![]() See for complete information and technical articles. Code Zero 1 is used on boats from 35' (11 m) to 50' (15 m) Code Zero 2 on boats from 50' (15 m) through 65' (20 m) and Code Zero 3 on boats from 65' (20 m) to 95' (30 m). ![]() Because furling a Code Zero sail requires high luff tension, an adapter kit is available to convert either the halyard or tack line into a 2:1 purchase. Sealed, hardened-steel, roller thrust bearings handle the high loads. Furler height is minimal so luff lengths can be maximized. The rope rides on a large-diameter eight-faceted sheave that grips the line, similar to the jaws of a self-tailing winch. These so-called structural furlers are engineered to carry full headstay loads on a full-time basis. They are driven by a simple rope driver and use a minimal amount of continuous line. Because a fiber torque rope is significantly lighter than a conventional solid furling rod with a wire stay inside it, many performance sailors now prefer to set up headsails on code furlers as permanent parts of their standing rig. "Now the technology has trickled down, making this high-performance lightweight gear available to all sailors." Code Zero furlers are just that-furlers. Downwind in moderate breeze upto 150 degrees. Upwind angle in very light winds upto 40 degrees. "The first Code Zero furlers were developed by our Custom Engineering Department and used aboard Volvo 60 around-the-world racers," said Olaf Harken company vice president. We bought a very nice Code Zero at Hagoort Sails in The Netherlands. Paralleling innovation in the sail design arena, Harken designed Code Zero furlers to tame the enormous loads generated by the new Code Zero sails, such as screechers, gennakers and staysails, in conditions with apparent wind angles of 30 to 50 degrees.
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