It may be caused by loose or damaged connectors between the swing arm and the body.

Connecting parts such as screws and nuts that are not tightened or are loose can cause the swing arm to wobble while traveling.

In addition, if the connecting parts themselves have quality problems or are badly worn, this may also cause the swing arm to loosen.

The USB charger cannot properly charge the HAIBOXING HBX RC car battery, which may be caused by a damaged charger, poor interface contact or low battery voltage.

If the charger is too powerful, it will cause the battery to generate too much heat during charging.

In addition, poor quality charging cables may result in poor current transfer and increase the amount of heat generated when charging the battery.

During prolonged use, the oil seal of the shock absorber may lose its sealing effect due to wear and tear, resulting in oil leakage. In addition, if the shock absorber is installed with improper dimensions, such as front and rear fork openings that are too large or too small, it may also cause early wear of the oil seal and oil leakage.

If the gear set of the servo has poor mechanical precision and large tooth vanes, it may also cause the servo to keep adjusting and making a rattling noise.