STePS eBULLITT technical info
Frame T6 heat-treated, 7005 aluminium designed for Shimano STePS.
Fork Chromoly steel with tapered steerer tube.
Kickstand Aluminium with replaceable feet.
Headsets FSA Orbit XII 1”1/8 and 1 1⁄2 tapered 1⁄4
Steerer Arm Chromoly steel with machined fittings and rubber covered balljoint.
Dropouts Aluminium, machined and replaceable.
Motor Shimano Steps 6100:250W, 36-volt. 2.9kg.
Battery Shimano Steps 6100 418Wh BT-E8014
Chainset Crankset Integrates perfectly with motor. 44 tooth chaining.
Computer Multifunctional, information on motor modes and battery use.
Shifter Di2 electric, manual and automatic shifting.
Rear wheel Shimano Steps 6100: Nexus 5 speed Di2 hub laced to Alexrims 36h DM24 rim.
Front wheel Novatec hub, 10mm axle, laced to Alex 36h DM24 rim.
Tyres Schwalbe Marathon eBike optimised. Front 20” / 1.75” Rear 26”/1.75”.
Brakes TRP Slate T4 4 piston caliper with 180mm rotors
Chain Shimano HG-X.
Handlebar 31.6 mm alloy cruiser bar.
Stem 50mm 5 degree 31.6mm, black. EasyUp stem lifter w/ 100mm of adjustment.
Seatpost 350mm, 31.6 inline seatpost. Quick release clamp.
Saddle Original Bullitt Racing Seat from Velo.
Pedals Wellgo fully sealed platform.
Grips Ergo lock-on.
Lights Lumotech front / Secula Rear powered from main Shimano battery.
Please refer to Shimano’s STePS site for further info.
Shimano STEPS 6100 Explained
The STePS eBullitt system includes a 250W, 36-volt electric drive unit, or motor, that will help get you up to speed, but cuts out at 15.5mph (25km/h). You can go faster than that if you want but any speeds over 15.5mph have to be generated by either pedalling or gravity alone. The drive unit produces a maximum torque of 50nm or 70nm on the 8000 series and weighs 3.2kg or 2.88kg on the 8000 series, making it one of the lightest on the market.
The current incarnation of the Shimano STePS system has a 416W-capacity lithium-ion battery. The battery is mounted on the frame’s steerertube, balancing the weight. It’ll take four hours to give the battery a full charge but only two hours to fill it up to 80 percent. Battery life is dependent on mode selection, in Normal Mode the average is 80km, this can vary due to temperature and topography.
Another advantage of STePS over other systems is the combination of electric gear shifting, powered by Shimano’s tried and tested Di2 system. This pairs the Bullitt’s shifting with the main battery for seamless integration through all aspects of the bike. Di2 updates and diagnostics can now be made wirelessly via bluetooth with Shimano’s eTube app. With the shifter cable housed and sealed, the system is incredibly durable and user friendly and multi shifts can be made effortlessly time and time again. One of the toggle buttons on the shifter can also operate the bike’s front light.
Included in the STePS system is a bar-mounted display that shows all the usual info you’d expect with a bike computer, including speed, trip distance, elapsed time and so on, as well as what mode the STePS system is currently in, the estimated range left in the battery and what gear you’ve selected. The computer is more than just a passive tracking device, however. It analyses the data you generate as you ride the bike and will use this to increase the accuracy of its projections for the estimated range left in the battery.
As well as taking the effort out of pedalling, STePS has intelligent shifting too. With the Nexus 5 hub-gear set-up you can opt for a ‘manual’ version and change gear by pressing buttons, or go choose the ‘automatic’ option and let STePS decide when to change gear for you. The automatic version uses a ‘Symptomatic shifting system’ that senses your cadence and power output, and shifts gears to match them. You can fine-tune the system’s sensitivity so that the shifting occurs at specified cadences. And should you come to a stop while using the system, it’ll automatically shift down so that you’re in an appropriate gear when you set off again.
Incorporating the Shimano STePS system into the Bullitt platform has resulted in the fastest, lightest and smartest cargo bike currently available. Using proven components, frame materials and utilising our accessory line and a decades worth of experience building cargo bikes, we have crafted a bike that is so fun and simple to use.
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