Rad Power’s system uses large, orange arrows on the display to tell you when the directionals are on, and which direction is being signaled. It takes a little while to get used to shutting them off, since you do so by hitting the same switch that activated them—hitting the opposite switch simply activates the opposite turn light. But the display at least makes it easy to tell when you’ve done something wrong.
In general, the display is also bright, easy to read, and displays everything you’d expect it to. It also comes paired with enough buttons to make navigating among settings simple, but not so many that you’re unsure of what button to use in any given context.
One last positive about the electronics: there is a torque sensor, which helps set the assist based on how much force you’re exerting on the cranks, rather than simply determining whether the cranks are turning. While these tend to be a bit more expensive, they provide an assist that’s much better integrated into the cycling you’re doing, which helps with getting started on hills where it might be difficult to get the pedals turning enough to register with a cadence sensor.
On the road
All the stats in the world can’t tell you what it’s going to be like to ride an e-bike, because software plays a critical role. The software can be set up to sacrifice range and battery life to give you effortless pedaling, or it can integrate in a way that simply makes it feel like your leg muscles are more effective than they have any right to be.
The Radster’s software allows it to be switched between a Class 2 and Class 3 assist. Class 2 is intended to have the assist cut out once the bike hits 32 km/hr (20 mph). With a Class 3, that limit rises to 45 km/hour (28 mph). Different states allow different classes, and Rad Power lets you switch between them using on-screen controls, which quite sensibly avoids having to make different models for different states.
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