98
ENGINEERING DETAILS
GENERAL INSTRUCTIONS
To find out more about engin-
eering go to:
bmw-motorrad.com/techno-
logy
ANTILOCK BRAKE SYSTEM
(ABS)
How does ABS work?
The amount of braking force
that can be transferred to the
road depends on factors that
include the coefficient of fric-
tion of the road surface. Loose
stones, ice and snow or a wet
road all have much lower coef-
ficients of friction than a clean
and dry asphalt surface. The
lower the coefficient of friction,
the longer the stopping dis-
tance.
If the rider increases the brake
pressure to the extent that the
brake force exceeds the max-
imum transferable limit, the
wheels start to lock and the
vehicle loses its directional sta-
bility; a fall is imminent. Before
this situation can occur, ABS
intervenes and adapts brak-
ing pressure to the maximum
transferable braking force. The
wheels continue to turn and the
driving stability is retained irre-
spective of the road condition.
What are the effects of
surface irregularities?
Surface irregularities can cause
the wheels to lose contact tem-
porarily with the road surface.
If this happens the braking
force that can be transmitted
to the road can drop to zero.
If the brakes are applied under
these circumstances the ABS
has to reduce braking force
to ensure that directional sta-
bility is maintained when the
wheels regain contact with the
road surface. At this instant the
ABS must assume an extremely
low coefficient of friction, so
that the wheels will continue
to rotate under all imaginable
circumstances, because this is
the precondition for ensuring
directional stability. As soon
as it registers the actual cir-
cumstances, the system reacts
instantly and adjusts braking
force accordingly to achieve
optimum braking.
Rear wheel lift
Under very severe and
sudden deceleration, how-
ever, it is possible that the
BMW Motorrad ABS will be un-
able to prevent the rear wheel
from lifting clear of the ground.
If this happens the outcome
can be a highsiding situation in
Содержание R nineT 2020
Страница 1: ...RIDER S MANUAL R nineT BMW MOTORRAD MAKE LIFE A RIDE...
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Страница 8: ...GENERAL IN STRUCTIONS 01...
Страница 18: ...GENERAL VIEWS 02...
Страница 26: ...STATUS INDICAT ORS 03...
Страница 27: ...INDICATOR AND WARNING LIGHTS 22 MULTIFUNCTION DISPLAYS 23 WARNING INDICATORS 24 SERVICE DUE INDICATOR 33...
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Страница 42: ...OPERATION 04...
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Страница 68: ...ADJUSTMENT 05...
Страница 69: ...MIRRORS 64 HEADLIGHT 65 CLUTCH 66 BRAKES 67 SPRING PRELOAD 68 DAMPING 70 FOOTREST SYSTEM 72...
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Страница 84: ...RIDING 06...
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Страница 102: ...ENGINEERING DETAILS 07...
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Страница 144: ...ACCESSORIES 09...
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Страница 162: ...TECHNICAL DATA 11...
Страница 175: ...169 PERFORMANCE FIGURES Top speed 200 km h...
Страница 176: ...SERVICE 12...
Страница 198: ...192 SERVICE Work performed Odometer reading Date...
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