Bosch has announced updates to its eShift system in collaboration with TRP and Shimano.
Launching at Eurobike 2024, this is the first time eShift can be used with electronic derailleurs, with Bosch using TRP’s unreleased EASI A12 drivetrain, which has soft launched alongside the updates.
The German brand has also integrated AI into its navigation and route-planning app. A new Eco+ motor mode has been added as well.
eShift extended to derailleurs
Bosch first launched eShift in 2014. It was originally only compatible with select internal gear hubs, such as Shimano Nexus Di2.
It has now extended its partnership with TRP and Shimano, integrating the technology with their electronic derailleurs.
eShift works by timing the gearshift while reducing motor support for a fraction of a second, resulting in a smoother gear change.
Bosch says this not only makes for a more comfortable ride but also decreases wear on mechanical components because less power is transferred when the chain isn't properly seated on the cassette.
The system can also change gears automatically. This works similarly to SRAM’s Eagle Powertrain AutoShift function, where gear changes are made to maintain a set cadence.
A new RollShift feature is also incorporated into the automatic mode. This measures your rolling speed while coasting, automatically changing gears to make your speed.
You can still change gear while in auto mode by using the triggers on the shifter.
In addition to TRP's new electronic groupset, eShift is still compatible with Shimano’s mechanical Cues Di2 derailleurs and Nexus Di2 internal gear hubs.
TRP teases EASI A12 drivetrain
This EASI A12 is the first electronic drivetrain we’ve seen from TRP.
TRP is tight-lipped on details, but we expect to learn more as Eurobike progresses.
So far we can see the derailleur takes power from a wire connected to an ebike's battery. The shifter on the bars is completely wireless.
As the name suggests, the drivetrain is 12-speed.
The derailleur exclusively works with the Performance Line CX and SX motors.
AI integrated Flow
AI is now integrated into Bosch's Smart System. Bosch says this enables more intelligent navigation and route planning.
The new Range Control feature calculates predicted battery life when you arrive at your destination, reducing range anxiety.
Rider weight, the elevation profile of the journey and riding behaviour are all tracked to provide as accurate an estimate as possible.
Bosch says the system becomes more accurate over time as it observes rider behaviour.
The system can automatically reduce motor support based on a planned route to maximise range.
The new system can also estimate arrival time.
New Eco+ mode
Bosch has updated its Eco+ mode with more energy-saving features.
The motor is now switched off when descending hills or coasting on the flat to conserve battery life.
The mode will provide gentle support when getting up to speed or when overtaking, but Bosch says the mode is more akin to riding a non-assisted bike, with more work required by the rider once up to speed.
