Kalkhoff Fast Pedelec User Manual - page 83

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II User Manual Fast Pedelec

The fewer of the 6 bars that are displayed, the lower the 

actual power output of the motor and the consumption. If 

more bars are visible, the power output and consumption 

of the motor is higher.

IF YOU CAN 

SEE... 

THE BATTERY IS SUPPLYING 

A CURRENT OF

6 bars

more than 20 amperes

5 bars

up to 16 – 20 A

4 bars

up to 12 – 16 A

3 bars

up to 8 – 12 A

2 bars

up to 2 – 8 A

1 bar

up to 0 – 2 A

If the power consumption is very low, no bars are 

displayed.

4.1.12 Switching the light on and off

If you are using the assistance and press the light switch, 

this switches the lighting of the fast Pedelec on and off.

If you are riding with the lights on and switch off the 

system, the lights also switch off automatically. You must 

therefore switch the lights on again.

You must always take the battery with you, even if you 

want to ride without assistance as the lights will only 

work with the battery.

5   Assistance by the electric motor

If your Pedelec is equipped with hub gears, you may 

have to take more load off the pedals when changing 

gears than you would normally do when riding your 

conventional bike. This is due to the additional power 

output of the electric motor. The hub gear system 

contains a device that protects it against gear shifting 

operations under excessive loads in order to preserve 

the gear unit in the hub. 

5.1   Operating principle of assistance

The motor provides support as soon as you switch the as-

sistance on and start pedalling.

The thrust delivered by the motor depends on three factors:

•

Your own pedalling effort 

The motor adapts to the force you apply. If you 

pedal harder, e.g. uphill or when setting off, the 

power sensor detects this and increases the thrust 

accordingly. However, the thrust is limited by the 

maximum motor output.

•

The assist level you have selected 

With the 

"high assist level / HIGH"

 setting, the 

power delivered by the motor is double your own 

effort (1 : 2).  

With the 

"medium assist level / Standard"

 setting, 

the power delivered by the motor increases your 

effort in a ratio of 1 : 1.3.  

With the 

"low assist level / ECO"

 setting, the power 

delivered by the motor is more than half your own 

effort (1 : 0.75).

•

The speed at which you are currently travelling 

When you set off on your Pedelec, the assistance 

increases as you build up speed until the bike 

reaches its maximum speed of roughly 36 km / h. 

The assistance then reduces automatically until 

you reach a speed of 45 km / h when it switches off. 

This applies for the largest gear only. In all other 

gears, the motor switches off earlier, depending on 

the gear ratio.