EMTB: Until now, the Shimano Steps system was not approved for mountain biking. What can the new E8000 version do better?
Ben Hillsdon: First and foremost, the E8000 was developed specifically for mountain biking. This means that the overall characteristics, i.e. performance, power delivery, dimensions and robustness, were selected in such a way that the end result is a real mountain bike, only with electric assistance. In detail, the firmware has been optimised so that the power is available at exactly the right level at both high and low pedalling frequencies, so that it is available without delay as soon as pressure is applied to the pedals and stops again just as immediately when the pressure is removed. These are all crucial characteristics when biking on demanding trails.
Added to this is a compact, simple, colour-coded display that is quick and easy to read and provides a tidy cockpit. The Bluetooth connection with the E-Tube system enables fine adjustments to be made directly on the trail using the smartphone app. As the higher power required for MTB use would result in a shorter range, we have increased the battery capacity. The compact dimensions, which allow for shorter chainstays, and the Q-factor common on normal mountain bikes contribute significantly to the natural riding experience.
What are the strengths of the new design?
The main advantages have already been mentioned. But a key advantage of Shimano is our integrated system design. Each component has been developed to work in perfect harmony with all the other components in the respective system. According to the motto: the whole is more than the sum of its parts. From the drivetrain to the shifting system, everything has been developed as a unit that guarantees the rider the best possible performance and reliability in precisely this system.
What are the biggest difficulties in designing an e-drive for mountain biking?
The biggest challenge is undoubtedly to make the system resistant to water and dirt. Our many years of experience in Di2 development helped us here, showing that Shimano's electronic systems are optimally protected against all environmental influences. In addition, it is also important to design the power and torque output of the motor in such a way that it is best suited to the typical MTB requirements. In addition, it was also the self-imposed requirement to raise the bar once again in terms of system engineering and to perfectly integrate the shifting and drive systems that represented a central challenge during development.
How long did it take to develop the Steps E8000 drivetrain?
We first introduced Shimano Steps components for the urban sector back in 2013. From that moment on, we intensively investigated how we could expand the system's areas of application.
Will there also be a 45 km/h version or is the E8000 tailored to 25 km/h?
The Shimano Steps E8000 system was developed for assistance up to 25 km/h.
What software settings can be made by the dealer/end customer?
Consumers and dealers can use the E-Tube software to change the display settings and the information shown, for example. Consumers and dealers can also use E-Tube to change the settings of their electronic Di2 shifting systems, for example the function assignment of the individual switches or the multishift speed.
