Dealing with bikes more monster and fishlike.the more it is used. When it comes to an urban commuter bike, simple is often good because it means less can wrongit's not a coincidence that singlespeed bikes are a common sight on city streets. E-bikes are quickly gaining traction in the commuter category because, among other things, they allow you to arrive at your destination quickly and without a lot of sweat. With that in mind, Propella created its Single-Speed, an urban-inspired Class 1 e-commuter bike with a 250 watt Bafang hub-drive motor to make that commute just a little bit quicker and easier.