Does a 6 motor drive usually need a PTO?

You don’t need a PTO to build a 6-motor drive, but if you want to connect it to something else, go ahead. What you power with your PTO is up to you. (Though, as a tip… Whatever you power with your PTO should probably be something that usually you use when the robot is not driving around; this would allow you to still use the 6-motor drive as a 6-motor drive).

Also…

Most PTO-s utilize pneumatics to function.

And take a look at these threads regarding the not new 5.5W motors: :slightly_smiling_face: