KENT BMX, Сборка

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Tires and Tubes
After assembling your bike, it will be necessary to inflate the tires. Check the sidewall of the tire for the correct tire pressure (PSI) and
inflate tires accordingly with a MANUAL BICYCLE PUMP. Improper inflation is the biggest cause of tire failure. Due to the slightly
porous nature of bicycle inner tubes, it is normal for your bike tires to lose pressure over time. For this reason it is critically
important to maintain the proper tire inflation on your bike.
1. Your bicycle has been equipped with tires which the bike’s manufacturer felt were the best balance of performance and value for the
use for which the bike was intended. The tire size and pressure rating are marked on the sidewall of the tire. CAUTION: Pencil type
automotive tire gauges and gas station air hose pressure settings can be inaccurate and should not be relied upon for consistent,
accurate pressure readings. Instead, use a high quality dial gauge.
WARNING: Never inflate a tire beyond the maximum pressure marked on the tire’s sidewall. Exceeding the recommended
maximum pressure may blow the tire off the rim, which could cause damage to the bike and injury to the rider and others.
The best way to inflate a bicycle tire to the correct pressure is with a bicycle pump. Gas station air hoses move a large volume
of air very rapidly, and will raise the pressure in your tire very rapidly. We do not recommend using gas station air hoses.
Tire pressure is given either as maximum pressure or as a pressure range. How a tire performs under different terrain or weather condi-
tions 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. Very 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.
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. The tire valve allows air to enter the tire’s inner tube under pressure, but doesn’t let it back out unless you want it to. There are
primarily two kinds of bicycle tube valves: The Schraeder Valve and the Presta Valve. The bicycle pump you use must have the fitting
appropriate to the valve stems on your bicycle. The Schraeder is like the valve on a car tire,
this is the type of valve stem you should have on your bike. To inflate a Schraeder valve tube,
remove the valve cap and push the air hose or pump fitting onto the end of the valve stem.
To let air out of a Schraeder valve, depress the pin in the end of the valve stem with the end
of a key or other appropriate object.
Schraeder Valve
Presta Valve
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