Hunter 410 rig tuning to get main to furl better?

Jun 8, 2004
-na -NA Anywhere USA
Why as a hunter dealer on 1degree of prebend. Based on discussion with B&R owners, ZSpar engineer who designed their in mast furler , Selden and my friend Warren Luhrs up to 1-2 degree of prebend. Chose 1 Degree as the life of the mainsail would last longer.
Apr 8, 2011
Hunter 36 Deale, MD
Quantum had a decent article addressing sail life. They break it down into two categories - shape life, and structural life. Sails will lose their shape long before they reach the end of their structural life and are no longer viable sailcloth. Unless we're replacing sails every few years or less like avid racers, most of us are sailing with sails that have lost some or much of their shape. That's not always much of an issue as we accept the inability to point quite as high, or sail as flat as we did when the sails were new. But at a certain point before structural life is reached, furling mains become a real issue when they lose enough shape and the belly negatively affects smooth and efficient furling. This is both frustrating, and potentially a safety issue if you need to quickly furl the main as a gust front preceding a thunderstorm starts to blow through.

The OP did the smart thing and took the sail to a loft, given the age of these sails is over 2 decades (OP said original sails and hull was built in 2001), and the other issues he's experiencing. I'll just close by saying I bit the bullet last fall and replaced the original sails on my 2009 H36 and couldn't be happier with new radial cut sails. Quantum did a great job at a great price. I'll be selling my still structurally viable sails as there's always someone not yet ready to plunk down the boat units for new sails. I'm definitely enjoying a boat that sails noticeably different than it did last year. Good luck to the OP.
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Jan 1, 2006
Slickcraft 26 Greenport, NY
If you're looking a an old main and are convincing yourself that it is pretty flat, go look at it from the lee side.


Jun 23, 2016
Hunter 41DS Seattle
+1 on just refreshing the main, greasing the upper bearings (which is not easy) on the furler, and of course any and all blocks that may lead lines aft. Once nice thing about in-main furling systems is that the sails need to be thin - hence less expensive. Downside is replacement is more frequent especially if you accidentally carry them in high winds when unnecessary.