3 ms·
There is a freewheel between the chainrings and the pedal cranks/shaft. Thus, the pedals can be stationery, while the motor is driving the chainrings.
by gkasev 5y ago
There is a freewheel between the chainrings and the pedal cranks/shaft. Thus, the pedals can be stationery, while the motor is driving the chainrings.