Friction Disk Variator

Input: the green shaft carrying a green friction roller.
Output: the yellow shaft carrying a pink friction roller.
Each roller can move along its shaft independently by turning its corresponding screw.
Velocity of the output shaft depends on contact positions of the rollers with the disks.
The friction forces at contact places are created by red springs.
Using two friction disks doubles transmitted torque.
Input and output shafts are coaxial.

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