When do I need to do this(when you set up the drivetrain and have a gear ratio option)? Are there any build instructions for more complex drivetrains for the education kit.
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This is when you have setup in a different gear ratio for your drivetrain. So the “drive forward 200mm” will be accurate.
I would suggest to take a look at this video from this STEM lab VEX IQ - Tug of War - Lesson 3: Using a Gear Train - Learn
And a couple build instruction can be found here (only for gears, not the complete system): https://kb.vex.com/hc/en-us/articles/360039539291-Using-VEX-IQ-Plastic-Gears-Sprockets-and-Pulleys
Both of these resources should be helpful to you. If you need more support / have a specific questions, feel free to book a 1-on-1 that focus specific on gear ratio. We’d be happy to walk you through everything.
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