21
T
40.0 40.5 41.0 41.5 42.0 42.5 43.0 43.5 44.0 44.5 45.0 45.5 46.0 46.5 47.0 47.5 48.0 48.5 49.0 49.5 50.0 50.5 51.0 51.5 52.0 52.5 53.0 53.5 54.0
22
T
23
T
24
T
25
T
26
T
27
T
28
T
29
T
30
T
26.4
27.6
28.9
30.1
31.4
32.7
33.9
35.2
36.4
37.7
26.7
28.0
29.2
30.5
31.8
33.1
34.3
35.6
36.9
38.2
27.0
28.3
29.6
30.9
32.2
33.5
34.8
36.0
37.3
38.6
27.4
28.7
30.0
31.3
32.6
33.9
35.2
36.5
37.8
39.1
27.7
29.0
30.3
31.7
33.0
34.3
35.6
36.9
38.2
39.6
28.0
29.4
30.7
32.0
33.4
34.7
36.0
37.4
38.7
40.0
28.4
29.7
31.1
32.4
33.8
35.1
36.5
37.8
39.2
40.5
28.7
30.0
31.4
32.8
34.1
35.5
36.9
38.2
39.6
41.0
29.0
30.4
31.8
33.2
34.5
35.9
37.3
38.7
40.1
41.4
29.3
30.7
32.1
33.5
34.9
36.3
37.7
39.1
40.5
41.9
29.7
31.1
32.5
33.9
35.3
36.7
38.2
39.6
41.0
42.4
30.0
31.4
32.9
34.3
35.7
37.1
38.6
40.0
41.4
42.9
30.3
31.8
33.2
34.7
36.1
37.6
39.0
40.4
41.9
43.3
30.7
32.1
33.6
35.0
36.5
38.0
39.4
40.9
42.3
43.8
31.0
32.5
33.9
35.4
36.9
38.4
39.8
41.3
42.8
44.3
31.3
32.8
34.3
35.8
37.3
38.8
40.3
41.8
43.3
44.7
31.7
33.2
34.7
36.2
37.7
39.2
40.7
42.2
43.7
45.2
32.0
33.5
35.0
36.5
38.1
39.6
41.1
42.6
44.2
45.7
32.3
33.8
35.4
36.9
38.5
40.0
41.5
43.1
44.6
46.2
32.6
34.2
35.7
37.3
38.9
40.4
42.0
43.5
45.1
46.6
33.0
34.5
36.1
37.7
39.3
40.8
42.4
44.0
45.5
47.1
33.3
34.9
36.5
38.1
39.6
41.2
42.8
44.4
46.0
47.6
33.6
35.2
36.8
38.4
40.0
41.6
43.2
44.8
46.4
48.0
34.0
35.6
37.2
38.8
40.4
42.0
43.7
45.3
46.9
48.5
34.3
35.9
37.6
39.2
40.8
42.5
44.1
45.7
47.4
49.0
34.6
36.3
37.9
39.6
41.2
42.9
44.5
46.2
47.8
49.5
34.9
36.6
38.3
39.9
41.6
43.3
44.9
46.6
48.3
49.9
35.3
37.0
38.6
40.3
42.0
43.7
45.4
47.0
48.7
50.4
35.6
37.3
39.0
40.7
42.4
44.1
45.8
47.5
49.2
50.9
100T
スパーギヤ Spur Gear
リヤタイヤ径 The Diametor of Rear Tire
ピニオン
ギヤ
Pinion
Gear
21
T
40.0 40.5 41.0 41.5 42.0 42.5 43.0 43.5 44.0 44.5 45.0 45.5 46.0 46.5 47.0 47.5 48.0 48.5 49.0 49.5 50.0 50.5 51.0 51.5 52.0 52.5 53.0 53.5 54.0
22
T
23
T
24
T
25
T
26
T
27
T
28
T
29
T
30
T
26.9
28.2
29.5
30.8
32.0
33.3
34.6
35.9
37.2
38.4
27.3
28.5
29.8
31.1
32.4
33.7
35.0
36.3
37.6
38.9
27.6
28.9
30.2
31.5
32.8
34.2
35.5
36.8
38.1
39.4
27.9
29.3
30.6
31.9
33.2
34.6
35.9
37.2
38.6
39.9
28.3
29.6
31.0
32.3
33.6
35.0
36.3
37.7
39.0
40.4
28.6
30.0
31.3
32.7
34.0
35.4
36.8
38.1
39.5
40.9
28.9
30.3
31.7
33.1
34.4
35.8
37.2
38.6
40.0
41.3
29.3
30.7
32.1
33.5
34.8
36.2
37.6
39.0
40.4
41.8
29.6
31.0
32.4
33.8
35.2
36.7
38.1
39.5
40.9
42.3
29.9
31.4
32.8
34.2
35.6
37.1
38.5
39.9
41.3
42.8
30.3
31.7
33.2
34.6
36.0
37.5
38.9
40.4
41.8
43.3
30.6
32.1
33.5
35.0
36.4
37.9
39.4
40.8
42.3
43.7
31.0
32.4
33.9
35.4
36.8
38.3
39.8
41.3
42.7
44.2
31.3
32.8
34.3
35.8
37.2
38.7
40.2
41.7
43.2
44.7
31.6
33.1
34.6
36.1
37.6
39.2
40.7
42.2
43.7
45.2
32.0
33.5
35.0
36.5
38.0
39.6
41.1
42.6
44.1
45.7
32.3
33.8
35.4
36.9
38.4
40.0
41.5
43.1
44.6
46.1
32.6
34.2
35.7
37.3
38.8
40.4
42.0
43.5
45.1
46.6
33.0
34.5
36.1
37.7
39.3
40.8
42.4
44.0
45.5
47.1
33.3
34.9
36.5
38.1
39.7
41.2
42.8
44.4
46.0
47.6
33.6
35.2
36.8
38.4
40.1
41.7
43.3
44.9
46.5
48.1
34.0
35.6
37.2
38.8
40.5
42.1
43.7
45.3
46.9
48.5
34.3
35.9
37.6
39.2
40.9
42.5
44.1
45.8
47.4
49.0
34.7
36.3
38.0
39.6
41.3
42.9
44.6
46.2
47.9
49.5
35.0
36.7
38.3
40.0
41.7
43.3
45.0
46.7
48.3
50.0
35.3
37.0
38.7
40.4
42.1
43.7
45.4
47.1
48.8
50.5
35.7
37.4
39.1
40.8
42.5
44.2
45.9
47.5
49.2
50.9
36.0
37.7
39.4
41.1
42.9
44.6
46.3
48.0
49.7
51.4
36.3
38.1
39.8
41.5
43.3
45.0
46.7
48.4
50.2
51.9
98T
スパーギヤ Spur Gear
リヤタイヤ径 The Diametor of Rear Tire
ピニオン
ギヤ
Pinion
Gear
21
T
40.0 40.5 41.0 41.5 42.0 42.5 43.0 43.5 44.0 44.5 45.0 45.5 46.0 46.5 47.0 47.5 48.0 48.5 49.0 49.5 50.0 50.5 51.0 51.5 52.0 52.5 53.0 53.5 54.0
22
T
23
T
24
T
25
T
26
T
27
T
28
T
29
T
30
T
27.5
28.8
30.1
31.4
32.7
34.0
35.3
36.6
37.9
39.3
27.8
29.1
30.5
31.8
33.1
34.4
35.8
37.1
38.4
39.7
28.2
29.5
30.8
32.2
33.5
34.9
36.2
37.5
38.9
40.2
28.5
29.9
31.2
32.6
33.9
35.3
36.6
38.0
39.4
40.7
28.8
30.2
31.6
33.0
34.3
35.7
37.1
38.5
39.8
41.2
29.2
30.6
32.0
33.4
34.8
36.1
37.5
38.9
40.3
41.7
29.5
30.9
32.3
33.8
35.2
36.6
38.0
39.4
40.8
42.2
29.9
31.3
32.7
34.1
35.6
37.0
38.4
39.8
41.3
42.7
30.2
31.7
33.1
34.5
36.0
37.4
38.9
40.3
41.7
43.2
30.6
32.0
33.5
34.9
36.4
37.8
39.3
40.8
42.2
43.7
30.9
32.4
33.9
35.3
36.8
38.3
39.7
41.2
42.7
44.2
31.3
32.7
34.2
35.7
37.2
38.7
40.2
41.7
43.2
44.6
31.6
33.1
34.6
36.1
37.6
39.1
40.6
42.1
43.6
45.1
31.9
33.5
35.0
36.5
38.0
39.5
41.1
42.6
44.1
45.6
32.3
33.8
35.4
36.9
38.4
40.0
41.5
43.0
44.6
46.1
32.6
34.2
35.7
37.3
38.8
40.4
41.9
43.5
45.1
46.6
33.0
34.5
36.1
37.7
39.3
40.8
42.4
44.0
45.5
47.1
33.3
34.9
36.5
38.1
39.7
41.2
42.8
44.4
46.0
47.6
33.7
35.3
36.9
38.5
40.1
41.7
43.3
44.9
46.5
48.1
34.0
35.6
37.2
38.9
40.5
42.1
43.7
45.3
47.0
48.6
34.3
36.0
37.6
39.3
40.9
42.5
44.2
45.8
47.4
49.1
34.7
36.3
38.0
39.6
41.3
42.9
44.6
46.2
47.9
49.6
35.0
36.7
38.4
40.0
41.7
43.4
45.0
46.7
48.4
50.0
35.4
37.1
38.7
40.4
42.1
43.8
45.5
47.2
48.8
50.5
35.7
37.4
39.1
40.8
42.5
44.2
45.9
47.6
49.3
51.0
36.1
37.8
39.5
41.2
42.9
44.6
46.4
48.1
49.8
51.5
36.4
38.1
39.9
41.6
43.3
45.1
46.8
48.5
50.3
52.0
36.7
38.5
40.2
42.0
43.7
45.5
47.2
49.0
50.7
52.5
37.1
38.9
40.6
42.4
44.2
45.9
47.7
49.5
51.2
53.0
96T
スパーギヤ Spur Gear
リヤタイヤ径 The Diametor of Rear Tire
ピニオン
ギヤ
Pinion
Gear
21
T
40.0 40.5 41.0 41.5 42.0 42.5 43.0 43.5 44.0 44.5 45.0 45.5 46.0 46.5 47.0 47.5 48.0 48.5 49.0 49.5 50.0 50.5 51.0 51.5 52.0 52.5 53.0 53.5 54.0
22
T
23
T
24
T
25
T
26
T
27
T
28
T
29
T
30
T
27.5
28.8
30.1
31.4
32.7
34.0
35.3
36.6
37.9
39.3
27.8
29.1
30.5
31.8
33.1
34.4
35.8
37.1
38.4
39.7
28.2
29.5
30.8
32.2
33.5
34.9
36.2
37.5
38.9
40.2
28.5
29.9
31.2
32.6
33.9
35.3
36.6
38.0
39.4
40.7
28.8
30.2
31.6
33.0
34.3
35.7
37.1
38.5
39.8
41.2
29.2
30.6
32.0
33.4
34.8
36.1
37.5
38.9
40.3
41.7
30.2
31.6
33.0
34.5
35.9
37.3
38.8
40.2
41.7
43.1
30.5
32.0
33.4
34.9
36.3
37.8
39.2
40.7
42.1
43.6
30.9
32.3
33.8
35.3
36.7
38.2
39.7
41.2
42.6
44.1
31.2
32.7
34.2
35.7
37.2
38.6
40.1
41.6
43.1
44.6
31.6
33.1
34.6
36.1
37.6
39.1
40.6
42.1
43.6
45.1
31.9
33.4
35.0
36.5
38.0
39.5
41.0
42.6
44.1
45.6
32.3
33.8
35.3
36.9
38.4
40.0
41.5
43
44.6
46.1
32.6
34.2
35.7
37.3
38.8
40.4
41.9
43.5
45.0
46.6
33.0
34.5
36.1
37.7
39.3
40.8
42.4
44.0
45.5
47.1
33.3
34.9
36.5
38.1
39.7
41.3
42.8
44.4
46.0
47.6
33.7
35.3
36.9
38.5
40.1
41.7
43.3
44.9
46.5
48.1
34.0
35.6
37.3
38.9
40.5
42.1
43.7
45.4
47.0
48.6
34.4
36.0
37.6
39.3
40.9
42.6
44.2
45.8
47.5
49.1
34.7
36.4
38.0
39.7
41.3
43.0
44.6
46.3
48.0
49.6
35.1
36.7
38.4
40.1
41.8
43.4
45.1
46.8
48.4
50.1
35.4
37.1
38.8
40.5
42.2
43.9
45.5
47.2
48.9
50.6
35.8
37.5
39.2
40.9
42.6
44.3
46.0
47.7
49.4
51.1
36.1
37.8
39.6
41.3
43.0
44.7
46.4
48.2
49.9
51.6
36.5
38.2
40.0
41.7
43.4
45.2
46.9
48.6
50.4
52.1
36.8
38.6
40.3
42.1
43.8
45.6
47.4
49.1
50.9
52.6
37.2
38.9
40.7
42.5
44.3
46.0
47.8
49.6
51.3
53.1
37.5
39.3
41.1
42.9
44.7
46.5
48.3
50.0
51.8
53.6
37.9
39.7
41.5
43.3
45.1
46.9
48.7
50.5
52.3
54.1
94T
スパーギヤ Spur Gear
リヤタイヤ径 The Diametor of Rear Tire
ピニオン
ギヤ
Pinion
Gear
21
T
40.0 40.5 41.0 41.5 42.0 42.5 43.0 43.5 44.0 44.5 45.0 45.5 46.0 46.5 47.0 47.5 48.0 48.5 49.0 49.5 50.0 50.5 51.0 51.5 52.0 52.5 53.0 53.5 54.0
22
T
23
T
24
T
25
T
26
T
27
T
28
T
29
T
30
T
28.7
30.0
31.4
32.8
34.1
35.5
36.9
38.2
39.6
41.0
29.0
30.4
31.8
33.2
34.6
35.9
37.3
38.7
40.1
41.5
29.4
30.8
32.2
33.6
35.0
36.4
37.8
39.2
40.6
42.0
29.7
31.2
32.6
34.0
35.4
36.8
38.2
39.7
41.1
42.5
30.1
31.5
33.0
34.4
35.8
37.3
38.7
40.1
41.6
43.0
30.5
31.9
33.4
34.8
36.3
37.7
39.2
40.6
42.1
43.5
30.8
32.3
33.8
35.2
36.7
38.2
39.6
41.1
42.6
44.0
31.2
32.7
34.1
35.6
37.1
38.6
40.1
41.6
43.1
44.5
31.5
33.0
34.5
36.0
37.5
39.0
40.5
42.0
43.6
45.1
31.9
33.4
34.9
36.5
38
39.5
41.0
42.5
44.0
45.6
32.3
33.8
35.3
36.9
38.4
39.9
41.5
43.0
44.5
46.1
32.6
34.2
35.7
37.3
38.8
40.4
41.9
43.5
45.0
46.6
33.0
34.5
36.1
37.7
39.3
40.8
42.4
44.0
45.5
47.1
33.3
34.9
36.5
38.1
39.7
41.3
42.9
44.4
46.0
47.6
33.7
35.3
36.9
38.5
40.1
41.7
43.3
44.9
46.5
48.1
34.0
35.7
37.3
38.9
40.5
42.2
43.8
45.4
47.0
48.6
34.4
36.0
37.7
39.3
41.0
42.6
44.2
45.9
47.5
49.1
34.8
36.4
38.1
39.7
41.4
43.0
44.7
46.3
48.0
49.7
35.1
36.8
38.5
40.1
41.8
43.5
45.2
46.8
48.5
50.2
35.5
37.2
38.9
40.5
42.2
43.9
45.6
47.3
49.0
50.7
35.8
37.5
39.3
41.0
42.7
44.4
46.1
47.8
49.5
51.2
36.2
37.9
39.6
41.4
43.1
44.8
46.5
48.3
50.0
51.7
36.6
38.3
40.0
41.8
43.5
45.3
47.0
48.7
50.5
52.2
36.9
38.7
40.4
42.2
43.9
45.7
47.5
49.2
51.0
52.7
37.3
39.0
40.8
42.6
44.4
46.1
47.9
49.7
51.5
53.2
37.6
39.4
41.2
43.0
44.8
46.6
48.4
50.2
52.0
53.8
38.0
39.8
41.6
43.4
45.2
47.0
48.8
50.6
52.5
54.3
38.3
40.2
42.0
43.8
45.6
47.5
49.3
51.1
53.0
54.8
38.7
40.5
42.4
44.2
46.1
47.9
49.8
51.6
53.4
55.3
92T
スパーギヤ Spur Gear
リヤタイヤ径 The Diametor of Rear Tire
ピニオン
ギヤ
Pinion
Gear
21
T
40.0 40.5 41.0 41.5 42.0 42.5 43.0 43.5 44.0 44.5 45.0 45.5 46.0 46.5 47.0 47.5 48.0 48.5 49.0 49.5 50.0 50.5 51.0 51.5 52.0 52.5 53.0 53.5 54.0
22
T
23
T
24
T
25
T
26
T
27
T
28
T
29
T
30
T
29.3
30.7
32.1
33.5
34.9
36.3
37.7
39.1
40.5
41.9
29.7
31.1
32.5
33.9
35.3
36.7
38.2
39.6
41.0
42.4
30.0
31.5
32.9
34.3
35.8
37.2
38.6
40.1
41.5
42.9
30.4
31.9
33.3
34.7
36.2
37.6
39.1
40.5
42.0
43.4
30.8
32.2
33.7
35.2
36.6
38.1
39.6
41.0
42.5
44.0
31.1
32.6
34.1
35.6
37.1
38.6
40.0
41.5
43.0
44.5
31.5
33.0
34.5
36.0
37.5
39.0
40.5
42.0
43.5
45.0
31.9
33.4
34.9
36.4
37.9
39.5
41.0
42.5
44.0
45.5
32.2
33.8
35.3
36.8
38.4
39.9
41.4
43.0
44.5
46.1
32.6
34.2
35.7
37.3
38.8
40.4
41.9
43.5
45.0
46.6
33.0
34.5
36.1
37.7
39.3
40.8
42.4
44.0
45.5
47.1
33.3
34.9
36.5
38.1
39.7
41.3
42.9
44.4
46.0
47.6
33.7
35.3
36.9
38.5
40.1
41.7
43.3
44.9
46.5
48.1
34.1
35.7
37.3
38.9
40.6
42.2
43.8
45.4
47.0
48.7
34.4
36.1
37.7
39.4
41.0
42.6
44.3
45.9
47.6
49.2
34.8
36.5
38.1
39.8
41.4
43.1
44.7
46.4
48.1
49.7
35.2
36.8
38.5
40.2
41.9
43.5
45.2
46.9
48.6
50.2
35.5
37.2
38.9
40.6
42.3
44
45.7
47.4
49.1
50.8
35.9
37.6
39.3
41.0
42.7
44.4
46.2
47.9
49.6
51.3
36.3
38.0
39.7
41.4
43.2
44.9
46.6
48.4
50.1
51.8
36.6
38.4
40.1
41.9
43.6
45.4
47.1
48.8
50.6
52.3
37.0
38.8
40.5
42.3
44.0
45.8
47.6
49.3
51.1
52.9
37.4
39.1
40.9
42.7
44.5
46.3
48.0
49.8
51.6
53.4
37.7
39.5
41.3
43.1
44.9
46.7
48.5
50.3
52.1
53.9
38.1
39.9
41.7
43.5
45.4
47.2
49.0
50.8
52.6
54.4
38.5
40.3
42.1
44
45.8
47.6
49.5
51.3
53.1
55.0
38.8
40.7
42.5
44.4
46.2
48.1
49.9
51.8
53.6
55.5
39.2
41.1
42.9
44.8
46.7
48.5
50.4
52.3
54.1
56.0
39.6
41.4
43.3
45.2
47.1
49.0
50.9
52.8
54.6
56.5
90T
スパーギヤ Spur Gear
リヤタイヤ径 The Diametor of Rear Tire
ピニオン
ギヤ
Pinion
Gear
21
T
40.0 40.5 41.0 41.5 42.0 42.5 43.0 43.5 44.0 44.5 45.0 45.5 46.0 46.5 47.0 47.5 48.0 48.5 49.0 49.5 50.0 50.5 51.0 51.5 52.0 52.5 53.0 53.5 54.0
22
T
23
T
24
T
25
T
26
T
27
T
28
T
29
T
30
T
30.0
31.4
32.8
34.3
35.7
37.1
38.5
40.0
41.4
42.8
30.3
31.8
33.2
34.7
36.1
37.6
39.0
40.5
41.9
43.4
30.7
32.2
33.6
35.1
36.6
38.0
39.5
41.0
42.4
43.9
31.1
32.6
34.1
35.5
37.0
38.5
40.0
41.5
42.9
44.4
31.5
33.0
34.5
36.0
37.5
39.0
40.5
42.0
43.5
45.0
31.8
33.4
34.9
36.4
37.9
39.4
40.9
42.5
44.0
45.5
32.2
33.8
35.3
36.8
38.4
39.9
41.4
43.0
44.5
46.0
32.6
34.1
35.7
37.3
38.8
40.4
41.9
43.5
45.0
46.6
33.0
34.5
36.1
37.7
39.3
40.8
42.4
44.0
45.5
47.1
33.3
34.9
36.5
38.1
39.7
41.3
42.9
44.5
46.0
47.6
33.7
35.3
36.9
38.5
40.1
41.7
43.4
45.0
46.6
48.2
34.1
35.7
37.3
39.0
40.6
42.2
43.8
45.5
47.1
48.7
34.5
36.1
37.8
39.4
41.0
42.7
44.3
46.0
47.6
49.2
34.8
36.5
38.2
39.8
41.5
43.1
44.8
46.5
48.1
49.8
35.2
36.9
38.6
40.2
41.9
43.6
45.3
47.0
48.6
50.3
35.6
37.3
39.0
40.7
42.4
44.1
45.8
47.5
49.2
50.8
36.0
37.7
39.4
41.1
42.8
44.5
46.2
48.0
49.7
51.4
36.3
38.1
39.8
41.5
43.3
45.0
46.7
48.5
50.2
51.9
36.7
38.5
40.2
42
43.7
45.5
47.2
49.0
50.7
52.5
37.1
38.9
40.6
42.4
44.2
45.9
47.7
49.5
51.2
53.0
37.5
39.3
41.0
42.8
44.6
46.4
48.2
50.0
51.7
53.5
37.8
39.6
41.4
43.2
45.0
46.9
48.7
50.5
52.3
54.1
38.2
40.0
41.9
43.7
45.5
47.3
49.1
51.0
52.8
54.6
38.6
40.4
42.3
44.1
45.9
47.8
49.6
51.5
53.3
55.1
39.0
40.8
42.7
44.5
46.4
48.2
50.1
52.0
53.8
55.7
39.3
41.2
43.1
45.0
46.8
48.7
50.6
52.5
54.3
56.2
39.7
41.6
43.5
45.4
47.3
49.2
51.1
53.0
54.8
56.7
40.1
42.0
43.9
45.8
47.7
49.6
51.5
53.5
55.4
57.3
40.5
42.4
44.3
46.2
48.2
50.1
52.0
54.0
55.9
57.8
88T
スパーギヤ Spur Gear
リヤタイヤ径 The Diametor of Rear Tire
ピニオン
ギヤ
Pinion
Gear
1/12レーシングではセッティングでリヤタイヤ径を調節するので、ピニオンギヤとスパーギヤの枚数を決定する際、一般的な減速比ではなく、 指数 という言葉を使います。
ここでいう指数とはピニオンギヤが1回転した時に、
リヤタイヤが回転する、すなわち車が進む距離（mm)を示します。
減速比とは反対に、指数が大きくなればなるほど最高速重視に、小さくなればなるほど立ち上がり重視の特性になります。
まず最初は、35を基準にはじめてください。
指 数 表
2
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