ENGLISHENGLISH
69 |
ROAD BIKE | OWNER’S MANUAL 2017OWNER’S MANUAL 2017 | ROAD BIKE
| 68
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
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 on this SCOTT info CD before working
on such kind of tyres.
Tubeless tyres can only be used in combination with specifically de-
signed 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 ap-
propriate 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 SCOTT 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 SCOTT 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.
b ca e fd
To Next Page
Loading...
Need help?
General
