Brake; Change Handbrake Position; Change Handbrake Inclination Angle - Bosch ZEMO SU-E FS 12 Translation Of Original Operating Instructions

6.5.8

Brake

The handbrake grip distance can be adjusted to
ensure that it can be reached more easily. The
pressure point can also be adjusted to the pedelec
rider's preferences.

6.5.8.1 Change handbrake position

Having the brake handle in the correct position
prevents the rider from stretching their wrist too
far. Moreover, the brake can also be operated
without any discomfort and without changing the
handle position or releasing the handle.

Apply handbrake with the third finger phalanx in
bursts to brake gently.

The setting for the middle finger is used for
pedelec riders who brake with their middle finger
or with two fingers.
1 Position your hand on the handle in such a way
that the outer heel of the hand is flush with the
end of the handlebar.
2 Extend the index finger (about 15°).
15°
Figure 125: Brake handle position
3 Push handbrake outwards until the third finger
phalanx sits in the recessed grip.
MY22Z01 - 12_1.0_25.07.2022

6.5.8.2 Change handbrake inclination angle

The nerves that pass through the carpal tunnel
are connected to the thumb and the index and
middle fingers. An excessively steep or
excessively flat brake angle will cause the wrist to
bend, thus narrowing the carpal tunnel. This can
cause numbness and tingling in the thumb and
index and middle fingers.
1 Calculate the difference between the height of
the handlebars and the saddle height to
determine the saddle-handlebar height
difference.
Figure 126: Example of 4 different handlebar heights
(A, B, C and D) and the saddle height (E)
Calculation
–
A E
–
B E
–
C E
–
D E
Table 45: Examples of saddle-handlebar height difference
Adjust the angle of the handbrake so that it forms
a natural extension of the forearm.
Operation
A
B
E
C
D
Saddle-handlebar height
difference [mm]
>10
0... +10
0... -10
< -10
107