the difference by the breaking strength before cycling and multiplying the resulting number by 100 the yarns of this invention are especially adapted for fabrication into ropes of unusually high strength by well known commercial processes ropes are prepared from such yarns by a multistage process the steps of which may vary somewhat depending on the type of rope desired for testing purposes the ropes are prepared as follows the rope has a diameter of about 0 5 inch 1 3 cm and comprises a braided core with a braided cover parallay u00ae braid of samson the core is made of 1260 denier 6 ply 2 ends per carrier 20 strand braider at 4 557 ppi picks per inch 3 072 pounds 100 feet target the cover is made of 1260 denier 12 ply 2 ends per carrier 8 strands by 2 24 ends total at 1 678 ppi 3 421 pounds 100 feet target for testing the rope is passed at an angle of 10 u00b0 and under 1700 pound load over a curved bar and cycled 18 inch 46 cm span until the braid breaks under both wet and dry conditions results are reported in cycles to break the.