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Drivetrain systems
8
Drivetrain systems
The term ‘drive’ refers to a mechanism that generates a movement
in order to move an object.
In the case of a bicycle, muscle power is transferred to the drive
wheel via the pedals.
Depending on the bicycle model, your bike will be fitted with a chain
or belt drive system.
•
Check whether your bicycle is fitted with a chain or belt drive
system
(see Fig.
“Chain drive system” and Fig. “Belt drive system” ).
8.1
Pedal drive
8.1.1
Basic information
Assembly consisting of pedal, pedal crank, bottom bracket and
chainring.
Fig.: Pedal drive
1 Chainring
2 Bottom bracket 3 Pedal
4 Pedal crank
1
3 4
2
8.1.2
operation
Push the pedals with your feet in order to set the pedal drive – and
thus the whole bicycle – in motion.
8.1.3
Checking the condition of the pedal drive
• Take hold of the pedal and try to move it in a vertical direction,
up and down (1). While doing so, check to see if the pedal and
crank arm or bottom bracket move vertically.