Derailleur Systems; Inspection - Dynacraft SINGLE SPEED Owner's Manual

DERAILLEUR SYSTEMS

The derailleur system includes the front and rear
derailleurs, the shift levers, and the derailleur control
cables, all of which must function correctly for smooth
gear shifting to occur. There are several different types of
derailleur systems but all operate using similar principles.
Your new bicycle may be fitted with a standard "friction"
type system where you will need to feel each gear shift
into position. It may be fitted with an "index" system (e.g.
SIS) which links each different gear position to a positive
click mechanism in the shifter, and makes shifting very
simple and precise.

Inspection

The operation of the derailleur system should be checked
at least every month. Check the operation of the rear
derailleur first, then the front. The rear derailleur should
shift the chain cleanly from one cog to the next without
hesitation. On index system equipped bicycles, each
notched position in the shifter must equate to a new gear
position. After shifting, the rear derailleur should not rub
on the chain. The derailleur should never cause the chain
to fall off the inner or outer freewheel cogs.
The front derailleur should also shift the chain cleanly
and without hesitation between each chainring. When the
chain has been positioned onto a new chainring, it should
not rub on the front derailleur. The chain should not fall
off a chainring at any time. Derailleur control cables are
a critical component that must be well maintained for
accurate shifting performance. Check them for any sign
of rust, fraying, kinks, broken strands, and any damage
to the cable housing. If you find any problems, the cables
may need replacing before you ride.
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DETAILED MAINTENANCE