New England Ropes - Pleasure Marine Technology

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	Practical Application of Line Stretch Stretch is a concern for most serious sailors, especially when it comes to halyards where stretch results in sag. Sag, in turn, allows for improper sail shape which increases drag. Traditionally, rope manufacturers list stretch over 100'. To measure stretch, the line is set to a load that is usually 20% of its rated breaking strength. However it is somewhat difficult to compare stretch characteristics, as most lines have different breaking strengths.
	At New England Ropes, stretch is measured at consistent standard loads (i.e. 100 lbs., 200 lbs., 500 lbs., 500 lbs.). The diagram below makes sense of the numbers derived from this method and illustrates how stretch impacts performance in the real world. Strength in Every Strand: The Importance of Fiber and Construction New England Ropes combines the highest quality fibers with the most advanced construction technology. Every line we manufacture acts as an integral component of a complex system, each with different performance requirements. Nylon, for example, is recognized for its outstanding strength, elasticity and abrasion resistence. It is ideal for applications where stretch and energy absorption are critical, such as in dock and anchor lines. Additionally, nylon suffers minimal strength loss when exposed to sunlight. Polyester has high strength and low stretch characteristics which makes it ideal for running rigging where durability and feel are important. Polyester, specifically categorized as either spun polyester (fuzzy) or filament polyester (smooth), also embodies excellent weathering abilities and abrasion resistance (wet or dry). Technora, the highest strength aramid fiber, is ideal for low stretch running rigging such as halyards. It does not creep under normal loads, but is subject to fatigue if cycled over a small radius. The black version of Technora has superior resistance to UV degradation. Dyneema®, ideal for lightweight running rigging, is characterized by its very high strength, low stretch characteristics as well as its ability to repel water. Unfortunately, Dyneema® has a low melting point which makes it susceptible to friction and is also inclined to elongate or creep under sustained loads. Polypropylene is a lightweight, non-stretch fiber recognized for its ability to float. It is, however, highly susceptible to UV degradation and melts under high friction. Continual innovation of our extensive designs ensures we manufacture the appropriate products to support all of your marine applications. Single Braid: A flexible, supple construction that absorbs twist and resists kinking. Construction is ideal for mainsheets, furling lines and large dock lines. Used in Regatta Braid, Regatta Lite, Endura 12, V-12 and Mega Braid. Construction ideal for heavy marine applications where nylon, polyester or combination polyester/polypropylene lines range up to 4 circumference. Double Braid: A braided cover surrounds a braided core, producing a rope designed for strength, durability, shape and easy handling. Construction used in running rigging and dock lines, including Sta-Set, Endura Braid, T-900, V-100 and Double Braid dock linesup to 10 circumference. Parallel Core: A patented unidirectional fiber core with a braided cover, for a rope with lower stretch higher strength line than a double braid rope of equal size. Construction is ideal for halyards, sheets and guys, specifically Sta-Set X, Sta-Set X Plus, and Sta-Set X Lite. 3 Strand: Four-stage, balanced construction leveraged with an advanced stabilization process produces a durable, long lasting and flexible rope that wont harden with age. 3-strand rope is ideal for applications where grip, abrasion resistance and stretch are critical factors. Construction is ideal for anchor, dock, mooring and tow lines up to 1 1/8 as well as running rigging on traditional cruising boats.