What electric motorcycles good opening?

The most important parts of electric bicycle motors, a motor bike basically determines the car's performance and quality. At present, a large electric bicycle motors are used efficiently rare earth permanent magnet motor, which mainly divided into high-speed brush + gear motor, brush motor low speed and low-speed brushless motor three, currently at a high speed brush + gear motor performance, the most well, the price is expensive; low speed brush motors to be cheaper, but the performance to be worse; brushless motor controller because of extremely high quality requirements, listed brand much, the best selection of brand when consumers buy.