What to consider when choosing the engine for your radio-controlled car

What to consider when choosing the engine for your radio-controlled car

The engine of an RC car is one of its most important components as it determines the efficiency of the car and how much fun one would have with it. It is thus important to properly consider the features of the engine of a car before committing to buying it. Several features make an engine the best for a particular RC car. This article highlights the different specifications of an RC car engine which one should look out for before buying it.

Typically, certain engines are prescribed by the manufactures of the RC kit. The prescribed engines are not always the best engines in the market, and it is important to know how to compare the different features that make the best engine. When one is armed with pieces of information that determine the suitability of an engine for a car, they could look out for better engines than those recommended by the manufacturers.

Brushed and brushless motors

Two types of engine motors exist: the brushed and brushless motors. These motors differ in their functionality and capacity. Although there are still several brushed motors on the market, brushless motors are more efficient and less prone to wear and tear. Brushless motors are typically known to serve users better.

Other parameters to consider

Voltage constant

The voltage constant is another parameter to consider when getting an engine for an RC car, as it is a measure of the RPM produced by the engines for the each of the applied voltage. Thus the voltage constant multiplied by the number of volts gives the RPM. Engines with smaller voltage constants are known to be more efficient.

No current load

No current loads are a measure of the amount of current an engine an RC car needs to spin without propping. The higher the no current load, the higher the current needed to prop the car.

Power and current

The power and current of a motor will determine its prop as well as its efficiency. To ensure that an engine is the best for a particular RC car, it is important to know the amount of current it will require to function maximally without overheating.

Torque constant

The ideal torque constant varies for inrunner and outrunner RC cars. For outrunner cars, engines with larger torques which means smaller voltage constants are ideal. Inrunner cars, however, work best with engines that have smaller torques and larger voltage constants.

Terminal resistance

Typically, engines with higher terminal resistance are less efficient than motors with lower terminal resistance. The unit of terminal resistance of the motor of an engine is ohms, and it is important to ensure that the terminal resistance of a motor is low for the highest efficiency.

The engine of an RC car will determine its efficiency. Ensure that the specs of an engine are best fitting for a car, even if the engine is recommended by the manufacturer.