The NuVinci hub is a unique internal gear hub in that it utilizes a continuously variable planetary (CVP) transmission. This means that the hub does not have specific gears but instead can be dialed in to any particular gearing in it’s capable range. You can think of it sort of as an analog radio tuner as opposed to a digital tuner with its particular increments. It is developed by the company Fallbrook Technologies which is headquartered in San Diego California.
There are currently two models of the hub that has been produced, the N171 and the N360. The N360 is the newer of the two and was released in the Fall of 2010. The differences between the N171 and the N360 include:
- Over 30% Lighter (weighing in at 2450 grams – ~5.4 pounds)
- 17% Smaller Diameter
- 360% ratio range (up from 350% for the N171)
- Less Shifter Rotation (3/4 turn from low to high as opposed to ~2 1/2 to 3 turns on the N171 shifter)
- Phil´s Velo Blog has already a lot of posts concerning the NuVinci hub. (Mostly in German, English further down on the page)
- A comprehensive review of the N171 by Utah Trikes.
Wheel Building Video
Installing the Hub Interface
Installing Shift Cables and Hardware
Fitting the Rear Wheel
Disconnecting the Rear Wheel
Replacing Shifter Cables
Resetting CVP Into Full Overdrive