Join Date: Feb 2000
Location: Annapolis, Md
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Re: Odd Issue with mainsail on NA/Spirit23
I was not able to open the link in the original post so I can not see the issue, but the tack fitting is intended to hold the tack of the sail in a fixed position vertically against the luff tension and horizontally against the outhaul. Merely adding a longer shackle will allow the outhaul to pull the sail away from the mast distorting the shape of the sail. If your solution is to add a taller shackle then you will need to add a heavier duty slug at that same point to resist the outhaul.
But without seeing the pictures, my hunch is that there may not be a problem with the sail itself. Most new sails are loose footed and are made with some roach in the foot. If you over tighten the outhaul you will get horizontal wrinkles parallel to the boom. Those wrinkles are normal in heavy wind when you are trying to flatten the sail,. But assuming that the sail is cut properly, the outhaul should be eased in lighter winds until the wrinkles go away.
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Curmudgeon at Large- and rhinestone in the rough, sailing my Farr 11.6 on the Chesapeake Bay