Servo and Steering Assembly Directions

Document created by GUO XIAOLI Employee on Jul 12, 2012Last modified by johnmc on Dec 9, 2013
Version 4Show Document
  • View in full screen mode

This page will guide you through the attachment of the servo to the Freescale Cup chassis.   The servo steers the vehicle and is controlled usingPulse-width modulation .

Video Tutorial (no sound):


Freescale Cup Servo Assembly



(Click any image to enlarge)

Servo Plate


Inside the kit are various mounting options for different servo manufacturers. Look for the bushing of the servo that you are using.

You will need the three pieces shown below. You will screw this into the servo.




Pieces are notched, so assembly is straight forward.




Remove the screw and black servo plate.




Mount the yellow servo plate assembly to the servo as shown below. Make sure to add the small yellow washer (pictured below) in between the servo plate and the screw.



Tighten well, a servo produces a good amount of torque and will slip if not tight.

Steering Bar Assembly


Assemble the short arm.


Assemble the long arm.
Steering8.jpg  Steering9.jpgSteering10.jpg

Putting the Two Together


Attach the short arm to the yellow bracket.


First, insert the bearing into the control arm. This allows the joint to flex and move.


Screw this assembly into the servo plate.


Attach the long arm to the yellow bracket.

Mounting the Servo Motor


Attach the motor mount blocks to the back of the servo on both sides.

Screw in the attachment blocks from the bottom of the car.




Words of Wisdom


  1. Be sure to have servo motor in the 0 degree position before securing the control arms. Failure to do so will result in not being utilize the full range of motion.
  2. Do not change the position of the steering servomotor by hand. The position of the steering servomotor should be changed through electrical input only.
  3. Don’t move the steering servo motor beyond the maximum limit of the movement and this will damage the servo motor