Can anyone explain/give me a link as to how that bike without a chain works?
probably an enclosed belt drive; the shape of the drive enclosure would allow this (or even an enclosed chain), but seems unsuited to a shaft. At the outside, it would be feasible for the enclosure to house a worm drive, but that would be extraordinarily improbable.
probably an enclosed belt drive; the shape of the drive enclosure would allow this (or even an enclosed chain), but seems unsuited to a shaft. At the outside, it would be feasible for the enclosure to house a worm drive, but that would be extraordinarily improbable.