7.5 Drive and gearshift
38
The Bicycle
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 42) 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 and the translation changes.
Your dealer has checked your bike before the handover and
adjusted the shifter. Through the first mile under stress, however,
the shift cables could lengthen slightly and the shifter must be
readjusted.
With the adjustment screw of the shifting lever (image 43), you can
readjust the tension of the shift cable. With the two positioning
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 pinion and drop out or between pinion and spokes of
the rear wheel.
Please read also the enclosed operating instructions of the
manufacturer of derailleur and shifter.
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 maximized. 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.
Image 42
Image 43
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.
