Bosch ZEMO SU-E FS 12 - Mechanical Drive System; Chain Drive Layout; Belt Drive Layout

MY22Z0a - 12_1.0_25.07.2022
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Description
3.3.9 Mechanical drive system
The pedelec is driven by muscle power, just like a
bicycle.
The force which is applied by pedalling in the
direction of travel drives the front chain wheel.
The chain or belt transmits the force onto the rear
chain wheel and then onto the rear wheel.
Figure 37: Diagram of mechanical drive system
1 Direction of travel
2 Chain or belt
3 Rear chainring or belt pulley
4 Front chainring or belt sprocket
5 Pedal
The pedelec is equipped with either a chain or belt
drive.
3.3.9.1 Chain drive layout
Figure 38: Chain drive with derailleur gears
1 Rear derailleur
2Chain
The chain drive is compatible with a
• Back-pedal brake,
• Hub gear or
• Derailleur gears.
3.3.9.2 Belt drive layout
Figure 39: Belt drive
1 Front belt sprocket
2 Rear belt sprocket
3Belt
A belt drive is compatible with
• Back-pedal brake and
• Hub gear.
A belt drive is not compatible with derailleur gears.
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