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Old 7th June 2008, 06:43 PM   #11
cholo
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James,

your formula for a slalom fin really works!

It fits what I use after years of trial and error, and also what my heavy friends do use for competition! It's amazing how your simple linear formula fitting an SX with small sails is working good also for in the big sails range (7-8m2)!
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Old 9th June 2008, 07:05 PM   #12
Farlo
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Hi James,
Congratulations, your charts are great!! Just one comment, I find your 1.05 / 0.95 ratio for fin surface and length in under / overpowered conditions a bit conservative. My practical findings suggest me something around 1.1 and 0.9 respectively. But I'm a lightweight sailor and this may play a role (1 Kg = 2.2 Lb). Best regards and good luck for your doctorate.
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Old 9th June 2008, 10:03 PM   #13
James
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Thanks Cholo and Farlo. I might take your advice about adjusting the overpowered / underpowered coefficient because it was just my own rough guess.
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