Honda CRF250R 2005, Руководство пользователя

Страница: 131 / 164

(4) standard position
for optional front
wheel 0 in (0 mm)
(5) top of outer tube
(6) upper fork clamp
Chassis Adjustments
Adjustments for Competition
127
The following suggestions may improve a
specific concern. Subtle changes in overall
handling may also be noted.
Rear End
If you have a problem with rear wheel traction,
raise the rear end of your motorcycle by
increasing the rear spring pre-load. Instead of
running 3.9 in (100 mm) of sag, you can run 3.5
in (90 mm) so the rear of the bike will sit a little
higher. This should produce more traction
because of the change to the swingarm and the
location of your motorcycle’s center of gravity.
If you have a problem with the steering head
shaking when you use the front brake hard or if
your motorcycle wants to turn too quickly, lower
the rear of the motorcycle by reducing the rear
spring pre-load. This will increase fork rake and
trail and should improve stability in a straight
line. The effective suspension travel will be
transferred toward the firmer end of wheel travel.
Keep the race sag adjustment (page 109) in the
3.5 - 3.9 in (90 – 100 mm) range.
Fork Height/Angle
The position of the fork tubes in the clamps is
not adjustable. Align the groove in the outer tube
with the top surface of the upper fork clamp.
If you install the optional 20 inch wheel, align
the top of the fork tube with the top of the upper
fork clamp.
Standard Position
The standard position (1) aligns the index groove
(2) with the top of the upper clamp (3).
Standard Position For Optional Front Wheel
If you install the optional 20 inch wheel, align
the top of the fork tube (5) (not the top of the
fork cap) with the top of the upper fork clamp
(6).
Wheelbase
Adjusting your CRF’s wheelbase can offer subtle
changes in overall handling. You may adjust
wheelbase by adding or removing links on the
drive chain. If you change the wheelbase, be
sure to re-check race sag and adjust, if necessary.
In the past, a general rule was lengthen the
wheelbase to add straight line stability, shorten
the wheelbase to improve turning. However, we
suggest you do not lengthen the wheelbase of
your CRF unless you are racing on a track with
more fast sections than normal.
As a general recommendation, keep the
wheelbase as short as possible. This positions
the wheels closer together, improves turning
response, increase weighting (traction) on the
rear wheel, and lightens weighting on the front
wheel.
With your CRF, you will probably find that the
standard setting or a shorter wheelbase will offer
more overall benefits.
(1)
(2)
(3)
(4)
(5)
(6)
(1) standard position
0.3 in (7 mm)
(2) groove
(3) upper fork clamp