DISC #21 2008
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Track bike gear chart
A table listing gear inches against chainrings and sprockets for 700c road/track bikes
|
Ring
|
||||||||||||||||
| S P R O C K E T |
34
|
36
|
38
|
39
|
40
|
42
|
44
|
46
|
47
|
48
|
49
|
50
|
51
|
52
|
53
|
|
|
11
|
83.4
|
88.4
|
93.3
|
95.7
|
98.2
|
103.1
|
108.0
|
112.9
|
115.4 |
117.8
|
120.2 |
122.7
|
125.9 |
127.6
|
130.1
|
|
|
12
|
76.5
|
81.0
|
85.5
|
87.7
|
90.0
|
94.5
|
99.0
|
103.5
|
105.8 |
108.0
|
110.3 |
112.5
|
114.8 |
117.0
|
119.2
|
|
|
13
|
70.6
|
74.8
|
78.9
|
81.0
|
83.1
|
87.2
|
91.4
|
95.5
|
97.6 |
99.7
|
101.8 |
103.8
|
105.9 |
108.0
|
110.1
|
|
|
14
|
65.6
|
69.4
|
73.3
|
75.2
|
77.1
|
81.0
|
84.9
|
88.7
|
90.6 |
92.6
|
94.5 |
96.4
|
98.4 |
100.3
|
102.2
|
|
|
15
|
61.2
|
64.8
|
68.4
|
70.2
|
72.0
|
75.6
|
79.2
|
82.8
|
84.6 |
86.4
|
88.2 |
90.0
|
91.8 |
93.6
|
95.4
|
|
|
16
|
57.4
|
60.7
|
64.1
|
65.8
|
67.5
|
70.9
|
74.2
|
77.6
|
79.3 |
81.0
|
82.7 |
84.4
|
86.1 |
87.7
|
89.4
|
|
|
17
|
54.0
|
57.2
|
60.3
|
61.9
|
63.5
|
66.7
|
69.9
|
73.1
|
74.6 |
76.2
|
77.8 |
79.4
|
81.0 |
82.6
|
84.2
|
|
|
18
|
51.0
|
54.0
|
57.0
|
58.5
|
60.0
|
63.1
|
66.0
|
69.0
|
70.5 |
72.0
|
73.5 |
75.0
|
76.5 |
78.0
|
79.5
|
|
|
19
|
48.3
|
51.2
|
54.0
|
55.4
|
56.8
|
59.7
|
62.5
|
65.4
|
66.8 |
68.2
|
69.6 |
71.0
|
72.5 |
73.9
|
75.3
|
|
|
20
|
45.9
|
48.6
|
51.3
|
52.6
|
54.0
|
56.7
|
59.4
|
62.1
|
63.5 |
64.8
|
66.2 |
67.5
|
68.9 |
70.2
|
71.5
|
|
|
21
|
43.7
|
46.3
|
48.9
|
50.1
|
51.4
|
54.0
|
56.6
|
59.1
|
60.4 |
61.7
|
64.3
|
66.9
|
68.1
|
|||
|
22
|
41.7
|
44.2
|
46.6
|
47.9
|
49.1
|
51.5
|
54.0
|
56.4
|
57.6 |
58.9
|
61.4
|
63.8
|
65.0
|
|||
|
23
|
39.9
|
42.3
|
44.6
|
45.8
|
47.0
|
49.3
|
51.6
|
54.0
|
56.1 |
56.3
|
58.7
|
61.0
|
62.2
|
|||
|
24
|
38.2
|
40.5
|
42.7
|
43.9
|
45.0
|
47.2
|
49.5
|
51.7
|
52.9 |
54.0
|
56.2
|
58.5
|
59.6
|
|||
|
25
|
36.7
|
38.9
|
41.0
|
42.1
|
43.2
|
45.4
|
47.5
|
49.7
|
50.8 |
51.8
|
54.0
|
56.2
|
57.2
|
|||
|
26
|
35.3
|
37.4
|
39.5
|
40.5
|
41.5
|
43.6
|
45.7
|
47.8
|
48.8 |
49.8
|
51.9
|
54.0
|
55.0
|
|||
|
27
|
34.0
|
36.0
|
38.0
|
39.0
|
40.0
|
42.0
|
44.0
|
46.0
|
47.0 |
48.0
|
50.0
|
52.0
|
53.0
|
|||
|
28
|
32.8
|
34.7
|
36.6
|
37.6
|
38.6
|
40.5
|
42.4
|
44.4
|
45.4 |
46.3
|
48.2
|
50.1
|
51.1
|
|||
|
30
|
30.6
|
32.4
|
34.2
|
35.1
|
36.0
|
37.8
|
39.6
|
41.4
|
42.3 |
43.2
|
45.0
|
46.8
|
47.7
|
|||
|
32
|
28.7
|
30.4
|
32.1
|
32.9
|
33.8
|
35.4
|
37.1
|
38.8
|
39.6 |
40.5
|
42.2
|
43.9
|
44.7
|
|||
Shane 'The Llama' Miller - State Champion