# Question: What do the numbers on RC motors mean?

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## What do the numbers mean on a RC brushless motor?

The configuration number tells you how many electromagnets there are on the stator, and the number of permanent magnets there are on the rotor. The number before the letter N shows the number of electromagnets there are in the stator. The number before the P shows how many permanent magnets there are in the rotor.

## What is the difference between a 550 and 540 RC motor?

Well, both the 540 and 550 motors are quite similar and denoted by the extra diameter of their can. The main difference stands in its torque, speed, RPM, and usage. A 550 motor has a greater power which is used in heavier trucks compared to 540 motors.

## How do you read an RC motor?

RC motors are typically listed along with their ‘turn’ and/or ‘Kv’ numbers. Turns (often stated just as T) refers to the number of times the internal wiring wraps around the armature. As a rule of thumb higher turn motors have higher torque and less RPM thus ’55T’ units are suited to RC crawlers.

## What does 540 mean in RC motors?

540/550 describes the size of the motor can. Larger numbers mean bigger can diameter. Turns and kv are related, in that the lower turn motors are higher kv. Less turns means higher rpm, with less torque.

## What is a 550 size motor?

A 550 is a physically larger motor. Same 36mm diameter, but while 540s are typically 50mm in length, a 550 can be anywhere from 55mm to 90mm long.

## What is a KV rating?

The Kv rating of a brushless motor is the ratio of the motor’s unloaded rpm to the peak voltage on the wires connected to the coils. Knowing the Kv rating of a motor will help you determine how fast that motor will rotate when a given voltage is applied to it.

## What does the T mean on brushed motors?

The higher the kV rating the faster the R.P.M of the motor. The lower the turns, the higher the R.P.M. of the motor. 3.5T means 10,500 RPM. 4.5T means 9,000 RPM.

## What is a 775 motor?

The number 775 is the Size ID of motor accepted as a standard. Its casing is made of rustproof material mainly steel with some protective coatings, with few plastic parts. It is a high torque high power device for mid to high-power applications generally in robotics, quadcopters, and industrials.

## What does 12T mean on RC motors?

Twelve turns around each motor pole using triple wires. Three wires are would twelve times around the pole. A 12T double would use two wires wound twelve times and a 12T single a single thicker wire wound twelve times around each rotor pole.

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## How can you tell how many Poles a brushless motor has?

Since the number of poles is equal to the number of permanent magnets in the rotor, the simplest way to determine the number of poles is to count the magnets manually. This is possible if you can see into your motor or if you are able to remove the outer casing.

## What does 12 turn motor mean?

ORIGINAL: Dawman. A 12 turn motor will be tons faster and will drain a battery faster . Just as he said. a twelve turn motor will have more RPM, less torque, and draw more current. The number or turns refers toi the number of times the wire is warpped around your armature in the motor.

## What size shaft does a 540 motor have?

3.17 mm is a very common diameter for 540 size motor axles.

## What is a 540 type motor?

Tamiya Type 540 Brushed Motors

It’s a very all-round motor, designed to work on both on- and offroad surfaces. Most are made by Mabuchi, although a few are made by Johnson.

## How many turns is a Tamiya 540?

For other motors, the Tamiya “Sport Tuned” motor (27 turns with advanced timing, equivalent to a 23 turn motor with neutral timing) is hard to beat on cost/performance increase, even if it they haven’t done much to earn the higher price tag.