## Line Stretch Comparison

Leave the force blank to display the line breaking strength for the lines and sizes listed as well as the published stretch at 10%, 20%, and 30% of breaking strength. Enter a force and the stretch at that force, using interpolated stretch values, will be displayed in percent. Enter line length in feet and the table will be line stretch in inches. You can enter the load force directly (leaving winch power blank) or put the effort on the winch handle (probably around 20 to 35 pounds) and the winch power ratio to let the program calculate the total force. The power ratio is the gear ratio times the ratio of the handle length to drum radius. Enter a safety factor (5 is typical) and all entries that exceed that safety factor will be in red. The line lenght with a winch is the length from the winch to the clew for example. For a multi-part system, it is the length between the blocks, not the total lenght of the line running through the blocks. The Jib Wind Load Calculator may be useful in estimating load numbers.

If your favorite line is not shown, contact me in the Forum and I will add it if strength and stretch data is published.

NOTE: Strength and Stretch data is from manufacturers data sheet. Some of these numbers are suspect so please double check anything presented here as there may be errors. It was recently pointed out that the data showing VPC has more stretch than StaSet is certainly not correct but that is what the data sheets show. .

 Force in pounds (use 20 to 50 for human power). Blank for strength table: Winch power ratio (if winch) Length (of system if multi part, not line) feet. Blank for %: Safety Factor (results will be red)

Strength (pounds), or stretch (% or inches)
 Size Load 7/64" 1/8" 3/16" 1/4" 5/16" 3/8" 7/16" 1/2" 9/16" 5/8" 3/4" @10% @20% @30% 7x19 wire 1,760 3,700 7,000 .16% .32% .48% AmSteel 7,400 10,500 15,500 18,000 27,500 34,000 40,700 0.48% 0.72% 0.94% AmSteel-Blue 1,600 2,500 5,400 8,600 13,700 19,600 23,900 34,000 40,500 52,800 64,400 0.46% 0.7% 0.96% Apex 1,500 3,000 5,200 6,200 7,000 8,000 1% 1.5% 1.8% Endura Braid 2,500 4,000 7,000 10,000 14,000 19,000 25,200 30,000 37,400 1.00% Flight Line 2,500 4,000 4,700 1.25% 1.4% 1.7% LS 1,200 1,900 2,300 3,700 4,900 7,000 11,000 1.8% 2.6% 3.3% Lightning_Rope 1,400 2,100 5,400 7,900 13,500 18,500 20,600 32,000 41,600 50,600 0.59% 0.68% 0.77% LiteSpeed 4,100 6,200 9,300 0.39% 0.49% 0.77% MLX (updated) 1,700 3,400 6,900 8,700 12,200 14,000 0.70% 0.90% 1.10% Progen II 5,500 8,000 11,000 17,500 24,000 30,000 36,500 46,000 68,000 0.5% 0.74% 1% Regatta Braid 2,500 3,400 4,500 5,900 7,500 11,000 1.5% 3% 4.5% Regatta Lite 1,050 2,560 3,200 2.5% 5.0% 6.5% Samson MLX 1,800 3,800 4,500 7,200 9,500 15,000 0.7% 1.1% 1.4% Sta-Set 1,200 2,000 3,000 4,400 6,600 8,500 11,700 14,400 20,000 1% 2% 3.5% Sta-Set X 1,600 2,700 4,400 5,500 7,400 9,600 0.75% 1.8% 2.8% T-900 4,400 7,293 10,000 14,278 16,984 20,078 30,162 37,500 0.53% 0.53% Tech_12 2,800 5,600 8,200 13,000 18,000 0.63% 0.96% 1.2% Tenex 1,800 3,200 4,700 5,800 9,000 11,800 15,000 17,100 22,400 1.4% 2.3% 3.0% Tenex TEC 3,200 4,700 6,100 9,500 13,100 18,800 24,800 1.4% 2.3% 3.0% Trophy 800 1,400 2,000 3,000 4,000 6,000 2.2% 3.1% 3.8% Ultra-Tech 2,300 4,800 7,800 10,000 14,800 20,000 0.63% 0.97% 1.24% Ultra_Lite 1,200 2,200 2,900 4,400 0.65% 1% 1.29% V-12 2,100 4,950 7,200 10,900 17,000 26,000 29,200 0.8% 1.5% 1.8% V-100 2,400 4,600 8,600 9,100 17,200 19,200 23,500 26,000 33,620 1.2% 1.5% 1.8% VPC 4,000 6,500 7,500 9,500 1.3% 1.9% 2.2% Validator_12 2,000 2,700 5,500 9,400 14,000 19,500 23,500 35,000 43,000 55,000 0.49% 0.78% 0.98% Validator_II 3,300 5,000 7,000 11,000 15,200 20,000 26,000 30,000 45,000 0.59% 0.78% 0.98% Validator_SKB 4,800 6,300 8,000 12,900 16,500 22,800 32,500 42,600 53,400 0.49% 0.72% 0.92% WarpSpeed 5,100 6,200 9,800 14,000 21,000 26,500 0.44% 0.62% 0.79% XLS 1,200 2,200 3,300 4,400 5,800 8,300 11,000 13,600 19,000 1.5% 2.2% 2.9% XLS_Extra 2,300 3,500 4,600 6,100 8,700 0.65% 1% 1.29%