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Gear Ratio Chart

Since birth
9 10 11 12 13 14 15 16
70 7.77 7.00 6.36 5.83 5.38 5.00 4.66 4.37
71 7.88 7.10 6.45 5.91 5.46 5.07 4.73 4.43
72 8.00 7.20 6.54 6.00 5.53 5.14 4.80 4.50
73 8.11 7.30 6.63 6.08 5.61 5.21 4.86 4.56
74 8.22 7.40 6.72 6.16 5.69 5.28 4.93 4.62
75 8.33 7.50 6.81 6.25 5.76 5.35 5.00 4.68
76 8.44 7.60 6.90 6.33 5.84 5.42 5.06 4.75
77 8.55 7.70 7.00 6.41 5.92 5.50 5.13 4.81
78 8.66 7.80 7.09 6.50 6.00 5.57 5.20 4.87
79 8.77 7.90 7.18 6.58 6.07 5.64 5.26 4.93
9 10 11 12 13 14 15 16
80 8.88 8.00 7.27 6.66 6.15 5.71 5.33 5.00
81 9.00 8.10 7.36 6.72 6.23 5.78 5.40 5.06
82 9.11 8.20 7.45 6.83 6.30 5.85 5.46 5.12
83 9.22 8.30 7.54 6.91 6.38 5.92 5.53 5.18
84 9.33 8.40 7.63 7.00 6.46 6.00 5.60 5.25
85 9.44 8.50 7.72 7.08 6.53 6.07 5.66 5.31
86 9.55 8.60 7.81 7.16 6.61 6.14 5.73 5.37
87 9.66 8.70 7.90 7.25 6.69 6.21 5.80 5.43
88 9.77 8.80 8.00 7.33 6.76 6.28 5.86 5.50
89 9.88 8.90 8.09 7.41 6.84 6.35 5.93 5.56
9 10 11 12 13 14 15 16
90 10.00 9.00 8.18 7.50 6.92 6.89 6.00 5.62
91 10.11 9.10 8.27 7.58 7.00 6.50 6.06 5.68
92 10.22 9.20 8.36 7.66 7.07 6.57 6.13 5.75
93 10.33 9.30 8.45 7.75 7.15 6.64 6.20 5.81
94 10.44 9.40 8.54 7.83 7.23 6.71 6.26 5.87
95 10.55 9.50 8.63 7.91 7.30 6.78 6.33 5.93