(1) Cotter pin
(1) tail wheel ball
(2) wheels
(2) O-ring tires
(2) Screws that you saved earlier.
- If your servos have #900-00040 on their labels, the two black plastic screws were saved at the start of Center the Servos First [1].
- If your servos have #900-00008 or no part number on their labels, the two black metal screws were saved at the end of Remove the Servo Horns [2].
Optional: Needle-nose pliers (not included in the kit)
CAUTION - the ends of the cotter pin may be sharp! If you have needle-nose pliers, you can bend the cotter pin ends into a circle to tuck away the points. But be aware that this makes the cotter pin more difficult to remove in the future if you ever want to do that.
The robot’s tail wheel is merely a plastic ball with a hole through the center. A cotter pin holds it to the chassis and functions as an axle for the wheel.
Links
[1] https://learn.parallax.com/tutorials/robot/cyberbot/build-your-cyberbot-rev-c-board/center-servos-first
[2] http://Remove the Servo Horns