MOCHUB - "An elegant piece of Lego gear Art. Basically a Continuously Variable Transmission (CVT) operating by converting a variable oscillation into rotation." Watch the Video on mochub.com for a better feeling
Be Infinitely Mind-Blown With This Lego CVT Example Of Infinite Ratios | RojakDaily
Here's How A CVT Transmission Works, Using Only Legos
Lego Technic Compact Automatic CVT Gearbox with Instructions - YouTube
CVT from LEGO with explanation, most simple LEGO CVT - YouTube