Gear Shift Assistant - BMW M 1000 RR 2021 Rider's Manual

158 ENGINEERING DETAILS
Control steadily ramps engine
torque back to the rider's
requested level.
The function of the
Dynamic Brake Control is
switched off at the same time
as the ABS is switched off.

GEAR SHIFT ASSISTANT

Shift assistant Pro
Your vehicle is equipped with a
shift assistant, a system origin-
ally developed for racing and
now adapted for riding on pub-
lic roads. It permits upshifts
and downshifts without de-
clutching or closing the throttle
in virtually all load and rpm
ranges.
Advantages
70-80 % of all gearshifts on
a trip can be done without
using the clutch.
Less relative movement
between rider and passenger
because the shift pauses are
shorter.
It is not necessary to close the
throttle valve when shifting
under acceleration.
When braking and downshift-
ing (throttle valve closed),
engine speed is adjusted by
blipping the throttle.
Shift time is shorter than a
gearshift with clutch actu-
ation.
In order for the system
to identify a request for a
gearshift, the rider has to move
the shift lever from its idle
position in the desired direction
against the force of the spring
through a certain "overtravel"
at ordinary speed or rapidly
and keep the shift lever in this
position until the gearshift is
completed. It is not necessary
to increase the force applied to
the shift lever while shifting is
in progress. Once the gearshift
has completed the shift lever
has to be fully released before
another gearshift with the
Pro shift assistant can take
place. Constantly maintain the
corresponding load condition
(throttle grip position) before
and during gear shifts using
the Gear Shift Assistant Pro.
A change in the position of
the throttle twistgrip during
a gearshift can cause the
function to abort and/or lead
to a missed shift. The shift
assistant Pro provides no
assistance for the gear change
if the rider declutches.