Seat Post; Saddle - Bosch i:SY E5 ZR F CX Translation Of Original Operating Instructions

6.4.3

Seat post

6.4.3.1 Adjusting the seat post to body weight
Not included in price
Seat post are components that may be replaced
§
after approval by the vehicle or parts
manufacturer. Only seat posts that are approved
for use on e-bikes may be used to replace
existing ones.
Replacing with different sizes and hardnesses
within a product series is permitted for seat
posts. Moreover, seat posts may be exchanged
if the rearward offset for the series or original
range of use is not greater than 20 mm. This is
because a change in load distribution outside the
intended adjustment range can lead to
hazardous steering performance. The seat post
length must always be the same when replacing
posts.
The correct functioning of the following seat posts
depends on the body weight:
• Suspension seat post
• Rhomboid seat post
• Lowerable seat post
If the body weight falls below or exceeds the
specifications in Section
weight (PTW), either the seat post spring or, in the
case of integrated seat posts, the complete seat
post must be replaced with a seat post from the
same product series that is appropriate for the
body weight.
The preload in non-damped suspension seat
posts must be adjusted in such a way that the
suspension seat post does not deflect with just
body weight. This prevents the suspension seat
post from deflecting and bobbing intermittently at
higher pedalling frequencies or if the rider pedals
irregularly.
The spring stiffness can be set lower with damped
suspension seat posts, thus making use of the
negative deflection.
MY23I0a - 42_1.0_22.01.2024
Maximum permitted total
6.4.4

Saddle

6.4.4.1 Replacing the saddle
Not included in price
Saddles are components that may be replaced
§
after approval by the vehicle or parts
manufacturer. Replacing different sizes within a
product series is permitted for saddles.
Moreover, saddles may be exchanged if the
rearward offset to the series or original range of
use is not greater than 20 mm since a change in
load distribution outside the intended adjustment
range can lead to critical steering performance.
The saddle shape plays a role here. Only
saddles that are approved for use on e-bikes
may be used to replace the existing ones.
If the pre-mounted saddle is uncomfortable or
causes pain, a saddle optimised to the rider's
physique must be used.
1 Determining the saddle shape
Section 6.4.4.2).
2
Determining the minimum saddle width
Section 6.4.4.3).
3 Selecting the saddle hardness
Section 6.4.4.4).
Operation
(see
(see
(see
116