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Track bike gear chart

by Carl Brewer last modified 2013-06-23 07:53

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
54
55
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
132.5
135.0
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
121.5
123.7
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
112.2
114.2
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
104.1
106.1
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
97.2
99.0
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
91.1
92.8
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

 

For reference, a Shimano 12:27 10 speed cassette has the following sprockets :

12,13,14,15,16,17,19,21,24,27

 

A good reference for cassettes is over on Sheldon Brown's website

.  RIP Sheldon.

 


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