1) Never wear only said motor, life years, two-year warranty, not that controller! Brushless and brush is different from the commutator brush placed within the motor, and brushless motor is placed outside, so the brushless motor system is actually a "motor" and "electronic commutator" two part of the composition. Brushless motor part of the existence of a "never wear" of the property, and brushless electronic commutator is a high failure rate components, as mentioned above a variety of failures occurred on the controller . Currently, many customers make a brushless motor to the salesman, "Warranty 2 years, 5 years or 10 years' commitment, but the controller only year warranty, the replacement of a controller cost up to $ 200. In fact, if the count controller maintenance brushless system, its maintenance cost will greatly exceed the number of brush replacement motor brush cost. Once the withdrawal of individual manufacturers warranty on the controller, the use of consumer costs will increase rapidly.

2) The system reliability and performance of the contradiction: Needless to say, the reliability of brushless motors and the maximum operating current of a great relationship, reduce the maximum operating current will improve reliability, but if a significant reduction in the maximum operating current, it will bring Golf Cars to run brushless fatigue, poor performance, the negative impact of consumers do not welcome, brushless no market. This is indeed a brushless system placed in front of a very serious issue.

3) Brushless need to talk more "waterproof": I only once saw some of the promoters of brushless motors brushless hub will soak in the "fish tank" in turn, to show off its "amphibious" jobs "excellent" feature, in the water, the brush motor difficulties do exist for the defect, but eletric bikes are not submarines, why in the water driving it? This appears to have a knowledge of the presentation is a lot to read! In fact it would be a "magic" because brushless electronic commutation, the presenter did not change to the electronic device is also placed in the water, if the entire controller is also on the tank, brushless motor situation even worse than the brush. In fact, both brushless or brush are used as a NdFeB permanent magnet material that has many good features, but it is one of the biggest drawback is poor oxidation resistance, placed in the water is undoubtedly the NdFeB placed among the worst of conditions, will result in motor failure due to oxidation of life. In addition, a large number of brushless motors in silicon steel, will also rusty, but more about water, for this demonstration, although they could mislead some viewers, if they tell the truth does not make sense.