VEX Robotics and COVID-19

Click here for Frequently Asked Questions regarding VEX Robotics and COVID-19.

VEX Robotics is still shipping orders in accordance with our shipping policies and timelines. To best serve our customers, any freight orders will require manual confirmation in advance that you are still able to receive shipments.

If you have any questions or require special considerations, such as changing a shipping address on an existing order, please don't hesitate to contact sales@vex.com or 903-453-0802.

VEX Robotics and COVID-19

Click here for Frequently Asked Questions regarding VEX Robotics and COVID-19.

VEX Robotics and COVID-19

Click here for Frequently Asked Questions regarding VEX Robotics and COVID-19.

To best serve our customers, any freight orders will require manual confirmation in advance that you are still able to receive shipments.

If you have any questions or require special considerations, such as changing a shipping address on an existing order, please don't hesitate to contact eusales@vex.com or 00 44 1925 251038.

VEX Robotics and COVID-19

Click here for Frequently Asked Questions regarding VEX Robotics and COVID-19.

To best serve our customers, any freight orders will require manual confirmation in advance that you are still able to receive shipments.

If you have any questions or require special considerations, such as changing a shipping address on an existing order, please don't hesitate to contact eusales@vex.com or 00 44 1925 251038.

VEX Robotics and COVID-19

Click here for Frequently Asked Questions regarding VEX Robotics and COVID-19.

To best serve our customers, any freight orders will require manual confirmation in advance that you are still able to receive shipments.

If you have any questions or require special considerations, such as changing a shipping address on an existing order, please don't hesitate to contact auinfo@vex.com or 61 08 8326 5500.

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Drivetrains

VEX IQ Curriculum - Mechanisms


Drivetrains (Grades 4-8)

Mobile and Competition robots will vary greatly depending on the tasks they are designed for. However, one thing common among them is that they usually have some method for moving. The robotic subsystem that provides the ability to move is often known as a Drivetrain. Drivetrains may come in many different forms – two examples are wheels or treads (like a tank). The wheeled, rolling drivetrain is the most common one found in competition robotics and one of the most popular in the entire industry.


Drivetrain Design

The most basic, multi-functional competition robot Drivetrain design consists of:


  • A rectangular Chassis (the structure of a mobile robot that holds wheels, motors, and/or any other hardware used to make up a Drivetrain)
  • Two Motors
  • Four Wheels
  • Gears transmitting Power from the Motors to all Wheels

The Clawbot IQ Standard Drive Base is one example that you can build. However, Drivetrains can come in all shapes and sizes - some don’t provide power to all wheels, use different types of wheels, or are not even a rectangular shape! Whatever the details of your Drivetrain, you should always be aware of a property known as Turning Scrub.


Turning Scrub is the friction that resists turning. This friction is created from the wheels dragging sideways on the ground as a robot (or other mobile vehicle) turns. The greater the Turning Scrub in a Drivetrain, the harder it is for a robot to turn. Turning Scrub in a basic Drivetrain can be easily managed and minimized in two ways:


1. Make sure that the Wheelbase (distance between Drivetrain wheels) is wider (side-to-side) than it is long (front-to-back):


VEX IQ Turning Scrub


2. Use different wheel and/or tire types to reduce the friction of Turning Scrub:

VEX IQ Turning Scrub