ADO has co-developed a hub motor with Bafang that sports 3-speed auto-shifting gears. The first model to roll with this system is the Air 30 Ultra city ride, which also comes with a 100-km battery, ...
While automatic gear-shifting for bikes isn't unheard of, such setups typically require batteries that have to be frequently recharged. This is not the case with Shimano's new Q'Auto system, however, ...
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