Generally speaking, because brushless DC motor has no friction loss of mechanical commutation, gearbox consumption and speed regulating circuit loss, the efficiency can generally be higher than 85%. However, considering the highest cost performance in actual design, in order to reduce material consumption, it is generally designed to be 76%. The efficiency of the brush DC motor is usually about 70% due to the consumption of the gearbox and overrunning clutch.

Advantages

1.Low noise, <50dB

2.High Torque 35N.m3.Waterproof,IP654.Certified,Rohs/CE

4.Match with different size of rim wheel(16" 18" 20" 24" 26" 700C 28" 29")

5.Different color aviable (Black or silver)

6.Different spokes color (Black/Silver)

7.36 spokes