Polydyne0 pages

POLYDYNE..

Polydyne is a double braided rope which

utilizes a polyester sleeve over a nylon core.

Despite the dissimilar stretch characteristics

of these fibers, Yale engineers have produced

constructions where both fibers contribute.

The resulting rope has high breaking strength

and more stretch in its working load range,

which in many applications is a plus.

Polydyne is up to taking more dynamic abuse

without being degraded prematurely. Take

special note of the working energy absorption

rating which is the amount of energy a rope

absorbs before reaching its working load. The

ultimate energy absorption of this rope is also

correspondingly high. All this and a tough

polyester jacket make this a long wearing rope

with extraordinary dynamic capabilities.

Diameter

Inches (mm)

1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

7/8

1

1-1/8

M/4

1-5/16

1-1/2

(6.0)

(8.0)

(9.0)

(11.0)

(12.0)

(14.0)

(16.0)

(18.0)

(22.0)

(24.0)

(27.0)

(30.0)

(32.0)

(36.0)

Average Spliced

Break Strength*

Lbs Kg

2,500 1,135

3,800 1,725

5,000 2,270

7,500 3,405

11,000 4,990

15,000 6,810

18,900 8,580

26,000 11,800

33,600 15,250

42,000 19,065

52,000 23,605

65,000 29,510

77,000 34,955

90,000 40,860

Minimum Spliced

Break Strength*

Lbs Kg

2,250 1,020

3,420 1,550

4,500 2,040

6,750 3,060

9,900 4,490

13,500 6,125

17,010 7,720

23,400 10,620

30,240 13,725

37,800 17,160

46,800 21,245

58,500 26,555

69,300 31,460

81,000 36,770

Maximum**

Work Load 5:1

Weight

Lbs/ Kg/

Lbs

500

760

1,000

1,500

2,200

3,000

3,780

5,200

6,720

8,400

10,400

13,000

15,400

18,000

Kg

225

345

450

680

995

1,360

1,715

2,360

3,050

3,810

4,720

5,900

6,990

8,170

100ft

1.9

2.8

4.4

5.8

7.6

9.7

13.3

16.8

23.5

32.7

41.5

50.8

55.0

66.0

100m

2.8

4.2

6.6

8.6

11.3

14.4

19.8

25.0

35.0

48.7

61.8

75.6

81.9

98.3

* Knots and abrupt bends significantly reduce the strength of all ropes and lowers maximum working load.

** Working load is based on static or moderately dynamic lifting/pulling operations. Instantaneous changes in

load up or down, in excess of 10 percent of the rope's rated working load constitutes hazardous shock load and

would void normal working load recommendation. Consult Yale Cordage for guidelines for working loads

and safe use of rope.

% of elastic elongation

Specific Gravity: 1.24

Maximum Working Load

Minimum Break Strength

Average Break Strength

Energy Absorption

The colored area under the

curve represents the rope's

ability to do "work" and is

expressed in foot-pounds per

pound of rope in tension.

■ Green working 576 ft. lbs./lb.

■ Red ultimate 11,187 ft. Ibs./lb.

Dielectric Strength: The

maximum allowable leakage

for clean, dry Polydyne is 500

Micro Amperes when tested

at 90KV per ASTM 1701-05

"Routine Production Test".

Absorbed and entrained

moisture or impurities will

increase ropes conductivity

dramatically.

Splice using Yale's splicing

technique document

#10017200 (all sizes).