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D.3 BRAKES
There are three general types of bicycle brakes: rim brakes, which
operate by squeezing the wheel rim between two brake pads; disc
brakes, which operate by squeezing a hub-mounted disc between
1. Riding with improperly adjusted brakes, worn brake pads, or
wheels on which the rim wear mark is visible is dangerous and
can result in serious injury or death.
2. Applying brakes too hard or too suddenly can lock up a wheel,
which could cause you to lose control and fall. Sudden or
excessive application of the front brake may pitch the rider
over the handlebars, which may result in serious injury or
death.
3. Some bicycle brakes, such as disc brakes (Figure 4.7) and
linear-pull brakes (Figure 4.6), are extremely powerful. Take
extra care in becoming familiar with these brakes and exercise
particular care when using them.
4. Some bicycle brakes are equipped with a brake force
modulator, a small, cylindrical device through which the brake
control cable runs and which is designed to provide a more
progressive application of braking force. A modulator makes
the initial brake lever force more gentle, progressively
increasing force until full force is achieved. If your bike is
equipped with a brake force modulator, take extra care in
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two brake pads; and internal hub brakes. All three can be operated
by way of a handlebar mounted lever. On some models of bicycle,
the internal hub brake is operated by pedaling backwards.
WARNING!
becoming familiar with its performance characteristics. Some
brake force modulators are adjustable. If you don't like the
feel of your brakes, ask your dealer about adjusting the brake
force modulation.
5. Disc brakes can get extremely hot with extended use. Be
careful not to touch a disc brake until it has had plenty of time
to cool.
6. See the brake manufacturer's instructions for operation and
care of your brakes, and for when brake pads must be
replaced. If you do not have the manufacturer's instructions,
see your dealer or contact the brake manufacturer.
7. If replacing worn or damaged parts, use only manufacturer-
approved genuine replacement parts.
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