Bedienungsanleitung EVO 2014 (Seite 24 von 28) (Englisch)

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Tire pressure is given either as maximum pressure or as a pressure range. How a tire performs under different

terrain or weather conditions depends largely on tire pressure. Inﬂating the tire to near its maximum

recommended pressure gives the lowest rolling resistance; but also produces the harshest ride. High

  pressuresworkbestonsmooth,drypavement.Lowpressures,atthebottomoftherecommendedpressure

range, give the best performance on smooth, slick terrain such as hard-packed clay, and on deep, loose

surfaces such as deep, dry sand.

Tire pressure that is too low for your weight and the riding conditions can cause a puncture of the tube by

allowing the tire to deform sufﬁciently to pinch the inner tube between the rim and the riding surface.

CAUTION: Pencil type automotive tire gauges can be inaccurate and should not be relied upon for

consistent, accurate pressure readings. Instead, use a high quality dial gauge.

Ask your dealer to recommend the best tire pressure for the kind of riding you will most often do, and have

the dealer inﬂate your tires to that pressure. Then, check inﬂation as described in Section 1.C so you’ll know

how correctly inﬂated tires should look and feel when you don’t have access to a gauge. Some tires may need

to be brought up to pressure every week or two, so it is important to check your tire pressures before every ride.

Some special high-performance tires have unidirectional treads: their tread pattern is designed to work better

in one direction than in the other. The sidewall marking of a unidirectional tire will have an arrow showing

the correct rotation direction. If your bike has unidirectional tires, be sure that they are mounted to rotate in

the correct direction.

2. Tire Valves

  Thereareprimarilytwokindsofbicycletirevalves:TheSchraderValveandthePrestaValve.Thebicyclepump

you use must have the ﬁtting appropriate to the valve stems on your bicycle.

The Schrader valve (ﬁg. 18a) is like the valve on a car tire. To inﬂate a Schrader valve tire, remove

the valve cap and clamp the pump ﬁtting onto the end of the valve stem.

The Presta valve (ﬁg. 18b) has a narrower diameter and is only found on bicycle tires. To inﬂate a

Presta valve tire using a Presta headed bicycle pump, remove the valve cap; unscrew

(counterclockwise) the valve stem lock nut; and push down on the valve stem to free it up.

Then push the pump head on to the valve head, and inﬂate. To inﬂate a Presta valve with a

Schrader pump ﬁtting, you’ll need a Presta adapter. (available at your bike shop)

WARNING: We highly recommend that you carry a spare inner tube when you ride your bike, unless

the bike is ﬁtted with tubeless tires.

Patching a tube is an emergency repair. If you do not apply the patch correctly or apply several

patches, the tube can fail, resulting in possible tube failure, which could cause you to loose control

and fall. Replace a patched tube as soon as possible.

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EVO 2014 Seite 24

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