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Bergamont ROAD BIKE 2019 Manual

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ENGLISH ENGLISH
ROAD BIKE | OWNER’S MANUALOWNER’S MANUAL | ROAD BIKE
psi bar psi bar
80 5.5 115 7.9
85 5.9 120 8.3
90 6.2 125 8.6
95 6.6 130 9.0
100 6.9 135 9.3
105 7.2 140 9.7
110 7.6 145 10.0
b ca e fd
| 6 6 6 7 |
Clincher and folding tyres and rim alone are not able to hold the air. Therefore, an
inner tube has to be placed inside the tyre (f) to retain the air pressure.
Rims of clincher and folding tyres require in general a high-value rim tape over the
complete width of the rim base. This rim tape protects the inner tube from the braking
heat which could make the tyre burst.
In the case of tubular tyres that must be glued on the rim the tube is already
integrated into the tyre and can be neither removed, nor patched in the case of a
puncture. This type of tyre requires special rims without rim flanges.
If necessary, read the respective manuals before working on such kind of tyres.
Tubeless tyres can only be used in combination with specifically designed wheels.
Pay attention to the manufacturer’s type designations (e.g. “2way-fit”/“tubeless
ready“).
With reduced pressure tubeless tyres can be used as clincher tyres. The appropriate
pressure for 75-kg / 165-lbs-cyclists is usually 7 bar and for 65-kg / 143-lbs-cyclists
6 bar. Make sure the pressure is not below 4.5 bar. Observe the marking on the tyre
sides regarding the maximum pressure.
DANGER!
G
Replace tyres with a worn tread or with brittle or frayed sides. Dampness and dirt
penetrating the tyre can cause damage to its inner structure. The tube might burst.
Risk of falling!
DANGER!
G
If you mount a new tyre with another size than the standard tyre mounted, it might
be possible that the clearance between the front of your shoe and the wheel will
be reduced when you ride at reduced speed. Also observe the space between fork and
frame. Risk of accident!
CAUTION!
A
Truing (retruing) wheels is a difficult job which you should definitely leave to your
BERGAMONT dealer.
NOTES ON TYRES, INNER TUBES, RIM TAPE, INFLATION PRESSURE
The tyres should provide grip and traction. At the same time they should run smooth
and enhance the rider’s comfort by absorbing small shocks. Both the rolling friction
and the grip depend on the nature of the tyre carcass, the rubber compound and the
tyre tread. Your BERGAMONT dealer will be pleased to help you choose from the
numerous types of tyres.
If you want to mount a new tyre, you need to observe the sizing system and the actual
size of the old tyre. The latter is specified in two different units on the side of the tyre.
One of the sizes is the standardised size in millimetres which is more precise, e.g. the
number sequence 23-622 means that the tyre is 23 mm wide when fully inflated and
has an inner tyre diameter of 622 millimetres. The other size is indicated in inches (e.g.
23x7/8 or 700x23) (a).
Tyres must be inflated to the proper inflation pressure (b) to provide an optimal
compromise between smooth running and riding comfort. Properly inflated tyres are
also more resistant to punctures. An insufficiently inflated tyre can easily get pinched
(“snakebite”) when it goes over a sharp kerb.
The air pressure recommended by the manufacturer is given on the tyre side (c)
or on the type label. The lower of the two pressure specifications makes for better
cushioning for lightweight riders and is therefore best for cycling on a rough surface.
Rolling resistance on level ground decreases with growing pressure, but so does
comfort. Highly inflated tyres are therefore most suitable for heavy riders and for
riding on tarred roads (d). Therefore, adjust the pressure to your weight and your
riding habits.
Inflation pressure is often given in the old system of units, i.e. in psi (pounds per
square inch). The table (e) gives the most common pressure values in terms of both
systems.
… 34 …


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