This set of gears is aimed at upgrading all the servos in
early Robobuilder kits* that came with gear n. 4 in plastic.
Upgrading Gear number 4 offers improved durability and reliability.
The kit includes:
* Please note the latest Robobuilder Kits already
include the 4th Metal gear; servos purchased separately do not include this
If you are unsure, remove the cover of a servo and check if the bigger gear (gear 4) is metal or plastic. If it is metal, then this upgrade is already installed in your Robobuilder.
This set assumes you have the standard Robobuilder Kit with 16 DOF / servos.
If you have additional DOF please upgrade those gears accordingly. Please refer
Standard Gear List and Upgrade Guide for more information.
This guide is also useful if you wish to upgrade the rest of the gears to metal (Upgrade the Robot to Full Metal Gears).