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appendix 7

 GEAR TABLES from "TECHNICAL REGULATIONS GENERAL & FOR ROAD, TRACK & ROLLER RACING"

how to measure with two lines taped on flat surface, rolling bike

 

Metric Gear Tables 

Standard Sprint Rim with 18mm low profile tubular and standard 700cc rim with racing tyre slick H.P. Tyre
 

Sprocket Size
  12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
40 7.01 6.47 6.01 5.61 5.26 4.95 4.67 4.43 4.21 4.01 3.82 3.66 3.51 3.37 3.24
41 7.19 6.63 6.16 5.75 5.39 5.07 4.78 4.54 4.31 4.11 3.92 3.75 3.59 3.45 3.32
42 7.36 6.80 6.31 5.89 5.52 5.20 4.91 4.65 4.42 4.21 4.02 3.84 3.68 3.53 3.40
43 7.54 6.96 6.46 6.03 5.65 5.32 5.02 4.76 4.52 4.31 4.11 3.93 3.77 3.62 3.48
44 7.71 7.12 6.61 6.17 5.78 5.44 5.14 4.87 4.63 4.41 4.21 4.02 3.89 3.70 3.56
45 7.89 7.28 6.76 6.31 5.92 5.57 5.26 4.98 5.73 4.51 4.30 4.12 3.94 3.79 3.64
46 8.06 7.44 6.91 6.45 6.05 5.69 5.38 5.09 4.84 4.61 4.40 4.21 4.03 3.87 3.72
47 8.24 7.60 7.06 6.59 6.18 5.82 5.49 5.20 4.94 4.71 4.49 4.30 4.12 3.95 3.80
48 8.41 7.77 7.21 6.73 6.31 5.94 5.61 5.31 5.05 4.81 4.59 4.39 4.21 4.04 3.88
49 8.59 7.93 7.36 6.87 6.44 6.06 5.73 5.42 5.15 4.91 4.68 4.48 4.29 4.12 3.96
50 8.76 8.09 7.51 7.01 6.57 6.19 5.84 5.54 5.26 5.01 4.78 4.57 4.38 4.21 4.04
51 8.94 8.25 7.66 7.15 6.70 6.31 5.96 5.65 5.36 5.11 4.88 4.66 4.48 4.29 4.13
52 9.11 8.41 7.81 7.29 6.84 6.43 6.08 5.76 5.47 5.21 4.98 4.76 4.56 4.37 4.21
53 9.29 8.57 7.96 7.43 6.97 6.56 6.19 5.87 5.57 5.31 5.07 4.85 4.64 4.46 4.29
54 9.46 8.74 8.11 7.57 7.10 6.68 6.31 5.98 5.69 5.41 5.16 4.94 4.79 4.54 4.37
55 9.64 8.90 8.26 7.71 7.23 6.80 6.43 6.09 5.78 5.51 5.26 5.03 4.82 4.63 4.45
56 9.82 9.06 8.41 7.85 7.36 6.93 6.54 6.20 5.89 5.61 5.35 5.12 4.91 4.71 4.53
 
Standard Sprint Rim with normal road tubular Tyre
 

Sprocket Size
  12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
40 7.12 6.57 6.10 5.69 5.34 5.02 4.75 4.50 4.27 4.07 3.88 3.71 3.56 3.42 3.29
41 7.30 6.74 6.25 5.84 5.47 5.15 4.86 4.61 4.38 4.17 3.98 3.81 3.65 3.50 3.37
42 7.47 6.90 6.41 5.98 5.61 5.28 4.98 4.72 4.48 4.27 4.08 3.90 3.74 3.59 3.45
43 7.65 7.06 6.56 6.12 5.74 5.40 5.10 4.83 4.59 4.37 4.17 3.99 3.83 3.67 3.53
44 7.83 7.23 6.71 6.26 5.87 5.53 5.22 4.95 4.70 4.47 4.27 4.09 3.92 3.76 3.61
45 8.01 7.39 6.86 6.41 6.01 5.65 5.34 5.06 4.80 4.58 4.37 4.18 4.00 3.84 3.70
46 8.19 7.56 7.02 6.55 6.14 5.78 5.46 5.17 4.91 4.68 4.47 4.27 4.09 3.93 3.78
47 8.36 7.72 7.17 6.69 6.27 5.90 5.58 5.28 5.02 4.78 4.56 4.36 4.18 4.01 3.86
48 8.54 7.89 7.32 6.83 6.41 6.03 5.69 5.40 5.13 4.88 4.66 4.46 4.27 4.10 3.94
49 8.72 8.05 7.47 6.98 6.54 6.16 5.81 5.51 5.23 4.98 4.76 4.55 4.36 4.19 4.02
50 8.90 8.21 7.63 7.12 6.67 6.28 5.93 5.62 5.34 5.08 4.85 4.64 7.45 4.27 4.11
51 9.08 8.38 7.78 7.26 6.81 6.41 6.05 5.73 5.45 5.19 4.95 4.74 4.54 4.27 4.19
52 9.25 8.54 7.93 7.40 6.94 6.53 6.17 5.84 5.55 5.29 5.05 4.83 4.63 4.36 4.27
53 9.43 8.71 8.08 7.55 7.07 6.66 6.29 5.96 5.66 5.39 5.14 4.92 4.72 4.53 4.35
54 9.61 8.87 8.24 7.69 7.21 6.78 6.41 6.07 5.77 5.49 5.24 5.01 4.80 4.61 4.44
55 9.79 9.03 8.39 7.83 7.34 6.91 6.53 6.18 5.87 5.59 5.34 5.11 4.89 4.70 4.52
56 9.97 9.20 8.54 7.97 7.47 7.03 6.64 6.29 5.98 5.69 5.44 5.20 4.98 4.78 4.60
 
  650 Wheel Gear Matrix
 

Sprocket Size
  12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
36 5.94 5.48 5.09 4.75 4.45 4.19 3.96 3.75 3.56 3.39 3.24 3.10 2.97 2.85 2.74
37 6.10 5.63 5.23 4.88 4.58 4.31 4.07 3.85 3.66 3.49 3.33 3.18 3.05 2.93 2.82
38 6.27 5.79 5.37 5.01 4.70 4.42 4.18 3.96 3.76 3.58 3.42 3.27 3.13 3.01 2.89
39 6.43 5.94 5.51 5.15 4.82 4.54 4.29 4.06 3.86 3.68 3.51 3.36 3.22 3.09 2.97
40 6.60 6.09 5.66 5.28 4.95 4.66 4.40 4.17 3.96 3.77 3.60 3.44 3.30 3.17 3.05
41 6.76 6.24 5.80 5.41 5.07 4.77 4.51 4.27 4.06 3.86 3.69 3.53 3.38 3.25 3.12
42 6.93 6.40 5.94 5.54 5.20 4.89 4.62 4.38 4.16 3.96 3.78 3.61 3.46 3.33 3.20
43 7.09 6.55 6.08 5.67 5.32 5.01 4.73 4.48 4.26 4.05 3.87 3.70 3.55 3.40 3.27
44 7.26 6.70 6.22 5.81 5.44 5.12 4.84 4.58 4.35 4.15 3.96 3.79 3.63