Operating instructions NJ1 & FREAK Compact bike
14
Figure 13: Switching using the thumb / index finger
switching fittings
Operation of the chain shift is also possible
using a
grip shift
(optional). Here, you can
change between the 3-speed chain wheels by
turning the left-hand twist grip. On the right-
hand grip, you can change between the
sprockets in the 9-speed cassette.
There is no display for the gear selected
available. You can only read-off which chain
wheel / sprocket is currently being used on the
twist grips.
Figure 14: Shifting using the twist grip
When driving up a hill, it should be noted
that it is only possible to change using the 9-
speed cassette under heavy loads on the
chain. Changing using the top three chain
wheels is no longer possible if there is heavy
tension on the chain. It is therefore important to
switch to a smaller chain wheel as a
precaution.
Try to avoid selecting cross gears, as the
efficiency and service life of the chain will fall
significantly (more information can be found in
chapter 32).
For more information, please see the
instructions provided by the gear manufacturer.
16.3.2 Hub
gears
The hub drive can be changed while driving
and also when stationary. No crank movement
is needed to change or only a small reduction
in torque is needed while driving.
The
Rohloff
hub drive and
Shimano Nexus
hub drives are operated by
turning the grip
shift
. The gear selected is shown in the
display on the control panel.
Figure 15: Shifting using the grip shift on the Rohloff
Speedhub 500/14 - 14-speed hub drive
Figure 16: Shifting using the grip shift for the
Shimano Nexus Inter8 hub drive
right: operation
9-speed cassette
Thumb:
lower gear
Index finger:
higher gear
left: operation
3-speed chain wheels
Thumb:
higher gear
Index finger:
lower gear
Display of the
chain
wheels /
sprocket
Gear changes
by twisting
the grip to the
left and right
Gear display
Gear changes
by twisting
the grip to the
left and right
Gear
display
Gear changes
by twisting
the grip to the
left and right
