[EricH]

Originally Posted by 75vs1885

But bending two pieces exactly the same could be difficult if a team doesn't have access to the necessary resources to make an EXACT copy, that why I'd opt for box or channel all around

And those resources are a break, a shear, and a good set of measuring instruments, particularly when you're just bending yourself a C-channel. If a team is designing in sheet at all, for a component as major as the drivetrain, and doesn't have those resources at their disposal, they really need to be rethinking their design. But if they DO have those, which they probably do, then they could bend two, three, four, as many pieces as they needed to in order to build their robot and its twin if they were building one of those.