E-Performance: If you look at the 2019 model year, there will be more evolution than revolution when it comes to e-bikes. Batteries are better integrated, motors are smaller and driving modes are better coordinated. But if you look at the drive in detail, there is another small revolution. This is exactly what becomes clear with the Brose Drive S Mag on the Bulls E-Stream Evo AM4 2019.
Brose Drive S Mag: First drive made of magnesium and even more power
Until now, e-bikes on the trail could always be quickly distinguished from conventional mountain bikes by the massive drive unit and the battery attached to the down tube. However, the drive components are now so well integrated that this only becomes clear on closer inspection and no longer just when driving past. The compact design of the Brose Drive S Mag and the flexible integration options support bike manufacturers in precisely this challenge: integration. Thanks to an innovative magnesium housing, it is 15 percent smaller and 500 grams lighter than the other variants in the Brose Drive product family, thus achieving an even higher power density. Development did not stand still with the battery either. Bulls uses a 2019 watt model for the 750 model, which is seamlessly integrated into the down tube. Compared to the previous year's model, this even increases by 100 watts. With conventional e-bikes, for example, after about 1000 meters of altitude, you constantly look at the remaining range. The Bulls E-Stream Evo AM4 is different, because with 50% more power, longer tours are no problem. And if you run out of juice, the e-mountain bike continues to pedal without resistance thanks to the Brose Drive S Mag. This resistance-free decoupling is achieved by two independently acting freewheels. A special novelty, the Bulls E-Stream Evo AM4 2019 gets an additional level of support with the new Brose Drive S Mag: the new Flex Power Mode. Brose combines two new software features here: With the torque and speed-controlled Cadence Power Control (CPC) support, e-bikers can use up to 30% more power at high cadences and thus call up up to 410% support. The newly developed pedal-dependent support Progressive Pedal Response (PPR) delivers an even faster and more lively response.
Bulls E-Stream Evo AM4 2019: Well thought-out and well-coordinated equipment
The Bulls E-Stream Evo AM4 2019 is well thought-out and rock-solid equipped so that you don't just have a good form while climbing. A suitably coordinated chassis from Fox provides the necessary reserves off-road. At the front is a Fox 36 Float Rythym Boost with 150mm of travel with low breakaway torque and good response. The rear kinematics also release 150mm of travel, which guides a Fox Float DPS Performance damper. The tires from Schwalbe are responsible for sufficient grip on loose forest soil, the Magic Mary SnakeSkin shine with a deep profile with good self-cleaning, but the sidewall is also reinforced with SnakeSkin technology and is therefore well protected. The entire system is delayed by a four-piston brake system from Magura. The brake calipers of the Magura MT5 grip a 203mm disc at the front and a 180mm disc at the rear. The resulting braking force can still be dosed well. There are also small, interesting details on the Bulls E-Stream Evo AM4 2019 when it comes to accessories. With the MonkeyLink system, electronic accessories such as lights can be quickly and easily attached to the pre-assembled connections, and a FidLoc bottle holder is already attached to the down tube. The internal cable routing in the aluminum frame makes the bike look tidy and chic.
Conclusion: Coherent concept with many optimizations
The Bulls E-Stream Evo 2019 promises a lot with the proven Brose technology and its technical data sheet. Cleanly tuned drive, optimized chassis and downhill-oriented geometry and equipment. We are looking forward to the first test kilometers on the Velomotion home trails.
Brose website: www.brose-ebike.com
Bull's website: www.bulls.de