Chassis Specification - Yamaha SR 500 Service Manual

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Chassis Specification
Items
(S), (D). (N), (SW)
(Hl,
(1),
(A), (G)
(El, (8).
(F)
(OA)
Frame:
Frame design
Tubular steel semi-double-cradle
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~
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·-
-
Steerlng system
:
Caster
27.5° (62.5°)
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Trail
117 mm (4.6 in)
~
...
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Number and si:ze of balls in steering
head:
Upper race
22 pcs., 3/16
in
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Lower
race
29
pcs.,
1/4
in
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Lock
to
lock
angle
L.R.
41
.5°
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· - ·
Front suspension:
Type
Telescopic fork
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Front fork r.ushion travel
150 mm (5.9 in)
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~
...
Front
fork spring
:
Free
length
445 mm (17 .52
in)
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Se·~
length
417 mm (16.42
in)
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Wire
dia.
x winding dia.
3.6 x 24.3 mm (0.14 x 0.96
in)
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Spring constant
K
1
=
0.4
kg/mm (0- 100 mm)
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(22.4 lb/in (0- 3.94 in))
K2
=
0.504 kg/mm (100- 150 mm)
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(28.2
lb/in (3.94-
5.91 in))
lnner tube outside diameter
35 mm ( 1.38 in)
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Oil seal type
SD -35-48-10.5
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Front fork oil
:
Ouantity
182 cm
3
(6.15 o:z)
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Type
SAE 20W/40 type "SE" motor oil
....
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Rear suspension:
Type
Swing arm
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+-
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Damper type
Coil sprlng, oil damper
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Rear shock absorber traver
80 mm (3.15 in)
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Rear wheel traver
110 mm (4.33 in)
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Rear shock absorber spring:
Free length
216.5 mm (8.52 in)
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Set
length
(soft position)
198 mm (7.80
in)
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Wire dia. x winding dia.
7.5 x 61 mm (0.30 x 2.40 in)
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Spring constant
K,
=
1.8 kg/mm (0-
50
mm)
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+-
+-
( 100.8 lb/in (0- 1.97
inll
K
2
=
2.1 kg/mm (5(}--- 80 mm)
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+-
+-
(117.61b/in (1.97- 3.15 in))
Swing arm free play (limit)
1 mm (0.039 in)
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~
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