1. Crank Shaft Electric Motor with Own Exclusive Patent 2. More Beautiful, more logical, more energy-saving 3. DC Brushless 1. Crank Shaft Electric Motor with Own Exclusive Patent 2. More Beautiful, more logical, more energy-saving 3. DC BrushlessAdvantages of the motorAll drive shaft,riding more easilyBrushless, Long life (bearing’s life), maintenance-free Small volume, Light weight, Great power ...