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Winora Algemene Manual

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5 Brake System
5.1 General Information
Brakes (a+b) are used for adjusting one’s speed to the surrounding terrain
and traffic. In an emergency situation, the brakes must bring the bicycle to
a halt as quickly as possible. In the process of such emergency braking, the
rider’s weight shifts forward, thus reducing the load on the rear wheel (c+d).
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 bicycle and
secondly by the tyres’ grip on the road. This problem becomes particularly
acute when riding downhill. Therefore, in case of an emergency braking situ-
ation you have to try to put your weight back as far as possible.
Actuate both brakes simultaneously and bear in mind that, due to the weight
transfer, the front brakes can generate a far better braking effect on a sur-
face 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.
Please note that some dirt bikes are fitted with only one brake.
This is to prevent the rider from falling down his bicycle by too
strongly applying the front brake. This means, however, also a
reduction of the braking effect. For this reason it is very impor-
tant for you to ride with caution and with this fact in mind. Do
not use such type of mountain bike on public roads!
Wet weather reduces the braking power. Apply the brakes carefully when
riding on wet or slippery surface, as the tyres can easily slip away. Therefore,
reduce your speed when riding in such conditions.
Prolonged braking or permanent dragging of brake pads can lead to over-
heating of the rims in the case of rim brakes. This can damage the inner tube
or make the tyre slip on the rim causing a sudden loss of air which could
lead to a serious accident.
With disc brakes too, prolonged braking or permanent dragging of brake
pads can lead to an overheating of the brake system. This can lead to a
reduction of the braking power or brake failure. Risk of an accident!
When riding downhill, get used to braking hard and then releasing the brake
again, whenever the road surface and the situation allows for it. If you are in
doubt about the braking action, stop and let the brake system cool down.
a
b
c
d
The assignment of brake lever to brake calliper can vary (a), e.g.
left lever acts on front brake. Make yourself familiar with the
lever-to-brake assignment or ask your bicycle dealer to change
the brakes as you want them.
Be careful while getting used to the brakes (b). Practise emer-
gency stops in a place free of traffic until you are comfortable
controlling your bicycle. This can save you from having acci-
dents.
Wet weather reduces your braking power and the road grip of
the tyres. Be aware of longer stopping distances when riding in
the rain, reduce your speed and actuate the brakes carefully.
Ensure that braking surfaces are absolutely free of wax, grease
and oil. Risk of an accident!
5.1.1 Brakes – How They Work and What to Do About Wear
Actuating the hand lever on the handlebars (c+d) causes a brake pad to be
pressed against a brake surface, and the ensuing friction slows down the
wheel. If water, dirt or oil gets in contact with one of the braking surfaces,
this changes the coefficient of friction and deceleration is reduced. This is
why brakes respond with a slight delay and less powerfully in wet weather.
In order to maintain their effectiveness, brakes need to be checked and
readjusted regularly.
a
b
c
d
… 36 …


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