Specific methods:
1. Find a bracket with a relatively strong carrying capacity and install the motor on the bracket.
2. Determine the diameter of the motor and select the weight lever of the matching size.
3. Install the weight lever on the motor shaft and make sure it is installed well.
4. Calculate the torque based on the weight, connect the motor to the power supply, rotate the weight at the same speed, and measure the torque the weight bears.
5. Compare the measured torque with the calculated torque to determine the motor torque.