Kalkhoff Bosch Active Line Original User Manual - 6  Nuvinci Harmony Gears

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VI User Manual | Impulse Ergo Pedelec

6  NuVinci Harmony gears

As soon as you operate the twist-grip shifter or start  

riding, the NuVinci Harmony gears switch on.  Now decide 

whether you prefer manual or automatic operation of the 

NuVinci Harmony gears. Press the mode button to switch 

to the desired mode.

We recommend the automatic mode for riding in the 

ERGO power-assist mode. Because as soon as you 

start to ride in manual mode, you have to shift gear 

manually to ensure that you do not exceed your target 

heart rate.

6.1  Automatic mode

Set the desired pedalling cadence using the twist-grip 

shifter. You can choose between 12 different pedalling 

cadences. The further forward you move the twist-grip 

shifter, the faster the pedalling cadence becomes. The 

number of boxes lit up in blue increases. The further back 

you move the twist-grip shifter, the slower the pedalling 

cadence becomes. The number of boxes lit up in blue de-

creases. The blue LEDs indicate the exact setting. Once 

you have found your ideal pedalling cadence, you can ride 

without even having to change gear once. The automatic 

mode adapts the gear ratio to the rider’s preferred pedal-

ling cadence.

Mode buttons

Manual mode

Automatic mode

Automatic selection of the pedalling cadence

5.2.4.2  Warning heart rate

Under the sub-item “Warning heart rate”, you can set your 

optimal warning heart rate. You can set this to a value of 

between “Target heart rate + 5” and “Target heart rate + 

20” by using the two arrow buttons on the control panel. 

Pressing the Set button confirms your selection and then 

takes you back to the menu sub-item display.

With a target heart rate in the range of the basic 

endurance, a warning heart rate of 10 beats (target 

heart rate + 10) is recommended. This means: If the 

target heart rate is exceeded by 10 beats, an acoustic 

warning signal sounds immediately, which repeats 

every six seconds. If the target heart rate is exceeded 

by 15 beats, two acoustic warning signals sound, 

which repeat every five seconds. If the target heart 

rate is exceeded by a minimum of 20 beats, three 

acoustic warning signals sound, which repeat every 

four seconds.