Crank or mid-motor
The alternative to a hub motor is a crank or mid-motor. The main advantage of a crank motor is that it handles hills better than a hub motor because it drives the front crank mechanism and hence the chain. In doing so, it takes advantage of the bikes gear system which dramatically improves the motor's efficiency.
- The crank motor is more efficient than the hub motors and tends to be better on hills, where it is equivalent to a much larger hub motor
- It tends to be faster due to it's operation through the bike's gears
- Crank motors are more expensive than hub motors