Handlebars; Replace Handlebars; Adjusting The Handlebar Width; Adjusting The Hand Position - Bosch ZEMO SU-E FS 12 Translation Of Original Operating Instructions

6.5.5

Handlebars

6.5.5.1 Replace handlebars

Not included in price
Handlebars are components that may be
§
replaced after approval by the vehicle or parts
manufacturer. Handlebars may be replaced if the
cable and/or line lengths do not need to be
changed. A change in riding position is allowed
within the original cable length. Furthermore, the
load distribution on the pedelec changes
considerably and may potentially lead to critical
steering performance
 Check handlebar width and hand position.
 Have handlebars replaced at the specialist
dealer's if necessary.

6.5.5.2 Adjusting the handlebar width

The handlebar width should be as wide as the
rider's shoulders as a minimum. This is measured
from mid-point to mid-point on the hand contact
surfaces.
Figure 123: Determining the optimal handlebar width
The wider the handlebars are, the more control
they provide, although wide handlebars require
greater supporting force. Wider handlebars are
particularly useful to ensure a safer ride for loaded
touring bikes.
MY22Z0a - 12_1.0_25.07.2022

6.5.5.3 Adjusting the hand position

The hand is an optimal position on the handlebars
when the forearm and hand are in a straight line,
i.e. the wrist is not bent. In this way, the nerves are
not pinched and do not cause pain.
28°
Figure 124: Distribution of nerves with curved and
straight handlebars
The narrower the shoulders are, the greater the
bend of the handlebars should be (maximum 28°).
Straight handlebars are advisable for sports bikes
(e.g. MTB). They support direct steering
behaviour, but lead to peaks in pressure and
greater muscular strain on the arm and shoulder
muscles.
Operation
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