Electric bicycle uses brushless motor will reduce the efficiency
Currently the motors being used by electric bicycles manufacturers generally are brushless gearless motor. The cost of its speed control system should be higher than the cost of brush motor speed control system, but the brushless motor controller is easy to break during the using process. Electric bicycle equipped with a brushless motor can play its best efficiency when the speed up to 35 km / h or the above, But as we also know electric bikes are managed as motor non-vehicles, thus their driving speed must below 20 km / h, therefore it will reduces the efficiency when brushless motor was selected by electric bikes. The main reason why it is used is because of the low noises, brushless motor uses electronic circuit for commutation! There will be detection device to detect the polarity!
