Clip
Size
1 2 3 4 5 6 7 8 Min.
no. of
clips
Amou
nt of
rope
to
turn
back
Torqu
e in
lb/ft
Weig
ht lb/
100
1/8 .47 .94 .44 .72 .41 .22 .38 .81 2 3-1/4 4.5 5
3/16 .59 1.16 .56 .97 .50 .25 .44 .94 2 3-3/4 7.5 9
1/4 .75 1.44 .50 1.03 .66 .31 .56 1.19 2 4-3/4 15 18
5/16 .88 1.69 .75 1.38 .72 .38 .69 1.31 2 5-1/4 30 30
3/8 1.00 1.94 .75 1.50 .91 .44 .75 1.63 2 6-1/2 45 42
7/16 1.19 2.28 1.00 1.88 1.03 .50 .88 1.81 2 7 65 70
1/2 1.19 2.28 1.00 1.88 1.13 .50 .88 1.91 3 11-1/
2
65 75
9/16 1.31 2.50 1.25 2.25 1.22 .56 .94 2.06 3 12 95 100
5/8 1.31 2.50 1.25 2.38 1.34 .56 .94 2.06 3 12 95 100
3/4 1.50 2.84 1.44 2.75 1.41 .63 1.06 2.25 4 18 130 150
7/8 1.75 3.16 1.63 3.13 1.59 .75 1.25 2.44 4 19 225 240
1 1.88 3.47 1.81 3.50 1.78 .75 1.25 2.63 5 26 225 250
1-1/8 2.00 3.59 2.00 3.88 1.91 .75 1.25 2.81 6 34 225 310
1-1/4 2.31 4.13 2.13 4.25 2.19 .88 1.44 3.13 6 37 360 460
1-3/8 2.38 4.19 2.31 4.63 2.31 .88 1.44 3.13 7 44 360 520
1-1/2 2.59 4.44 2.38 4.94 2.53 .88 1.44 3.41 7 48 360 590
1-5/8 2.75 4.75 2.63 5.31 2.66 1.00 1.63 3.63 7 51 430 730
RT500
Applicable Standards / Regulations
306 REVISED: