Engine Adapts to the Bicycle
The Sunstar S03+ is a small motor that fits over the bottom bracket. It is not simply a motor for a specific bicycle, but can easily adapt to any frame. The motor of the Italian Sunstar S03+ is located under the bottom bracket.
One connection leads to the battery and a second one to the center display, mounted on the handlebar and providing battery status and pedal assistance mode information. The third connects to the engine speed sensor, placed on the rear frame. To fit all bicycles, the battery is available in three different models: central, on the rack or under the seat.
The amperage ranges from 2.5Ah to 16Ah, which also reflects the mileage. For example, with the battery on the rear rack (the largest), you can travel up to 95 kilometers in ‘economic’ mode. In the minimal version with the battery under the seat, battery life is a maximum of 20 km.