The impossible drivetrain

Artist concept

This drivetrain eliminates the front and rear derailleur, the idler the cassette and chainring along with associated parts. Replacing these parts are a number of disks controlling and engaging the chain, so the chain expands and contracts about these disks providing an infinitely variable transmission. Using a bicycle chain without a derailleur to change gears let alone providing a ratio dense transmission is considered irrational (by definition). And for the chain that only sees two dimensions impossible.

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