Brake system with
BMW Motorrad ABS
OE
How does ABS work?
The amount of braking force that
can be transferred to the road
depends on factors hat include
the coefficient of friction of the
road surface. Loose stones, ice
and snow or a wet road all have
much lower coefficients of fric-
tion than a clean, dry asphalt sur-
face. The lower the coefficient
of friction, the longer the braking
distance.
If the rider increases braking
pressure to the extent that brak-
ing force exceeds the maxim-
um transferrable limit, the wheels
start to lock and the motorcycle
loses its directional stability; a fall
is imminent. Before this situation
can occur, ABS intervenes and
adapts braking pressure to the
maximum transferrable braking
force, so the wheels continue
to turn and directional stability
is maintained irrespective of the
condition of the road surface.
What are the effects of
surface irregularities?
Humps and surface irregularit-
ies can cause the wheels to lose
contact temporarily with the road
surface; if this happens the brak-
ing force that can be transmit-
ted 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 stability
is maintained when the wheels
regain contact with the road sur-
face. At this instant the BMW
Motorrad ABS must assume an
extremely low coefficient of fric-
tion, so that the wheels will con-
tinue to rotate under all imagin-
able circumstances, because this
is the precondition for ensuring
directional stability. As soon as
is registers the actual circum-
stances, the system reacts in-
stantly and adjusts braking force
accordingly to achieve optimum
braking.
Rear wheel lift
Under very severe and sudden
deceleration, however, under cer-
tain circumstances it is possible
that the BMW Motorrad ABS will
be unable to prevent the rear
wheel from lifting clear of the
ground.If this happens the out-
come can be a highsiding situ-
ation in which the motorcycle can
flip over.
Severe braking can cause
the rear wheel to lift off the
ground.
When you brake, bear in mind
that ABS control cannot be relied
on in all circumstances to prevent
the rear wheel from lifting clear of
the ground.
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Summary of Contents for F 800 GS -
Page 1: ...K72_800_Titel fm Seite 9 Montag 24 September 2007 3 14 15 Rider s Manual F 800 GS ...
Page 8: ......
Page 12: ...1 8 tions ...
Page 14: ...2 10 views ...
Page 16: ...2 12 views ...
Page 19: ...Underneath the trim panel 1 Battery 112 2 Air filter housing 110 2 15 views ...
Page 23: ...Headlight 1 Low beam headlight 2 High beam headlight 3 Side light 2 19 views ...
Page 24: ...2 20 views ...
Page 29: ...The possible warnings are listed on the next page 3 25 ators ...
Page 34: ...ABS warningsOE Mode of presentation 3 30 ators ...
Page 38: ...3 34 ators ...
Page 45: ...Average consumption Press and hold down button 1 Current consumption 4 41 ration ...
Page 52: ...Emergency off switch kill switch a Normal operating position Grip heatingOE 4 48 ration ...
Page 53: ...2 Heating off Press and hold down ABS but Activating ABS function 4 49 ration ...
Page 72: ...The motorcycle can topple Risk of damaging compon At the rear secure the straps 5 68 iding ...
Page 73: ...Engineering details Engineering details Brake system with BMW Motorrad ABSOE 70 6 69 etails ...
Page 81: ...Position luggage strap 2 as CaseOA Opening cases Press the ribbed part of rocker 7 77 sories ...
Page 83: ...Pull red release lever 4 up Installing case Pull red release lever 4 up 7 79 sories ...
Page 86: ...Pull red lever 4 Installing topcase Pull red lever 4 7 82 sories ...
Page 88: ...7 84 sories ...
Page 114: ...Hold the mudguard cover in Remove screws 1 Installing air filter 8 110 nance ...
Page 120: ...Install screws 1 on left and 8 116 nance ...