I'm working on a stand-up mobility walker. I'd prefer to use hub-motors, and keep the drive train dirt simple - dual motors, with tank-style steering.
I'm thinking of two different approaches - both of which start with a walker and attach a platform to stand on.
Approach 1: Replace each of the walker's front wheels with a combination tire/wheel/hub motor - with perhaps a 10" diameter.
Approach 2: Use a dual-motor electric skateboard truck underneath the platform.
The thing is, that I can't seem to find any information about the operating characteristics of hub motors (or really any motors) at low speeds (2-4mph). For a skateboard truck, that translates to 200-400rpm. The things can obviously run at those speeds - electric longboards will accelerate from a standing stop, climb inclines, etc. But... all the electric characteristics and design advice focuses on designing for top speed.
So... anybody have any information on power drain for, say Maytech e-skateboard hub-motors operating at 100rpm; optimal battery voltage; VESC configuration - that sort of thing?