Hub Gears - ProActiv NJ1 Operating Instructions Manual

Operating instructions NJ1 e-assistant
left: operation 3-
speed chain wheels
Thumb:
higher gear
Index finger:
lower gear
Figure 15: Switching using the thumb / index finger
switching fittings
Operation of the chain shift is also possible
using a twist grip (optional). Here, you can
change between the 3 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. You can read the respective
gears on the twist grip.
Gear changes
by twisting the
grip to the left
and right
Figure 16: Switching 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.
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 28).
right: operation
9-speed cassette
Thumb:
lower gear
Index finger:
higher gear
Gear display
For more information, please see the instruc-
tions provided by the gear manufacturer.

18.4.2 Hub gears

The hub gears integrated into the drive can be
changed while driving and also when station-
ary. No crank movement is needed to change
and only a small reduction in torque is needed.
Normally, the hub gears are operated by turn-
ing the twist grip. The gear selected is shown
in the display on the control panel.
Gear changes
by twisting
grip to the left
and right
Figure 17: Switching using the twist grip
It is also possible to operate the hub gears
using the operating machine which allows
gear changes to be made using the chin (op-
tional). To change up, the gear lever is turned
through 45° anti-clockwise (upwards). To
change down, the gear lever is turned through
45° clockwise (downwards). After completing
the gear change, the gear lever moves back to
its starting position.
Gear
lever
Figure 18: Changing gear using the PRO ACTIV
operating machine
Gear display
Change up
Change
down
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