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The Brake System
Brakes are used for adjusting one’s speed to the surrounding terrain and traf-
fic. In an emergency situation, the brakes must bring the STEVENS bicycle to a
halt as quickly as possible. In the event of such emergency braking, the rider’s
weight shifts forward abruptly, thus reducing the load on the rear wheel. The rate
of deceleration is primarily limited by the danger of the rear wheel losing contact
with the ground resulting in an overturning of the STEVENS bicycle and secondly
by the tyres' grip on the road. Such a problem becomes particularly acute when
riding downhill. Therefore, in case of an emergency braking situation you must try
to shift your weight back and down as far as possible.
Actuate both brakes simultaneously and bear in mind that, due to the weight
transfer, the front brake can generate a far better braking effect on a surface with
good grip. The braking conditions on unpaved surfaces differ, i.e. overbraking the
front wheel can make the wheel slip away. Therefore, be sure to practise braking
on different kinds of surface in an area free of traffic.
For more information see chapter “The Brake System” in your comprehen-
sive STEVENS user manual as well as in the instructions of the component manu-
facturers on the enclosed CD-ROM.
Danger:
Ensure that braking
surfaces and brake
pads are absolutely free
of wax, grease and oil.
Risk of accident!
Danger:
Be careful while getting
used to the brakes.
Practise emergency
stops in a place clear
of traffic until you are
comfortable controlling
your STEVENS bicycle.
This can save you from
having accidents.
Danger:
Wet weather reduces
the braking effect and
the road grip of the
tyres. Be aware of
longer stopping distanc-
es when riding in the
rain, reduce your speed
and actuate the brakes
carefully.
Caution:
When replacing any
parts, be sure to only
use parts that bear the
appropriate mark and,
to be on the safe side,
original spare parts. Your
STEVENS dealer will be
pleased to help you.
The Gears
The gears of your STEVENS bicycle serve to adjust the gear ratio to the terrain
you are riding on and the desired speed.
In the case of derailleur gears a low gear where the chain runs on the small
chainring and on a large sprocket allows you to climb steep hills with moderate
pedalling force. You must, however, pedal at a faster pace or higher frequency.
High gears (large chainring, small sprocket) are for riding downhill. Every turn of
the pedals takes you many metres forward at correspondingly high speed. Con-
tinue pedalling during gear shifting, however, at clearly reduced pedalling force.
Modern bicycles can have up to 33 gears. As there are, however, overlapping
ranges, actually 15 to 18 gears are usable. It is not advisable to use gears which
involve an extremely oblique run of the chain, as this reduces power transmission
efficiency and hastens wear of the chain. An unfavourable run of the chain is when
the smallest chainring is used with one of the two or three outermost (smallest)
sprockets or when the largest chainring is used with one of the inmost (largest)
sprockets.
Note:
For more information
on Shimanos’s Di2 and
SRAM’s eTap see chapter
“The Gears” in your
comprehensive STEVENS
user manual as well as
in the instructions of the
gear manufacturer on the
enclosed CD-ROM.
Danger:
The assignment of brake lever to brake calliper can vary, e.g. left lever acts
on front brake. Have a look at the bike card and check whether the brake
lever of the front brake is on the side you are used to (right or left). If it is
not, ask your STEVENS dealer to switch the brake levers before you set off
for the first time.
Note:
Read in any case the chapter “The Brake System” in your comprehensive
STEVENS user manual as well as in the instructions of the brake man-
ufacturer on the enclosed CD-ROM and make yourself familiar with its
operation before your first ride.
In the case of multi-speed hubs and gearbox shift systems (Pinion) “1”
stands for the first, lowest gear. The gears are shifted through one after the other,
if possible without turning the pedals, at least however at reduced pedal pressure.
The highest number stands for the highest gear.
NuVinci gear hubs are designed to allow stepless shifting by means of a twist
grip within their range of gear ratio. With the NuVinci hub the force transmission is
ensured by balls instead of toothed wheels.
With NuVinci the actual gear ratio is indicated to the cyclist on the display. If
the cyclist climbs uphill, the gear ratio is low, on level ground the gear ratio is high.
For more information see chapter “The Gears” in your comprehensive
STEVENS user manual as well as in the instructions of the gear manufacturer on
the enclosed CD-ROM.
Caution:
Always make sure chang-
ing gears makes as little
noise as possible and is
absolutely jerk free.
Caution:
Practise shifting gears in
a place free of traffic until
you are familiar with the
functioning of the levers
or twist grips of your
STEVENS bicycle.
Note:
Read in any case the
chapter “The Gears”
in your comprehensive
STEVENS user manual as
well as in the instructions
of the gear manufacturer
on the enclosed CD-ROM
and make yourself
familiar with its operation
before your first ride.
S - 32 | English English | S - 33
17


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