fins and footdtraps - Page 2

cholo · 7th June 2008, 06:43 PM

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)!

Farlo · 9th June 2008, 07:05 PM

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.

James · 9th June 2008, 10:03 PM

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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7th June 2008, 06:43 PM	#11
cholo Member Join Date: Aug 2006 Posts: 33	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)!

9th June 2008, 07:05 PM	#12
Farlo Member Join Date: Aug 2006 Posts: 517	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.

9th June 2008, 10:03 PM	#13
James Member Join Date: Aug 2006 Posts: 235	Thanks Cholo and Farlo. I might take your advice about adjusting the overpowered / underpowered coefficient because it was just my own rough guess.