Consider the intended use of the RC car. If you’re using it for casual driving or scale modeling, a 3S LiPo battery might provide more power than necessary. On the other hand, if you’re into high-speed racing or bashing, a 3S LiPo can offer exhilarating speeds.
Higher speeds and increased power can put additional stress on the chassis, drivetrain components, and suspension. Ensure that the RC car’s components are durable enough to handle the potential increase in speed without suffering excessive wear or damage.
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It is possible for a brushless motor to be too fast for a plastic RC car (most Tamiya RC cars are plastic), depending on the quality and durability of the car’s components. Brushless motors are known for their high performance and speed, and they can generate a lot of power, which may be more than a plastic RC car can handle.
Plastic RC cars are typically designed for use with brushed motors, which are slower and less powerful than brushless motors. While some plastic RC cars may be able to handle a brushless motor, others may not be able to handle the increased power and speed, which could cause damage or failure of the car’s components.
If you are considering upgrading your plastic RC car to a brushless motor, it is important to do your research and make sure that the car’s components are strong enough to handle the increased power and speed. It may be necessary to upgrade the car’s chassis, suspension, and other components to ensure that it can handle the added stress of a brushless motor.