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D. Shifting gears
The AR Ī V eBike may be single speed or it may have an internal hub gears.
a. Shifting internal gear hub gears
Shifting with an internal gear hub drivetrain is simply a matter of moving the shifter to the indicated position for the desired gear
ratio. After you have moved the shifter to the gear position of your choice, ease the pressure on the pedals for an instant to allow
the hub to complete the shift.
b. Which gear should I be in?
The numerically lowest gear (1) is for the steepest hills. The numerically largest gear is for the greatest speed.
Shifting from an easier, “slower” gear (like 1) to a harder, “faster” gear (like 2 or 3) is called an upshift. Shifting from a harder,
“faster” gear to an easier, “slower” gear is called a downshift. It is not necessary to shift gears in sequence. Instead, find the
“starting gear” for the conditions — a gear which is hard enough for quick acceleration but easy enough to let you start from a stop
without wobbling — and experiment with upshifting and downshifting to get a feel for the different gears. At first, practice shifting
where there are no obstacles, hazards or other traffic, until you’ve built up your confidence. Learn to anticipate the need to shift,
and shift to a lower gear
before the hill gets too steep. If you have difficulties with shifting, the problem could be mechanical
adjustment. See "How to find help for servicing your AR Ī V eBike" above.
c. What if it won’t shift gears?
If moving the shift control, one click repeatedly fails to result in a smooth shift to the next gear chances are that the mechanism is
out of adjustment. See "How to find help for servicing your AR
Ī V eBike" above.
E. Tires and Tubes
1. Tires
The tire size and pressure rating are marked on the sidewall of the tire.
WARNING: Never inflate a tire beyond the maximum pressure marked on the tire’s sidewall or the wheel rim. If the
maximum pressure rating for the wheel rim is lower than the maximum pressure shown on the tire, always use the
lower rating. Exceeding the recommended maximum pressure may blow the tire off the rim or damage the wheel
rim, which could cause damage to the bike and injury to the rider and bystanders.
The best and safest way to inflate a bicycle tire to the correct pressure is with bicycle pump which has a built-in pressure gauge.
WARNING: There is a safety risk in using gas station air hoses or other air compressors. They are not made for
bicycle tires. They move a large volume of air very rapidly, and will raise the pressure in your tire very rapidly,
which could cause the tube to explode.
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.
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.
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.
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.
2. Tire Valves
There are primarily two kinds of bicycle tire 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. AR
Ī V eBikes have Presta valves.
The Schraeder valve (fig. 18a) is like the valve on a car tire. 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 Schraeder pump fitting, you’ll need a Presta adapter (available at your bike
shop) which screws on to the valve stem once you’ve freed up the valve. The adapter fits into the Schraeder pump fitting. Close
the valve after inflation. To let air out of a Presta valve, open up the valve stem lock nut and depress the valve stem.
EN