Introduction
It might be tough to choose the right electronic speed control (ESC) and motor for your RC vehicle. This is due to the many various types and sizes of RC cars accessible. The wide selection of goods available is also a reason.
You might be wondering – what is the best brushless motor and ESC combo?
If you’re considering getting a new ESC and motor, the first thing to consider is speed. The battery’s application or type also matters. You’ll also have to consider the battery voltage compatibility. The first thing that springs to mind when thinking about motors is their size. Then comes the shaft size and power.
However, there are a lot of factors to consider too. We’ll go through all the details here.
So what are you waiting for? Let’s get started.
ESCs
When looking for a suitable ESC to connect with a motor, there’re a few things to keep in mind. Let’s find out what factors we came up with.
Speed
Starting with the speed control, your options are determined by the motor you intend to use. Because the ESC and motor must work together, they must be compatible. The first consideration is whether the ESC will be used with brushed or brushless motors.
Battery Voltage Compatibility
Make sure it can handle the sort of battery voltage you’re using. Also, check to see if it can handle the motor specifications you have in mind. The good quality ESCs have a motor restriction (in kV or turns). To which you must abide.
Assume the ESC specs state that the motor limit on a 2S battery is 8.5T. Then you’ll need a motor with at least 8.5 turns. Consider the usage of a kV rating. Then pick a motor with a kV value less than the limit.
Size of the ESC
The size of the ESC is another element to consider when it comes to ESCs. Or making sure it fits into your vehicle properly. Furthermore, certain ESCs are waterproof or shielded, but the majority are not. As a result, consider if this is a feature that you require.
These are the considerations to evaluate while purchasing ESCs. If you’re done, let’s see what we have to consider for the motors.
Brushless Motors
A Brushless or brushed RC motor is an option to consider. Over the past 15 years, the brushless technology of the motors has developed massively
We nearly always recommend a brushless configuration. Unless your car is used in a very specialized class or under extremely specific conditions.
Size of the Motor
When it comes to motors, the first thing to look at is the actual size and dimensions. Because different motor sizes are available for RC cars. The size of the motor that the car is built for is generally specified in the specifications. If you are unsure, check this before making a decision.
The “540” motor size is arguably still the most popular motor size used in RC cars. These are seen in a lot of 1/10 scale cars. Larger “550” or 1/8 motors are commonly featured in heavier 1/10 and 1/8 scale vehicles.
Brushless motors of this size are now commonly referred to as “4-pole” motors. In certain smaller cars, smaller motors (such as 370 or 380) are installed. Larger motors are used in big size RC cars.
Shaft Size
The diameter of the motor shaft might vary. There are also variations in the diameter and length of the actual motor. 3,175mm (1/8”) is the most frequent shaft size. A 5mm shaft is used by many bigger motors. The accessible gears are directly related to the shaft diameter.
The location of the mounting holes in each motor is likewise determined by their size. As a result, it’s critical to choose which motor is appropriate for your vehicle.
Sensor/ Sensorless
Brushless motors are available with or without sensors. Sensor-availed motors have sensors built into the motor that detects the rotor’s location. Sensor-availed motors are more responsive while operating at low rpm. They also have a more precise feel to them. As a result, it’s used in competition more than sensorless motors.
Sensorless motors are simpler and, in most cases, less expensive. They’re commonly used in RTRs and for other hobbies.
Power of the Motor
A motor’s power is generally expressed in “kV” or “turns,” or both. The kV of a motor is the number of revolutions per volt of electricity it produces.
On 540 size motors, notably 1/10 racing motors, turns are frequently used instead of kV to represent power. The turn number indicates how many times the motor’s wire is wrapped around the stator. To put it simply, the fewer spins the motor has, the more power it generates.
Torque becomes increasingly important as a car’s power and weight increase. A low kV yet high torque motor will be preferable for a hefty 1/8 car.
It is critical to have the proper gearing with any motor option. Always remember to alter the gearing before switching to a different motor that you’re used to. Going to a higher-powered engine will also have cons. It will reduce the amount of operating time on a single charge and create more heat.
FAQs
Question: Is a motor with a greater kV faster?
Answer: The higher the kV, the greater the motor’s RPM and power. A 9000Kv motor, for example, would be quicker than a 2200Kv motor.
Question: Does a higher KV imply more torque?
Answer: Torque is determined by the number of windings on the armature and the magnet strength. A motor with a low kV will carry more volts at lower amps. Also, will create greater torque, and swing a larger prop.
Question: Why does a brushless motor have three wires?
Answer: BLDCs have three wires that are powered by a phase-shifted AC waveform from the ESC. Each wire’s waveforms are 120 degrees apart from the other two. This is because BLDC motors are three-phase AC motors with several coils per phase.
Conclusion
Congrats! You’ve finished our facts. Now you should know what is the best brushless motor and ESC combo. If you’re going from a brushed to a brushless motor, keep that in mind. So you’ll need a brushless ESC as well.
If you’ve any queries, feel free to reach us. Till then, all the best!
