruising
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America's Cup sail design
"KLC Lewis" wrote in message
et... "Gogarty" wrote in message news I have been doing a lot of Googling but I can;t find an answer. You have no doubt noticed that the sails on the current crop of America's Cup challengers are not triangular -- even with a huge roach -- but trapezoidal. How do they maintain that shape at the head? Is there a gaff at the head parallel to the boom? How do they keep the head of the sail from falling way off to leward? Is there some arrangment of masthead sheets that keep the head parallel to the boom? It looked to me like there's a gaff, of sorts, at the headboard. Is that what they're calling a "flipper" or "flopper"? I seem to recall a name like that. -- "j" ganz @@ www.sailnow.com |
#3
posted to rec.boats.cruising
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America's Cup sail design
Capt. JG wrote:
"KLC Lewis" wrote in message et... "Gogarty" wrote in message news I have been doing a lot of Googling but I can;t find an answer. You have no doubt noticed that the sails on the current crop of America's Cup challengers are not triangular -- even with a huge roach -- but trapezoidal. How do they maintain that shape at the head? Is there a gaff at the head parallel to the boom? How do they keep the head of the sail from falling way off to leward? Is there some arrangment of masthead sheets that keep the head parallel to the boom? It looked to me like there's a gaff, of sorts, at the headboard. Square or rectangular cross-section battens: http://na.northsails.com/northenews/March07.htm Is that what they're calling a "flipper" or "flopper"? I seem to recall a name like that. Flippers or batwings are to help support the top of the genoa, sort of like an external batten. See: http://snipurl.com/1lfl1 DT |
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