Bedienungsanleitung Kona 2015 (Seite 22 von 40) (Englisch)

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KONA OWNER’S MANUAL

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 ying 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 effective 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 trafc or other hazards and distractions.

Everything changes when you ride on loose surfaces or in

wet weather. It will take longer to stop 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.

D) SHIFTING GEARS

Your multi-speed bicycle will have a derailleur drivetrain,

an internal gear hub drivetrain or, in some special cases,

a combination of the two.

1. How a derailleur drivetrain works

If your bicycle has a derailleur drivetrain, the gear-chang-

ing mechanism will have:

• a rear cassette or freewheel sprocket cluster

• a rear derailleur

• usually a front derailleur

• one or two shifters

• one, two or three front sprockets called chainrings

• a drive chain

A) Shifting Gears

There are several different types and styles of shifting

controls: levers, twist grips, triggers, combination shift/

brake controls and push-buttons. Ask your dealer to

explain the type of shifting controls that are on your bike,

and to show you how they work.

The vocabulary of shifting can be pretty confusing.

A downshift is a shift to a “slower” gear, one which is

easier to pedal. An upshift is a shift to a “faster”, harder

to pedal gear. What’s confusing is that what’s happening

at the front derailleur is the opposite of what’s happening

at the rear derailleur (for details, read the instructions

on Shifting the Rear Derailleur and Shifting the Front

Derailleur on the next page). For example, you can select

a gear which will make pedaling easier on a hill (make a

downshift) in one of two ways: shift the chain down the

gear “steps” to a smaller gear at the front, or up the gear

“steps” to a larger gear at the rear. So, at the rear gear

cluster, what is called a downshift looks like an upshift.

The way to keep things straight is to remember that

shifting the chain in towards the centerline of the bike is

for accelerating and climbing and is called a downshift.

Moving the chain out or away from the centerline of the

bike is for speed and is called an upshift.

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Kona 2015 Seite 22

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