King of an interesting little tidbit to explain how the NuVinci hub works. I had no clue. I wonder about reliability over the years, but then again, it's not priced like a Rohloff. Between high and low, there is infinite adjustment. Interesting idea. I'd love to hear what users of the hub think of it.
Apparently the idea stems from some plans Leonardo DaVinci cooked up in about 1490.