The Electric RC Motor is perhaps one of the most important components in terms of its overall performance. The type of motor used and it's characteristics are dictated by the application and the intended use of the RC Model. Arrma RC Motors are split into two main types. Brushed and Brushless. Arrma RC Motors are then further sub categorized within those types by their performance characteristics. The RPM and available Torque being the biggest factors, as well as power consumption, how controllable they are, and their physical Can Size. Here at MIBI we offer a variety of Arrma RC Motors, and can help suggest the right one for you. It doesn't matter if you are replacing a stock motor in a RTR RC Car, or putting together the ultimate in Race Vehicles, we have something in our range for you.
Arrma Brushed RC Car Motors are most common in entry level RTR Models such as RC Cars and certain classes of Club Level RC Car Racing. They are also used in the Scale and Rock Crawling community due to their ability to offer Maximum Torque at very low RPM. Their construction means that the magnets were inside the motors can, with an wound armature inside powered by two brushes giving the armature positive and negative electrical energy and creating an electromagnetic effect. The rule of thumb is that the lower the Wind and the higher the Voltage the more RPM it produces. The higher the wind and number of Poles the more Torque it produces. It's a delicate balancing act between those factors to get the characteristics your Car, Boat, Plane or other type of RC Model requires.
Arrma Brushless RC Motors are exactly that. They have the winds on the inside of the can itself, instead of an Armature they have the Rotor at their core with the Magnets on it and again is supplied voltage from three points of input in sequence to create a magnetic field and cause the motor to spin. As with Brushed Motors, they can be Low Wind and produce higher RPM or High Wind and favour Torque.
Arrma Brushless motors come in two flavours. Sensorless or Sensored. Sensorless motors are less smooth at lower RPM's as they apply electrical energy to the rotor less precisely at first when you hit the throttle and send power from the ESC (Electronic Speed Control) to the three points of input. It takes a small amount of time for them to become In Sync with the ESC and produce smooth RPM. In practice this is almost unnoticeable in some RC Motor applications, but for anything that requires low RPM Throttle Finesse, then the more precise and controllable Sensored Motors are recommended.
The great thing about using a Arrma RC Motor in your RC Vehicle, is that you can change a vehicles top speed or torque, simply by changing the motor. This in conjunction with the correct gearing can transform a entry level RTR into a more competitive and fun vehicle to Drive, Pilot or Fly. Here at MIBI we can assess the possibilities and potential of your current RC Motor, suggest Arrma options, and a recommended upgrade path.