I have a front geared brushless hub fitted into my existing bike. Freewheel.
I often feel there's a little friction when taking my thumb off the throttle and pedal. Must be psychological, as I was "pull along" by the motor a moment before.
However, at one time, I wasn't able to use my electric motor for a week (warranty repair on my charger ) , used the bike unassisted and I didn't notice the friction at all.
Warning: In practice, I find myself using the motor rather than pedalling uphill no matter how easy the hill is. My heart rate doesn't increase much. . . . . But my intention is good though
