.
32
.
Maintenance
Solution: replace the controller.
IX. Fault: Sometimes, after applying the brake while riding, the throttle does not respond.
Failure cause: the lever fails or is damaged after being used for a long time; Solution: replace the brake switch.
X. Fault: short cruising range.
Failure cause analysis: The range of the bike depends on various factors, some of which are determined by the
manufacturer: the efficiency and performance of the motor, the capacity and lifespan of the battery;
Some other factors that affect the range are related to the external conditions: the rider’s weight, the road surface,
the frequency of braking, the riding style, etc. 1. Regarding the motor itself :
a. Low efficiency-the motor converts less electric energy into mechanical energy and more into heat. This type of
motor cannot run for long and usually overheats.;
b. Magnet degradation-over time, the magnets will lose some of their strength, but the degree varies. However, if the
magnets are of low quality and have poor resistance to demagnetization, they will weaken quickly, resulting in a significant
drop in motor performance, an increase in operating current and a reduction in range.
2. From other aspects:
a. The quality, capacity and temperature performance of the battery; b. The compatibility of the controller and the
optimal undervoltage level of the controller; c. Whether the selected motor specification and the supporting of the whole
vehicle are reasonable.
3. From the objective situation:
a. a. Vehicle load; b. The rolling resistance of the riding road is different from that of the road; c. Cyclists' riding habits,
whether they start and brake frequently.
Solutions:
a. Select high efficiency motor; b. Match the parameters of controller and motor and set reasonable undervoltage
value; c. Select batteries with high energy density; d. Do not overload; e. Develop good riding habits.
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