Coming this autumn is an all-new light-weight eBike motor from Bosch. Weighing a claimed 2 kg, the Bosch Efficiency Line SX gives a mid-level help eBike motor suited to Gravel eBikes and City eBikes, and naturally the quickly rising section of light-weight eMTBs.
As in comparison with the Bosch Efficiency Line CX and Efficiency Line CX Race motors that ship a most torque of 85 Nm, the Bosch SX motor gives a much less aggressive 55 Nm. That’s to not say it wont in future discover a house on extra aggressive eMTBs; solely that it has a extra conservative strategy to energy consumption, complementing the efforts of the rider in a extra light rider effort:help ratio.
Bosch Efficiency Line SX eBike Motor
Certainly, Bosch says the Efficiency Line SX motor delivers “a extra pure driving sensation” than its extra highly effective 85 Nm sibling. That stated, it has an enormous peak energy output of 600 Watts. In the meantime, the TQ-HPR50 – of Trek Gasoline EXe fame – boasts a peak energy of simply 300 Watts. Nevertheless, the 2 are equal by way of their rated steady energy output, which is available in at 250 Watts.
The Bosch Efficiency Line SX system has a claimed weight of 4 kg. The motor itself weighs round 2 kg, and is thus ~750g lighter than the complete energy Efficiency Line CX Race providing. The 400 Wh CompactTube battery weighs 2 kg, bringing the system weight as much as a claimed 4 kg – that features the Mini Distant and the System Controller. Regardless of its light-weight magnesium casing, the motor itself is just not fairly as gentle because the TQ-HPR50 which is available in at 1.85 kg.
A brand new PowerMore 250 Wh battery brings vary extension in a bundle the scale of a water bottle. This weighs a claimed 1.6 kg, bringing the load of the Bosch Efficiency Line SX system at its most 650 Wh capability to round 5.6 kg.
In fact, as is the legislation right here in Europe, the Bosch Efficiency Line SX motor stops offering help at speeds over 25 km/h. Nevertheless, key to the declare of its capability to offer a pure driving sensation, this motor gives round 50% much less pedaling resistance (or drag) as in comparison with the Efficiency Line CX motors.
Doubtless including to the extra pure experience really feel is a narrower Q-Issue. Whereas the full-power Efficiency Line CX motor gives a wider stance of 175mm, the “new sealing idea” and slender cranks convey the Q-Issue of the Efficiency Line SX motor all the way down to 160mm.
Whereas this lighter SX motor was designed with a spread of eBikes in thoughts, from Gravel eBikes, to light-weight eMTBs, in addition to City eBikes, Bosch has positioned a number of emphasis on what the brand new system can supply to the drop-bar contingent.
For instance, they’ve designed a brand new Mini Distant Dropbar Controller with a 31.8mm clamp diameter meant to be operated from the tops solely.
Additionally notable for Gravel eBikes is the addition of a “Dash” mode, along with the tuneable Tour+ and eMTB modes that riders of any Bosch-powered eMTB can be conversant in. That is stated to “assist eGravel bikers to rapidly attain and keep a excessive pace. On high-cadence sections the brand new driving mode helps them disproportionately to their very own energy: the quicker the eBiker pedals, the upper the extent of assist”.
“Now that almost all kinds of bicycle have been electrified, the person classes have gotten much more various. With the brand new Efficiency Line SX, we’re primarily focusing on sporty riders, for whom a low whole weight is necessary for driving quick and experiencing a pure stream. Our objective was to take care of the everyday Bosch high quality, driving efficiency and reliability and switch these to gentle, agile bikes. With the Efficiency Line SX, state-of-the-art eBike designs and most driving enjoyable may be optimally mixed.”
Claus Fleischer, CEO of Bosch eBike Methods.
The primary fashions with the Efficiency Line SX are anticipated to be accessible in the marketplace from Autumn 2023.
