The motor is not turning smoothly.Updated 2 months ago

Possible Causes

• The motor may not have been rinsed sufficiently after use. 
• Lack of maintenance and lubrication can also cause issues. 
• Bearings might be rusted or worn. 
• The inner coating of the motor bell could be damaged, or the motor surface itself may be compromised.
• Loose motor or ESC screws on the mast can also lead to problems.

Actions

• Tighten all motor and ESC screws on the mast. 
• Inspect the motor and bearings for corrosion or rust, then clean and lubricate them. 
• Spin the motor by hand and listen or feel for grinding; if grinding is present, replace the bearings. 
• Check the inside of the motor bell for coating wear; if damaged, refurbish the motor bell or replace it.
• Inspect the motor surface for swelling or deformation; if present, refurbish the motor or replace it. 
• Finally, check for motor wobble or excessive vibration when spinning; if wobbling occurs, test using an alternative motor bell.