Asc - BMW F 800 GS Adventure Rider's Manual

take over and even BMW Motor-
rad ABS is unable to counteract
their effects. Invariably, the rider
bears responsibility for assessing
road and traffic conditions and
adopting his or her style of riding
accordingly.
Do not take risks that would neg-
ate the additional safety offered
by this system.
Electronic engine
management with BMW
Motorrad ASC
with Automatic Stability Control
OE

(ASC)

How does ASC work?
The BMW Motorrad ASC com-
pares the speed of rotation of the
front wheel and the rear wheel.
The differential is used to com-
pute slip as a measure of the
reserves of stability available at
the rear wheel. If slip exceeds a
certain limit the engine control in-
tervenes, adapting engine torque
accordingly.
What is the design
baseline for
BMW Motorrad ASC?
The BMW Motorrad ASC is de-
signed as an assistant system
for the rider during use on public
roads. The extent to which the
rider affects ASC control can be
considerable (weight shifts when
cornering, items of luggage loose
on the motorcycle), especially
when style of riding takes rider
and machine close to the limits
imposed by physics.
For offroad driving the riding
mode ENDURO should be ac-
tivated:. This mode delays ASC
intervention slightly in order to
permit controlled drifting.
The system is not optimised for
special requirements that apply
under extreme competitive situ-
ations off-road or on the race
course. The BMW Motorrad
ASC can be deactivated in these
cases.
Even ASC is constrained by
the laws of physics. Invari-
ably, the rider bears responsibil-
ity for assessing road and traffic
conditions and adopting his or
her style of riding accordingly.
Do not take risks that would neg-
ate the additional safety offered
by this system.
Special situations
In accordance with the laws of
physics, the accelerating ability
is restricted more and more as
the heel angle increases. Con-
sequently, there can be a per-
ceptible reduction in acceleration
out of very tight bends.
The speeds of the front and
rear wheels are compared as
one means of detecting the rear
wheel's incipient tendency to
6
67
z