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MTB/ Road Bike/ TRekking
MTB/ Road Bike/ TRekking
7.1.1 Check fitting
1.
Shake both road wheels vigorously at
right angles to the direction of travel.
-
-
-
The road wheels must not move in the forks.
The quick release must be closed (see
Chapter 8.8).
There must be no audible creaking or
rattling sounds.
2.
Contact your dealer if this check shows
defects of any description
7.1.2 Check the rims
Risk of Personal injury and Material
damage!
Worn rims and/or substantial warping or
run-outs may lead to dangerous riding
conditions, falling, accidents and material
damage.
•
Worn rims must be replaced and warping or
run-outs repaired!
Risk of Personal injury and Material
damage!
With rim brakes: dirty rims may reduce
braking efficiency.
•
Dirty rims must be cleaned immediately.
1.
Check rims for wear:
Rims with wear indicators:
Visual check
Rims without wear indicators:
Visual check
•
Fingernail check: Run your fingernail ac-
ross the rim shoulder. No scoring should
be felt.
•
If the wear indicator is no longer visible
or if the rim has discernible scoring, the
rim must be replaced.
2.
Check rims for run-out:
•
Lift the bike up and spin first the front
and then the rear wheel.
•
Note the distance between the rim and
the brake shoes and on disk brakes the
distance between the rim and the frame
strut or fork leg. The maximum permis-
sible deviation per rotation amounts to
2 mm.
3.
Check your rims for dirt, especially oil
and grease.
dirty rims must be cleaned immediate-
ly (see Chapter 12).
Wear indicator
Front and rear wheels are both called
road wheels.
a road wheel consists of :
•
the hub
•
On the rear wheel hub only sprocket or
sprocket cassette
•
Brake disk, if fitted,
•
Spokes
•
Rim and the tyre equipment, which in turn
consists of
- Tyre casings
- Tube
- Rim tape insert
Currently, there are three different types
of tyre:
Wired-on tyres or folding tyres: This most
common type of tyre consists of the fol-
lowing components:
•
tyre
- If there are any loose parts:
- rim tape (only for rims with spoke holes)
Inside the tyre, there is a wire or a pad that
attaches itself to the rim flange when the
tyre is inflated.
Field of application: All categories.
if you are unsure or if you have questions,
please consult your specialist dealer.
only ride the bike again after it has been
properly readjusted by the dealer.
1.
Visually inspect the whole bike:
•
Check all fixing screws for correct tightness
(see Chapter 3.3)
•
Check the entire bike for dents, ruptures,
deep scratches and other forms of mechani-
cal damage.
2.
Contact your dealer if visual inspections
show defects of any description.
7.1 Check the road wheels
•
Tubeless tyres:
Special rims (with or without hermetically
sealed spoke holes) and tyres form an
airtight seal and make the use of a tube un-
necessary. However, a tube can still be fitted
in the event of a breakdown.
Field of application:
Mountain bikes, cross bikes, racing bike/
street.
•
Tubed tyres:
The tube is sewed into the tyre. During
assembly, the tyre including the tube is
glued to a rim specifically designed for this
purpose. The assembly instructions of the
tyre, glue and rim manufacturers must be
observed in this context. Please also consi-
der the notes in chapter 7.1.3.
Field of application: Racing bike/street
Information on the type of tyre and the tyre
size is provided in chapter 16, in the delivery
certificate, or can be obtained by consulting
your specialist dealer on this matter.
Bicycles which are equipped according to StVZO
may be fitted with rim reflectors.
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