What are they?
This is a kit where the motor is fully enclosed and bolted onto the frame of the bike. It adds power directly to the crank as you pedal and connects to the drive chain.
What are the benefits?
- Keep the weight of the bike low and in the middle of the bike
- More efficient; directly drives the crank meaning you get more range from your battery
- Allows you to go up the steepest inclines and pull lots of weight
- Easy to change a tire because your wheel quick release isn’t affected
- More quiet than hub motors
What are the downsides?
- More expensive than hub motors
- You’ll have to pedal slightly harder to get power assistance vs a hub motor
- Limited to having one chain ring up front (you will lose gears if you have 3 chain rings up front)
- More wear on the drive chain increasing frequency of needing to replace the chain
- Motor is enclosed and will need to be sent to specialist workshop in case of breakdown
- Motors tend to be heavier than newer style hub motors
- Care needed when changing gears to reduce throttle