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When you folks are all done picking what parts to use you might find this a bit helpful. I found that North Sails has "Tuning Guides" for many of the one-design sails they sell, unfortunately not for the Harpoons. I emailed them and got this response. It may be helpful to set up the initial "rake" of the mast (front to back set), which is controlled by the shroud adjusters. Also, you can get some idea of the tension they expect (but harder to measure). The second paragraph Ethan provided are suggestions for improving performance (which I don't totally understand :P ).
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Gene, Your note was forwarded to me as we are the builders of the North Harpoon 5.2 sails. Our web site is at http://northsails.com/gulfcoast/, and you can follow the link to the Harpoon 5.2 prices and info. At this point we do not have a tuning guide posted, but here is some basic info that I have gathered. If you have any question just email me.
Thanks, Ethan
Rake – using the jib halyard, establish a radius off of fiberglass molding at mast step, swung forward to headstay, and then measure down to the headstay pin. Range is from 3” to 5.5”, with shrouds at 200 lbs.
In-hauling the jib in light conditions would be good. 4:1 on jib halyard would be nice, or 3:1 Ratchet on mainsheet. Different jib cleats for better tacking.
Ethan Bixby North Sails Gulf Coast 727-898-1123 727-385-7775 (mobile) http://www.northsails.com/gulfcoast Skype: ebixby
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