Bosch Intuvia 100 - Change Handbrake Inclination Angle; Determining the Grip Distance

MY23P0a -52_1.0_11.10.2022
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Operation
6.5.9.4 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 130: Example of 4 different handlebar heights
(A, B, C and D) and the saddle height (E)
Adjust the angle of the handbrake so that it forms
a natural extension of the forearm.
2 Set the brake lever angle as indicated in the
table.
Figure 131: Brake angle
6.5.9.5 Determining the grip distance
1 Measure hand size using the grip distance
gauge.
2 Adjust the grip distance at the pressure point
based on the hand size.
Figure 132: Handbrake positioning
Calculation
Saddle-handlebar height
difference [mm]
A
– E
>10
B – E
0… +10
C – E
0… -10
D – E
< -10
Table 57: Examples of saddle-handlebar height difference
A
B
C
D
E
Saddle-handlebar height
difference (mm)
Brake angle
>10 20°…25°
0… 10 25°…30°
0… -10 30°…35°
< -10 35°…45°
Hand size Grip distance (cm)
S 2
M 3
L 4
20 – 25° > 10 cm
25 – 30° 0 – 10 cm
30 – 35° 0 – 10 cm
35 – 45° > 10 cm
E
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