Many (particularly geared hub motors) produce quite a noticeable hum, particularly under load, accelerating or when climbing a hill. The hum is gear clash that stems from the high frequency electrical pulsing that all hubmotors generate in the process of controlling motor power and speed.
A direct drive hub motor can reverse, the simple way is if you have a controller that supports motor direction (lots of generic controllers have that feature) then just add a switch for reverse.
A direct drive hub motor can reverse, the simple way is if you have a controller that supports motor direction (lots of generic controllers have that feature) then just add a switch for reverse.
Generally speaking, hub motors have proven to be more reliable and durable. Even if your hub motor fails, in most cases you still have a regular bicycle to pedal back home. On the contrary, failure in mid-drive system or bicycle transmission means you are
