VIRTUS, Sunstar presents the first modular E-Bike drive system

Modular E-Bike drive system with detachable mid-mounted motor, universal for all types of frames. 




Bicycle or E-Bike? "Both!" says Japanese-Swiss drive manufacturer Sunstar, who will present a modular system with detachable bottom bracket motor as a world first at the leading bicycle trade show Eurobike (27-30/08/2014). The core of the drive system, which will be introduced under the name VIRTUS as a prototype at the trade show, is a mid-mounted motor that fits on any conventional bicycle frame and can be detached within a few minutes and swapped between bikes. The only requirement is the installation of a special multi sensor controller which can also be obtained separately. This sensor not only measures torque, pedaling cadence and crank angle, but it also acts as the controller and transmits the data wirelessly to a Smartphone – even when no motor is fitted. In connection with various battery types and accessories for off-road use, any bike will become an E-Bike or ergometer.

With Sunstar VIRTUS, customers no longer have to make a decision between bicycle and E-Bike because conventional and special "E?Bike ready" constructed bicycles can, in the future, be transformed in accordance with the customers' requirements at all times to an ultramodern E-Bike. Once the basic modules are fitted, the motor and battery can be moved within minutes from one bicycle to another – without special tools or the help of a workshop. The VIRTUS system also offers new possibilities in the service area: as it is possible to immediately exchange individual modules if damaged (even up to the replacement of the motor itself), cyclists can use their E-Bikes straight after the repair without the long waiting times usually involved.

Technical specifications:
Motor: 250 W, 55 Nm, DC brushless Max. design speed: 25 km/h Weight: 3,2 kg Support Mode: 4 modes 3 in 1 Sensor: Integrated torque-, cadence- and crank angle sensor; external speed sensor

Battery:
3 different types (36 V): rear rack (11 Ah / 400 Wh); down tube upload (11 Ah /400 Wh); down tube bottom (8 Ah / 300 Wh) – combined 700 Wh for max. range