So you are fascinated with e-bikes but are not ready to upgrade? The add-e is an innovative solution that lets you transform your bike into an e-bike. It can be easily mounted on your bike, allowing you to use it as a regular or electric bike. Just mount the drive unit, attach the battery, switch it on, and you are ready to go.
This friction roller drive lets the wheel of your bicycle to be driven without a gearbox. The add-e is super efficient and lightweight. As you can see in the above video, it is almost invisible. Yet another interesting Indiegogo project.