Revolution in Bottom Bracket Motors?
Based on an intelligent gear sensor mounted on the shifting cable, it cuts off the motor drive when the rider activates gear shifting. It eliminates noisy derailleur shifting caused by chain over straining.
This new technical solution was developed in the Czech republic and is called ‘Gear sensor’. Even in combination with the front derailleur it allows smooth shifting if the e-bike is equipped with a double/triple chainwheel BB motor. The processors enable individual time setting and adjustment for micro-movement sensitivity of the inner cable, to avoid motor cut off caused by cable vibration.