Re: Hello and help needed for father....
The rest of the guys might know but as far as I know there is no electric drive friction kit, just gas. The majority of electrics are hub drive:you replace the stock hub with a motor.. The gas option would most likely be the best option for your dad, especially using a "girls" bike. When they are off and disengaged you get no drag at all above and beyond the normal bike and still allow pedal assist. Range is much further with gas and the friction motors are of a much higher quality than the China 2 stroke motors. A good many come with Japanese motors including 4 stroke motors, probibly your best option.