Just found these videos on YouTube. They show how the NuVinci hub works to change gear ratios.
YouTube - NuVinci Bicycle CVT
YouTube - Fallbrook CVP Technology
YouTube - John's Journal - This CVT's a Ball
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YouTube - NuVinci Bicycle CVT
YouTube - Fallbrook CVP Technology
YouTube - John's Journal - This CVT's a Ball
![.trk .trk .trk](https://motorbicycling.com/images/smilies/Trk.gif)
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