Speed Factors (fs) For Cast and Combination Chain

Number of Teeth on Sprocket FEET PER MINUTE
10 25 50 75 100 125 150 175 200 225 250 275 300 350 400 450 500
6 1.05 1.25 1.57 1.92 2.28 2.75 3.31 4.08 5.03 6.45 8.40 12.0 18.9        
7 .971 1.10 1.29 1.46 1.64 1.84 2.07 2.34 2.62 2.98 3.39 3.92 4.52 6.32 9.92 19.2  
8 .935 1.04 1.19 1.32 1.44 1.57 1.17 1.86 2.02 2.20 2.40 2.62 2.85 3.43 4.15 5.26 7.10
9 .909 .990 1.12 1.23 1.34 1.44 1.55 1.66 1.77 1.89 2.01 2.15 2.29 2.60 2.92 3.32 3.76
10 .885 .962 1.07 1.16 1.25 1.33 1.41 1.49 1.57 1.66 1.75 1.84 1.92 2.12 2.32 2.52 2.76
11 .870 .935 1.02 1.10 1.18 1.25 1.32 1.39 1.46 1.53 1.60 1.68 1.74 1.89 2.03 2.19 2.35
12 .847 .901 .990 1.06 1.13 1.20 1.26 1.32 1.38 1.45 1.51 1.56 1.62 1.74 1.86 1.99 2.11
14 .840 .885 .952 1.01 1.06 1.12 1.17 1.22 1.27 1.32 1.37 1.42 1.46 1.56 1.65 1.76 1.84
16 .830 .870 .926 .971 1.02 1.07 1.11 1.15 1.20 1.24 1.28 1.33 1.37 1.45 1.53 1.62 1.70
18 .824 .862 .909 .952 1.00 1.04 1.08 1.12 1.15 1.19 1.23 1.27 1.30 1.37 1.45 1.53 1.60
20 .820 .855 .901 .943 .980 1.02 1.05 1.09 1.12 1.16 1.19 1.23 1.26 1.33 1.39 1.47 1.53
24 .813 .840 .877 .909 .943 .971 1.00 1.03 1.06 1.09 1.12 1.16 1.19 1.25 1.31 1.38 1.44