The Motor; Operation; Range - Derby cycle Impulse 2.0 Ergo Originalbetriebsanleitung

9 The motor

9.1

Operation

If you switch on the assistance and start pedalling, the
motor starts as soon as the rear wheel is turning.
The level of thrust delivered by the motor depends on
three factors:
•
Your own pedalling efort.
The motor adapts to the force you apply. If you
pedal harder, e.g. uphill or when setting of, the
power sensor detects this and delivers more power
than if you were only pedalling gently. The assis-
tance increases proportionally if you pedal harder.
The higher the assist level you set, the more pro-
nounced this assistance characteristic becomes.
Impulse
pedal power and
Propulsive power (pedal
force + electrical assistance)
Pedal force
Speed
Ratio of pedal force to electrical assistance
•
The level of assistance you have selected.
In the highest assist level (POWER), the motor as-
sists you with the highest output and therefore also
uses the most energy. With the SPORT assist level,
the motor produces slightly less power. If you have
selected ECO, you receive the least amount of as-
sistance but have the battery's maximum range at
your disposal.
•
How fast you ride.
When you set of on your Pedelec, the assistance
increases as you build up speed until it reaches its
maximum, just before the highest assisted speed
is achieved. Then it reduces automatically and
switches of at roughly 25 km/h, irrespective of the
gear you are in. Depending on the power-assist
mode you are riding in, the transition between rid-
ing with and without power assist may seem more
or less abrupt.
28 Original User Manual | Pedelec Impulse 2.0 Ergo
Increasing
assistance
Electrical assistance
Max. assistance
9.2

Range

The distance you can travel using the power assist with
the battery ully charged depends on several factors:
•
Selected assist level
If you want to cover a large distance with power
assist, select the smaller gears, i.e. the ones that
are easier to pedal. Also select a low assist level
(ECO).
•
How you ride
If you are riding in gears that are harder to pedal
and select a high assist level, the motor will pro-
duce plenty of power to help you along. However,
just as with driving a car at high speed, this leads
to higher consumption. You will therefore have to
recharge the battery sooner. You can conserve bat-
tery power by pedalling with even force throughout
the complete revolution of the pedals.
Reducing
Assistance
assistance switched of
Switch-of speed
•
Ambient temperature
If it is colder, you will travel a shorter distance
with the same battery charge. To maximise the dis-
tance you can travel, keep the battery in a heated
room so that it is at room temperature when you it
it on your Pedelec.
When the motor is in use, the battery generates
enough heat to not lose too much of its power at
low ambient temperatures. The battery cells can
operate at temperatures of -15°C to +60°C.
•
Technical condition of your Pedelec
Make sure the tyre pressure is correct. If you ride
your bike with too little air in the tyres, this can
signiicantly increase the rolling resistance, es-
pecially on smooth surfaces, e.g. tarmac. If the
ground is uneven, as on a country path or gravel
track, a somewhat reduced tyre pressure can lead