Adjustments for Competition
125
Rear Suspension Adjustments
Because of the great absorption quality of the
shock bumper rubber, it may be difficult for you
to notice when your CRF’s suspension is
bottoming. Some riders may think the damping
or perhaps the leverage ratio is too harsh. In
reality, the problem is most likely insufficient
spring pre-load or a spring that is too soft. Either
situation prevents utilizing the full travel.
Keep in mind that a properly adjusted suspension
system may bottom slightly every few minutes at
full speed. Adjusting the suspension to avoid this
occasional bottoming may cost more in overall
suspension performance than it is worth.
A spring that is too stiff for your weight will not
allow the rear tyre to hook up under acceleration
and will pass more bumps on to you.
6. Calculate the free sag dimension.
To do this, subtract the loaded without rider
dimension (step 5) from the unloaded
dimension (step 2).
Free sag indicates the distance your rear
suspension should sag from the weight of the
sprung portion of your CRF.
With the spring pre-load set to obtain the
proper race sag, the rear suspension should
sag 10 to 25 mm (0.4 to 1.0 in).
If the rear of your CRF sags less than 10 mm
(0.4 in) from its own weight, the spring is too
stiff for your weight. It is not compressed
enough, even though you have the proper race
sag adjustment. As a result, the rear
suspension will not extend as far as it should.
Spring Rates
If you are lighter or heavier than the average
rider and cannot set the proper ride height
without altering the correct spring pre-load,
consider an aftermarket shock absorber spring.
A spring that is too soft for your weight forces
you to add excessive spring pre-load to get the
right race sag and, as a result, the rear end of the
motorcycle is raised. This can cause the rear
wheel to unload too much in the air and top out
as travel rebounds. The rear end may top out
from light braking, or kick sideways over lips
and square-edged terrain. It may even top-out
when you dismount your CRF.
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Содержание CRF450X
Страница 3: ...Honda CRF450X OWNER S MANUAL COMPETITION HANDBOOK Contents qxd 06 6 1 10 56 ページ2 ...
Страница 12: ...6 Motorcycle Safety 001 030 qxd 06 6 1 10 57 ページ6 ...
Страница 18: ...12 Before Riding 001 030 qxd 06 6 1 10 57 ページ12 ...
Страница 28: ...22 Basic Operating Instructions 001 030 qxd 06 6 1 10 57 ページ22 ...
Страница 156: ...150 Taking Care of Unexpected 142 168 qxd 06 6 1 11 08 ページ150 ...
Страница 169: ...Technical Information 163 Wiring Diagram 142 168 qxd 06 6 1 11 08 ページ163 ...