Things to Consider Before Buying Motors for RC Trucks and Cars
Updated on January 24, 2023 | by Alan Biles
The technology behind RC cars and trucks has improved exponentially over the past century. Many RC vehicles are out there, requiring different things to run properly. One of the essential parts of an RC vehicle is the motor. If you have good RC motors, it will be easier for your car or truck to perform well on the terrain. This article contains some things you should know about RC motors before deciding which is suitable for your vehicle.
Brushed Versus Brushless Motors
There are two types of motors that you can use in your RC truck or car: brushed and brushless. Brushed motors are the most common because they are cheaper and easier to produce, but they have a fixed number of poles (the magnets in the motor) that will determine how many times per revolution each phase (or half-circle) is energized.
Brushless motors also have an adjustable number of poles, which means you can change them as needed to increase or decrease the torque output from your vehicle without having to replace anything else. Brushless motors give you more control over your power output than their brushed counterparts—but this comes at a cost: they’re more expensive and require more maintenance since there are moving parts inside that need to be serviced regularly. Brushless designs tend to be more reliable over time because each part has a protective shell, preventing damage due to friction during operation.
Sensorless Versus Sensored ESCs and Motors
Sensored ESCs and motors are more efficient, offering better performance and a longer lifespan. Sensorless ESCs and motors offer greater power at the expense of efficiency, but it can also mean a shorter lifespan for your vehicle.
As the name implies, sensored systems use a sensor to determine when the stator coils in your motor should be cut off when the current is flowing. Sensorless systems don’t have this additional hardware, so they can’t control exactly how much voltage goes into each phase of your motor’s windings at any given time. This means they’re more powerful than sensored systems but less efficient.
Understanding KV Rating
KV rating, or kV per volt, measures a motor’s top speed in RPM (revolutions per minute). KV ratings are usually listed in numbers that indicate how many RPMs the motor can reach a specific voltage.
Motor Size and Its Relationship with Battery Size
The first thing you need to consider when buying RC motors for your car or truck is the size of your battery. The reason is simple: Motor size is determined by the battery size. If you want a larger motor, you must buy a larger battery.
The second point is that bigger batteries mean more power and higher top speeds, but they also mean heavier RC cars because they have more stored energy. You can control all this by choosing your motors wisely and matching them with their corresponding batteries so your car or truck will work smoothly without overheating or draining too quickly.
When buying a motor for your RC vehicle, you should consider the type of motor you want (brushed or brushless), whether it’s sensored or sensorless, and how much power you need. With these things in mind, you can find a motor that will last for years without any problems.