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Reply to: Nacra 570 aftermarket sails

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[quote=MN3][quote]go with Chip Buck at whirlwind and dacron. I have his sails on my 5.2 and 5.7 and they are amazingly good value for the price. pentex, mylar or other materials are great but the performance benefit shouldn't be too noticeable. [/quote]
every material has pros and cons
this data shows that dacron is cheap and flexible but can't hold a candle to the other high tech sailcloth for stretch and elasticity. so if you want a cheap sail that will stretch and become less responsive over time (and blown out)- go with dacron
if you want a sail that will hold its shape until it dies - go with a high tech sailcloth

also consider cloth weight in your overall plan. i know my f18 sail is about 20 lbs lighter than an old dacron main i have

[url]https://www.northsails.com/sailing/en/2019/12/fibers-fabrics-a-sailors-guide-to-finding-the-right-materials[/url]

"The ideal sailcloth fiber would last for decades of use, stand up to the harsh sailing environment (toughness and structural durability), would not stretch under load (modulus and shape holding) and would be low in cost. But in the real world, available fibers exhibit varying degrees of these attributes with some materials having vanishingly small levels of stretch for weight, but less than desirable durability, while others are tough, but somewhat stretchy. Finding the right balance of properties for your type of sailing and keeping within budget is the key to being happy with your sails."

[img]https://cfd.northsails.com/sailing/wp-content/uploads/2016/09/08122041/fabrics.jpg[/img][/quote]

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