For the first time, we were able to extensively test the new Shimano MTB Steps E-drive (E8000) in a Stevens E-Scope+. In the Stevens hardtail with Plus tyres, we tortured the drive unit over hill and dale.
The key data of the new Shimano MTB-Step is comparable with the e-drives of the competition:
- 250 watts continuous power
- 70 Newton metres of maximum torque
- Support up to 25 km/h
- Three support levels: Boost/Trail/Eco
- Pushing aid
- 500 watt hour battery
- coloured mini display
- Firebolt thumb switch
The improvements are in the details and the riding test shows that Shimano has got a lot of things right in the set-up. The first thing that catches the eye is the extremely compact design. Compared to some competitor drivetrains, the MTB Steps has slim dimensions. This has two major technical advantages: The frame builders get more space. This can be used on e-mountainbikes to optimise the rear suspension kinematics and enables shorter chainstays. For the rider, the Q-factor, i.e. the horizontal distance between the pedals, is reduced to 175 mm (manufacturer's specification). The drive also has a less prominent influence on the bike's appearance.
The switch-on button for the system is located on the battery. A small display next to the stem provides information about the selected gear and current speed. The range, average speed, distance and maximum speed can also be viewed using the one-button operation. The gears can be changed from the handlebars using the Firebolt thumb shifter. The handling of the MTB-Step is intuitive and the switch is clearly labelled. In our opinion, the bright beep that accompanies every gear change is unnecessary. However, this signal can presumably be deactivated by software in the future. If you hold down the outer thumb switch when stationary, the push assist is activated. This seems to make a lot of ergonomic sense, but this feature was not yet functional on the test bike.
How the Shimano MTB Steps E8000 rides
The low noise level of the system is noticeable from the very first pedal stroke. Even under load and at higher speeds, there is no high-pitched whistling to disturb you. Nevertheless, a gentle humming accompanies the ride. At the highest support level, slight vibrations were noticeable when the motor was operating in the partial load range - i.e. when it was not delivering full power.
The first two driving levels "Eco" and "Tour" are relatively close to each other. In the Tour setting, the rider still has to contribute a fair amount of power. Boost mode lives up to its name. It pushes forwards very powerfully. The power is applied spontaneously and remains easy to control. A short press on the pedal is all it takes to activate the assistance. The power delivery is very harmonious in all modes, so that traction is not lost even on steep terrain on loose ground. Only the disengagement of the drive, i.e. when the rider stops pedalling, is still a little choppy and is acknowledged by the bike with a short jerk. The motor is quick to rev and also copes well with a high cadence. Only at low cadences does the power seem slightly weaker. In this way, the drive feels very powerful.
Of course, Shimano utilises the possibilities of its own electric drive for system integration: Shimano 10- and 11-speed cassettes can be used and the Di2 electronic gear system can also be combined with the drive. A dedicated chain guide keeps the chain in position. System settings can be made via Bluetooth or ANT standard using the E-Tube software with a smartphone, tablet or PC.
Test summary of the Shimano MTB-Steps E8000
The MTB Steps E8000 drive from Shimano cuts a very fine figure. The entire system can be perfectly integrated into the bike and impresses with its simple and ergonomic handling. It pushes powerfully on the trail and the power delivery is very harmonious. This drive should therefore be a real alternative to the current systems from Bosch, Brose & Co. This is already evident from the fact that numerous manufacturers have announced that they will have e-mountainbikes with the E8000 in their programme for 2017.
