brushed v brushless

[fatts]

What are the pro,s and cons over these two motors please
regards
Fatts

 

[Deleted member 4366]

Brushed motors have carbon brushes and a commutator that wear out in time. Brushless ones don't. Brushless motor controllers need to be more sophisticated in the way that they work, so cost a little more.

 

[flecc]

Brush motors of the types used in e-bikes are often more "peaky" in their power delivery characteristics, the maximum point often being quite narrowly defined as in the old Powabyke motor at 7 mph and the standard Heinzmann at 8 mph. In both cases the 26" wheel legal versions.

Our brushless motors have a slightly lower peak for a given comparable motor but a better spread of the high power region which is more useful. This is because the controller which delivers the phase currents can tailor it's current delivery periods in a way that a commutator feeding brushes cannot.

For these reasons and the lower incidence of maintenance that d8veh mentions, brushless have largely taken over.
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