E-STREAM EVO 4 Hard Tail 27.5 PLUS
▶ DRIVE UNIT
With a whopping 90Nm BROSE toque on tap it has a huge power advantage over its non-Brose rivals.
The beating heart of this BULLS is the peerless BROSE S Drive Unit. For 2018 the Brose has new software giving more low-speed torque and smoother power delivery across all speed ranges. Its main ingredients are aluminum, magnesium, experience, enthusiasm and …helical epicyclic gears! Designed in Germany, its made there too.
Where other well known e-bike motors are built to a price point, the Brose S is designed and manufactured to a quality standard, incorporating precision engineered helical epicyclic gears. These are much more expensive to manufacture but offer dramatic performance and wear rate improvements over the cheaper spur gear tooth profiles that the completion use.
In the simplest terms spur gears transfer power from the driving gear to the driven gear via only one or two teeth at a time, whereas with helical gears power is transferred by three connecting teeth at a time. This results in less wear, less noise, less friction and a smaller and lighter drive unit.
Despite its small physical size the BROSE S produces a market leading 90 newton meters of torque. It does this quietly, reliably and without fuss. The company’s sensor concept is the only one of its kind on the market today: it measures rider pedal force no fewer than 420 times a second, delivering smooth, vibration free assistance.
Brose Drive Technology is a division of the Brose Group, one of the most innovative and successful suppliers to the international automotive industry, employing some 22,000 employees – 2,500 of them engineers – at 57 locations in 23 countries around the world. Their annual turnover exceeds €5 billion. Last year Brose manufactured 100 million electric motors. They know what they’re doing.
Decades of experience specialising in mechatronic systems for the automotive sector mean they’re perfectly placed to produce this innovative e-bike drive unit. Development and production of the Brose e-bike motor is carried out entirely in-house at their Berlin engine plant, where a dedicated team of engineers design, build and test the system at their purpose built e-bike center of excellence .
The removable Li-Ion battery is integrated into the aluminum bottom tube, ensuring the lowest possible center of gravity, and at a class-leading 650Wh the battery will drive you further than any other electric MTB in it’s class. It’s not just me! Many of our customers have had first hand experience of the Brose motor efficiency – of course the range between re-charges on a BULLS is greater than any of its competitors because it has a higher capacity battery, but that does not explain how a BULLS with 30% more power than its rivals can run flat out for so long on one charge. Clearly, much of its range advantage is down to the efficiency of the Brose drive unit.
▸Integrated dot-matrix display
▸Excellent readability in sunlight
▸Adaptive display illumination
▸State of charge
▸Software update via USB
▸ Bluetooth connection to Smartphone
The Shimano Deore XT gear set provides accurate shifting in all conditions. The Direct Mount system allows more space around the rear dropout resulting in easier rear wheel removal when required.
▶ Dérailleur Shimano Deore XT M8000
The new Shimano Deore XT M8000 dérailleur blend powerful performance with precise shifting.
▸Consistent performance in all conditions
▸Accurate chain position in every gear
▸Low-profile design keeps dérailleur safely away from trail obstacles
▶ Shifter: Shimano XT SL-M8000
▶ Rock Shox Revelation RC Boost Solo Air
The RockShox Revelation has evolved to tackle the most challenging trail and enduro rides. The Revelation RC DebonAir Forks feature a chassis that is descended directly from the legendary Pike forks including 35mm upper tubes for incredible stiffness in the roughest terrain. With 2.8″ tyre clearance, these forks are up to date with the latest tyre trends and the DebonAir spring ensures increased sensitivity for maximum performance.
▸Remote 2 position Open/Firm lever
▶ Magura MT5 front, and MT4 rear
Huge braking performance and low weight doesn’t have to be expensive! The braking power of 4 pot callipers, adapted from Magura’s motor sport experience, gives you all the fine control and maximum stability you will ever need, even on the most difficult terrain, and on long descents.
This electric mountain bike has an inductive transfer Monkey Link system built-in! Monkey Link makes it possible to fit a range of accessories such as bicycle lights and mudguards with built in lights to the bike with no additional electrical connections – accessories such as front and rear lights are powered from the electric bike’s main battery via electromagnetic Inductive transfer.
|Fork||Rock Shox Revelation RC Boost Solo Air|
|Drive Train||Brose S|
|Rear Derailleur||Shimano XT|
|Front Derailleur||himano Deore XT FD-M786DT|
|Shifters||Shimano Deore SL-M8000|
|Cassette||Shimano SLX CS-M7000 11-42T|
|Brakes||Magura MT5/MT4 hydraulic|
|Rims||BULLS AS-35P ECCTRIC tubeless ready|
|Wheel size||27.5 PLUS|
|Tyres||Schwalbe Rocket Ron SnakeSkin Addix Spgrip 70-584 (27,5 x 2.8)|
|Extras||Powerpack: 37V/17,5Ah/650Wh / 3 modes: Eco, Tour, Sport / Charging time: approx. 3,4 hrs to 80%, approx. 5 hrs to 100%|
Specifications correct at product launch date and may vary during production year.
BULLS make 56 different models of electric mountain bike, each designed to meet a specific need – if you would like us to help you find the perfect BULLS for you please email or call Clare or James on 0208 960 9848 (London), Keith on 01728 830 817 (Suffolk), or Martin at our Midlands branch on 0116 3666 980 (Leicester).