BMW Motorrad F 900 XR, Rider'S Manual

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Gear Shift Assistant
with Gearshift Assistant Pro OE
Gear Shift Assistant Pro
Your motorcycle is equipped with
the Gear Shift Assistant Pro orig-
inally developed for racing but
now specially adapted for tour-
ing use. It allows you upshift
and downshift under almost any
load conditions and in virtually all
engine-speed ranges without op-
erating the clutch or accelerator.
Benefits
70-80 % of all gearshifts can
be performed without using the
clutch.
Less movement between pilot
and pillion due to shorter gear-
change intervals.
Throttle valve does not have to
be closed when changing gear
under acceleration.
During deceleration and down-
shifts (throttle plate closed) the
system blips the throttle valve
to obtain the correct engine
speed.
Shifting times are faster than
when the clutch is used to shift
gears.
For the system to detect the rid-
er's intention to change gear,
the gearshift lever previously
not operated must be moved
against the spring force by a cer-
tain amount of "overtravel" in the
desired direction with a normal
to brisk action and held in that
position until the gear change is
completed. A further increase of
the force applied to the gearshift
lever during the gear-shift op-
eration is not necessary. After
the gear change is completed,
the gearshift lever must be fully
released before the Gear Shift
Assistant Pro can execute a new
gear change. The load factor
(throttle grip position) should re-
main constant both prior to and
during execution of shifts using
the Gear Shift Assistant Pro.
Changing the accelerator twist-
grip position during the gear-
shift operation may cause the
function to abort and/or the gear
change to fail. The Gear Shift
Assistant Pro does not provide
support when gears are shifted
with clutch control.
Downshifts
Downshifts are assisted up to
the speed at which the engine
reaches maximum rpm in the
gear to be engaged. Over-
revving is thus prevented.
Maximum engine speed
max 9000 min
-1
8
140
z Technology in detail