[EricH]

Originally Posted by Cyberphil

By this, I meant one independent motor/gearbox driving 2 parallel wheels. I knew what I was talking about, I just did not convey it specific enough.

You mean something like the Nonadrive, but with mecanums instead of omnis?

Nonadrive: Really good drive system, but you darn well better know what you're getting into about 3 years before you even think about trying it.