Bedienungsanleitung Bergamont Pedelec 2016 (Seite 54 von 87) (Englisch)

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MTB-PEDELEC | ORIGINAL OPERATING INSTRUCTIONS 2016 ORIGINAL OPERATING INSTRUCTIONS 2016 | MTB-PEDELEC

b ca e fd

ENGLISH

RIM TRUENESS AND SPOKE TENSION

For the true running of the wheel (e) it is imperative that the tension exerted by

the spokes is distributed evenly around the rim. If the tension of a single spoke

changes, e.g. as a result of riding fast over a kerb or of a loose nipple, the tensile

forces acting on the rim become unbalanced and the wheel will no longer run

true. The functioning of the BERGAMONT bike may even be impaired before

you notice the wobbling appearance of a wheel that has gone out of true.

With rim brakes the sides of the rims also serve as braking surfaces. An untrue

wheel can impair your braking effect. It is therefore advisable to check the

wheels for trueness from time to time. For this purpose lift the wheel off the

ground and spin it with your hand. Watch the gap between the rim and the

brake pads. If the gap varies by one millimetre or more, you should ask your

BERGAMONT dealer to true up the wheel (f).

DANGER!

Do not ride with untrue wheels. In the case of extreme side-to-side wob-

bles, the brake pads of rim brakes can miss the rim and get caught in the

spokes! This normally instantly jams the wheel and throws you off your bicycle.

CAUTION!

Loose spokes must be tightened at once. Otherwise the load on the other

spokes and the rim will increase.

CAUTION!

Truing (retruing) wheels is a difﬁcult job which you should definitely leave

to your BERGAMONT dealer.

VALVES

There are two valve types in general use on BERGAMONT mountain bikes:

1. Sclaverand or Presta valve (a): This valve is nowadays used on almost all

types of bikes. It is designed to withstand extremely high pressures.

2. Schrader or American valve (b): This is an adapted car tyre valve.

All valve types come with a plastic cap to protect them from dirt.

The Schrader valve can be inflated with a suitable pump directly after removing

the protective cap.

With Presta valves you first have to undo the small knurled nut a little and de-

press it carefully until air starts to escape. Check the nut is tightened and seated

in its stem, otherwise air may slowly leak out. Do not forget to tighten the valve

by hand nut after inflating.

Tyres with Schrader valves can conveniently be inflated at car filling stations

with a compressed air dispenser. The same applies to Presta valves fitted with a

special adapter. A compressed air dispenser must be used very carefully as you

may otherwise overinflate the tyre and make it burst.

To let out air, press the needle in the centre of the Schrader valve or the knurled

nut of the Presta valve (c).

It can be hard to inflate tyres to the necessary pressure by using hand pumps. It

is much easier with a track pump equipped with a pressure gauge (d).

Missbrauch melden von Frage und/oder Antwort

Libble nimmt den Missbrauch seiner Dienste sehr ernst. Wir setzen uns dafür ein, derartige Missbrauchsfälle gemäß den Gesetzen Ihres Heimatlandes zu behandeln. Wenn Sie eine Meldung übermitteln, überprüfen wir Ihre Informationen und ergreifen entsprechende Maßnahmen. Wir melden uns nur dann wieder bei Ihnen, wenn wir weitere Einzelheiten wissen müssen oder weitere Informationen für Sie haben.

Bergamont Pedelec 2016 Seite 54

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