Yamaha RST90GTY, Service Manual

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89
SPEC
MAINTENANCE SPECIFICATIONS
Spring rate
Compression 12.32 N/mm (1.26 kgf/mm, 70.35 lbf/in)
(RST90GT “Canada”)
13.45 N/mm (1.37 kgf/mm, 76.80 lbf/in)
(RST90GT “Europe”/RST90TF)
Torsion 11,876.0 N · mm/rad
(1,211.0 kgf · mm/rad, 67,810.8 lbf · in/rad)
(RST90GT “Canada”)
12,654.0 N · mm/rad
(1,290.3 kgf · mm/rad, 72,253.1 lbf · in/rad)
(RST90GT “Europe”/RST90TF)
Number of coils 5.53 (RST90GT “Canada”)
5.19 (RST90GT “Europe”/RST90TF)
Free length 75.0 mm (2.95 in)
Torque cam angle 41° (RST90GT “Canada”)
39° (RST90GT “Europe”/RST90TF)
Drive chain:
Type Silent chain enclosed in both
Model/Manufacturer 23RH303-70ASM/Borg Warner Automotive
(RST90GT “Canada”)
23RH303-68ASM/Borg Warner Automotive
(RST90GT “Europe”/RST90TF)
Number of links 70L (RST90GT “Canada”)
68L (RST90GT “Europe”/RST90TF)
Secondary reduction ratio 39/23 (1.70) (RST90GT “Canada”)
39/21 (1.86) (RST90TF “Canada”)
39/20 (1.95) (RST90GT “Europe”/RST90TF “Europe”)
Maximum 14 link drive chain section length 133.35 mm (5.25 in)
<Limit> 137.35 mm (5.41 in)
Track:
Part number 8ET-47110-20 (RST90GT)
8FM-47110-10 (RST90TF)
Width 381.0 mm (15.0 in)
Length 3,648 mm (143.64 in) (RST90GT)
3,840 mm (151.20 in) (RST90TF)
Pitch 64.0 mm (2.52 in)
Number of links 57 (RST90GT)
60 (RST90TF)
Thickness “A” 5.1 mm (0.20 in)
Height “B” 31.8 mm (1.25 in)
Track deflection at 100 N (10 kgf, 22 lbf) 20.0 ~ 25.0 mm (0.79 ~ 0.98 in)
Slide rail suspension (rear suspension):
Front travel 216.0 mm (8.50 in) (RST90GT)
213.0 mm (8.39 in) (RST90TF)
Rear travel 315.0 mm (12.40 in) (RST90GT)
351.0 mm (13.82 in) (RST90TF)
Item Description