LM-Motor FS2306 and FS2812

Commonly, the product name of FPV motors is formed by a group of two numbers. The first one refers to the dimensions of the motor and the second one to the speed of the motor. Brushless motors have two main parts: the rotor with permanent magnets and the stator with copper coils. After learning to decipher the numbers on FPV motors, we will analyze two motors from LN-motor in detail.

The first number has four digits (DDHH) and represents:

  • “DD” is the stator’s diameter (or width) measured in millimeters.
  • “HH” is the stator’s height in millimeters.

For example, the LN-motor FS2812 has a stator with 28mm diameter and a stator height of 12mm. Bigger motors have larger magnets that are capable of generating more thrust.

How to measuring stator diameter
How to measure stator diameter with a micrometer

The second number is “KV” and represents the number of revolutions per minute (RPM) with no load when a one-volt is applied to the motor’s terminals. Therefore, theoretically,…


Source: www.firstquadcopter.com