42
the BiCyCle
7.5 Drive and gearshift
Your Pedelec is equipped with a high-quality 10-speed
derailleur, currently the most efficient power transfer on the
bike. These gears will help you to always use the optimal
transmission (pedaling cadence) independent of terrain (flat
or hilly area) and independent of weather (Tail or Headwind).
That means that you are able to pedal always with an optimal
cadence of 60-80 crank revolutions per minute.
The complete system (Image 46) is composed of the bottom
bracket, the crankset, the rear derailleur, the chain, the gear
shifter and the 10-speed cassette. With the gear shifter you
control the rear derailleur, which ensures that the chain can
move on the sprockets of the freewheel to change the trans
-
mition ratio.
Your dealer has checked your bike before the handover and
adjusted the derailleur. Through the first miles of use, howe
-
ver, the shift cables could lengthen slightly and the derailleur
has to be readjusted.
With the adjustment screw of the shift lever (Image 47), you
can readjust the tension of the shift cable. With the two posi
-
tioning screws on the rear derailleur, you can adjust the lower
(h screw) and upper end stop (l-screw), to make sure that the
chain cannot get between sprocket and drop out or between
sprocket and hub of the rear wheel.
The precise adjustment of the derailleur is difficult
and should better be done by a mechanics. If you
have any problems with the adjustment of the
shifter, please contact your dealer.
The chain should be cleaned and greased regularly (especially
after driving in the rain), so it runs as quietly as possible, the
friction losses are as low as possible, and the lifetime is maxi
-
mized. Clean the chain regularly with a clean cotton cloth and
lubricate it afterwards.
Some minutes after you have oiled the chain, rub it with a
cloth to remove superfluous oil from the outer surface.
Some minutes after you have oiled the chain clean it with a
cloth to remove exessive oil from the outer surface.
image 46
image 47
Summary of Contents for Q-Powe
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