Bedienungsanleitung Cannondale 2011 (Seite 30 von 106) (Englisch)

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PART I

(continued from previous page...)

Brakes are designed to control your speed, not just

to stop the bike. Maximum braking force for each

wheel occurs at the point just before the wheel

“locks up” (stops rotating) and starts to skid. Once

the tire skids, you actually lose most of your stopping

force and all directional control. You need to practice

slowing and stopping smoothly without locking up

a wheel. The technique is called progressive brake

modulation. Instead of jerking the brake lever to the

position where you think you’ll generate appropriate

braking force, squeeze the lever, progressively

increasing the braking force. If you feel the wheel

begin to lock up, release pressure just a little to keep

the wheel rotating just short of lockup.

It’s important to develop a feel for the amount

of brake lever pressure required for each wheel at

dierent speeds and on dierent surfaces. To better

understand this, experiment a little by walking your

bike and applying dierent amounts of pressure to

each brake lever, until the wheel locks.

When you apply one or both brakes, the bike begins

to slow, but your body wants to continue at the

speed at which it was going. This causes a transfer

of weight to the front wheel (or, under heavy braking,

around the front wheel hub, which could send you

ﬂying over the handlebars).

A wheel with more weight on it will accept greater

brake pressure before lockup; a wheel with less

weight will lock up with less brake pressure. So,

as you apply brakes and your weight is transferred

forward, you need to shift your body toward the

rear of the bike, to transfer weight back on to the

rear wheel; and at the same time, you need to both

decrease rear braking and increase front braking

force. This is even more important on descents,

because descents shift weight forward.

Two keys to eective speed control and safe stopping

are controlling wheel lockup and weight transfer.

This weight transfer is even more pronounced if your

bike has a front suspension fork. Front suspension

“dips” under braking, increasing the weight transfer

(see also SECTION 4.F). Practice braking and weight

transfer techniques where there is no trac or other

hazards and distractions.

Everything changes when you ride on loose surfaces

or in wet weather. Tire adhesion is reduced, so the

wheels have less cornering and braking traction and

can lock up with less brake force. Moisture or dirt on

the brake pads reduces their ability to grip. The way

to maintain control on loose or wet surfaces is to go

more slowly.

More info:

ROAD BIKES: DISC BRAKES

Now, go to PART II of this manual

and read “Understanding Disc Brakes

on Road Bikes”

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