B20 DC brushless motors have 2 series: B20-30, b20-40 with different turns, RPM/v and max amps.B28 DC brushless motors have 3 series: B28-47, b28-57 and b28-67 with different turns, RPM/v and max amps.B36 DC brushless motors have 3 series: B36-50, b36-60 and b36-74 with different turns, RPM/v and max amps.Definition:B20-30-12s:20 represents diameter in mm,30 represents length in mm,12 represent turns, s-short.
B20 DC brushless motors have 2 series: B20-30, b20-40 with different turns, RPM/v and max amps.
B28
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