How to Install a Servo in an RC Car

Written by jonathan striblet
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How to Install a Servo in an RC Car
Replacing servos can improve the performance of most RC vehicles. (rc-modell image by andreas from

Servo motors are looked at as the most important parts of most remote control vehicles. Installing an RC car servo is a simple upgrade that can greatly improve the steering, throttle control and braking performance of your vehicle. Depending on the servo you purchase, it can change the driving experience of your car tremendously. Installation is not difficult and can take as little as 20 minutes before your RC vehicle is up and running again.

Skill level:

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Things you need

  • Screwdrivers

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  1. 1

    Unscrew and remove your stock servo, if upgrading to a new one. Taking note of the position and orientation of all arms and steering horns that are connected to the gears. Also take note of the position of the servo, while the wheels are straight, if upgrading the steering servo.

  2. 2

    Center the new servo before screwing it into the chassis. This will ensure the gears are centred inside the servo. To do this, plug the servo into the first channel of the receiver on the RC car. Turn on your transmitter or controller and zero out the steering trim. Turn on the car, and the servo will centre itself.

  3. 3

    Replace the servo horn if upgrading the steering servo, remembering to install the horn in the same position that it was removed in. Then screw the servo back into position.

  4. 4

    Connect the steering linkages if replacing the steering servo.

  5. 5

    Zip tie all loose wires to the chassis to prevent them from dragging on the ground or getting caught in gears.

  6. 6

    Drive the car slowly forward, and adjust the trim until the car moves in a straight line.

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