The purpose of this video is to explain how you can make your own (mecanum) drivetrain by showing how we built our own and what design considerations we made. I hope you learn something from this and maybe get some inspiration for your own design.
Sorry for the audio distortion by the way. Will fix it in the next video.

Onshape document: https://l1nq.com/CustomMecanumDocument
FRC Team 234 Belt vs Chain study: https://l1nq.com/beltvschain