(...) If the CoG is *not* below the centre of the wheel, the vehicle will move. That's how it works. :) Iain (20 years ago, 13-Mar-05, to lugnet.org.ca.rtltoronto)
(...) I think Joe mighta meant "below the line passing throught the wheel COG", which does tend to help with lateral stability. But I could be wrong... WRT the subject of droid wheels, you may be able to get something happening using wheels placed (...) (20 years ago, 13-Mar-05, to lugnet.org.ca.rtltoronto)