Yahoo Autos New Uni Wheel drive tech could revolutionize electric vehicle design
The massive worldwide focus on electric vehicle technology has already introduced noteworthy changes to automobile design, notably due to the flat floor design with one large battery pack popularized by Tesla and thereafter adopted by nearly every other major automaker. The reduction in size of drive components has made the term "frunk" part of our regular vernacular, as well. And now Hyundai and Kia have introduced the world to what they say is the next major paradigm shift in EV architecture: the Universal Wheel Drive System, or Uni Wheel for short.
Basically, the Korean automaker conglomerate has figured out a way to replace the standard constant velocity (CV) joint with an arrangement of gears that reside directly inside the wheel hub. We could do our best to explain the arrangement — the short version: a single sun gear transfers power through a pair of packaged pinion gear arms that can move independently to an outer ring gear in a unique and flexible planetary design — but it makes the most sense after looking at the pictures and especially the animated video that we've embedded just below.
