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EN-38 Originalbetriebsanleitung Allgemein
24.3 Derailleur
Warnings
Seriousfallsandaccidentscausedbyinsucientbicycle
control.
Avoid continuously riding using the smallest
chainring at the front in combination with the
smallest sprocket at the rear. Similarly, avoid riding
with the largest chainring at the front with the largest
sprocket at the rear. The high levels of skew will
cause increased wear.
Shift gears carefully and in small steps while
pedalling, but never do so while pedalling backwards.
This may damage the shifter.
Do not use your bicycle without a spoke protector. If
no spoke protector is tted, you will need to retrot
one. Otherwise, the bicycle chain can become caught
between the sprocket and spokes.
Information
Even with an optimally adjusted shifter, you may hear
noise when the chain is running at an extreme angle.
This is not a defect, and will not damage the drive. The
noise will abate once the angle of the chain reduces.
A derailleur consists of between 6 and 12 sprockets on the
rear wheel and between 1 and 3 chainrings on the crank
drive. The number of sprockets and chainrings gives you
the number of gears. The left-hand control element on the
handlebars controls the front derailleur. This directs the
chain to another chainring. The right-hand control element
controls the rear derailleur and hence guides the chain over
the various sprockets on the rear wheel. With mechanical
derailleurs, the control elements control the front derailleur
and rear derailleur with cables, whereas with electronic
derailleurs, this is done with cables and motors. Electronic
derailleurs are battery-operated. You can use the left-hand
Fig. 60 Correct gear lever position
24.2 Adjust the shift cable tension
If a noise can be heard after shifting gears while you ride,
this can be due to a poorly adjusted shift cable tension. To
remedy this problem, you can do the following:
1. Turn the cable adjustment screw on the gear lever half
a turn counterclockwise.
2. If the noise decreases, turn the cable adjustment
screw further in the counterclockwise direction. If
the noise increases, you will need to turn the cable
adjustment screw in the other direction, i.e. clockwise.
Keep turning until the sound can no longer be heard.
If you can still hear noises after making this adjustment,
get in touch with your specialist workshop.
Fig. 61 Adjusting the cable tension ©Shimano
Cable adjustment screw
control element to make a rough preselection, e.g., the
smallest chainring for an uphill climb, and then use the
right-hand control element – depending on the incline – to
select the appropriate sprocket. Use the smallest chainring
for climbs, and the largest for level and downhill rides.
Fig. 62 Mechanical derailleur
Chainrings
Motor
Gears
Shift cable Sprocket assembly
Fig. 63 Electronic derailleur
Derailleur
Cable
Gears
Sprocket assembly
Chainrings
38


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