Gear Selection - Yamaha RX10K Supplementary Service Manual

1 Chain and sprocket part number
Parts name
A
B
Drive sprocket
E
F Driven sprocket
Chain Chain
G
2 Gear ratio
Drive gear
A
B
Driven gear
38 teeth
39 teeth
40 teeth
3 Secondary sheave spring
Spring rate
B
(Torsion)
A
Part no.
NSmm / rad
(kgSmm / rad)
90508-500B1 6003 (613)
90508-536A9 7147 (729)
90508-556A2 8314 (848)
90508-556A7 9460 (965)
90508-60012 11876 (1211)
90508-60007 12654 (1290)
4 Secondary spring twist angle
A
Sheave
B
1
2
3
Teeth & links
C
20 teeth 8FA-17682-00
21 teeth 8FA-17682-10
22 teeth 8FA-17682-20
23 teeth 8FA-17682-30
24 teeth 8FA-17682-40
38 teeth 8FB-47587-80
39 teeth 8FB-47587-90
40 teeth 8FB-47587-00
68 links 94890-09068
70 links 94890-09070
20 teeth 21 teeth 22 teeth 23 teeth 24 teeth
1.90 1.81
68 links 68 links
1.95 1.86
68 links 68 links
1.91
70 links
Spring rate
C
(Compression)
D
Color
N / mm (kg / mm)
(lb / in)
6.2 (0.63), 35.28 Brown
7.3 (0.74), 41.44 Red
8.5 (0.87), 48.72 Green
10.21 (1.04), 58.24 Silver
12.32 (1.256), 70.34 Pink
13.45 (1.372) 76.84 White
Seat
0
10_
20_
30_

GEAR SELECTION

Parts no.
1.73 1.65
68 links 70 links
1.77 1.70
70 links 70 links
1.82 1.74
70 links 70 links
Wire Free
E F G
No. of
gauge length
coils
mm (in) mm (in)
5.0 (0.196) 5.19 75 (2.95)
5.3 (0.209) 5.53 75 (2.95)
5.5 (0.217) 5.53 75 (2.95)
5.5 (0.217) 4.86 75 (2.95)
6.0 (0.236) 5.53 75 (2.95)
6.0 (0.236) 5.19 75 (2.95)
3
40_
50_
60_
8
INSP
ADJ
Standard
D
RXW10J, RXW10SJ
RXW10J, RXW10SJ
RXW10J, RXW10SJ
1.58
70 links
1.63
70 links
1.67
70 links
Outside
H
diameter I
Standard
mm (in)
69.5 (2.736)
69.5 (2.736)
69.5 (2.736)
69.5 (2.736)
69.5 (2.736)
RXW10J,
69.5 (2.736)
RXW10SJ
6 9
70_ 100_
80_ 110_
90_ 120_