WHAT IS A in runner motor?

The term inrunner refers to an electric motor where the rotor (runner) is inside the stator. The term is in particular used for brushless motors to differentiate them from outrunners that have their rotor outside the stator. The vast majority of electric motors are inrunners.

Do outrunner motors have more torque?

Outrunner and inrunner torque motors Outrunner motors produce more torque for the same build volume compared to inrunner motors.

What is the difference between outrunner and inrunner motors?

Physical Size differences Generally speaking brushless outrunner motors will have a larger diameter and a smaller length vs a comparable inrunner motor of similar weights. Conversely, Inrunners are smaller in diameter and typically larger in length.

How do brushless outrunner motors work?

A brushless DC motor is essentially flipped inside out, eliminating the need for brushes to flip the electromagnetic field. In brushless DC motors, the permanent magnets are on the rotor, and the electromagnets are on the stator.

What is an inrunner motor?

The term inrunner refers to an electric motor where the rotor (runner) is inside the stator. The term is in particular used for brushless motors to differentiate them from outrunners that have their rotor outside the stator. The vast majority of electric motors are inrunners.

Are brushless inrunner motors more efficient than outrunner motors?

In general for most applications in RC, a brushless inrunner motor has the potential to be more efficient than a brushless outrunner motor. Let’s consider waste heat that a motor outputs. If we look at the brushless outrunner motor, heat must be dissipated through the center of the motor.

What is the difference between an outrunner motor and a motor wind?

Although different motor wind selections (same size motor with Kv options) provides a decent range, outrunner motors will typically have a lower Kv value. This is key in your selection of a brushless motor to directly fit your application.

Do outrunner motors have a lower kV?

Although different motor wind selections (same size motor with Kv options) provides a decent range, outrunner motors will typically have a lower Kv value. This is key in your selection of a brushless motor to directly fit your application. How does an outrunner produce lower Kv? Well, we already did speak about physical size difference.