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5.4 Brake System
Brake system is the most important for your safety driving, so it is necessary to check
the brake system carefully before driving.
The normal idea is that the bicycle should stop in a short distance if you brake the
bicycle suddenly, but it is wrong. Suddenly
brake will not make the bicycle stop in a
short distance. The bicycle will slide
inertially. It will not only cause danger but
also increase the brake distance. So the brake system is only used for the adjustment of
the speed of bicycle.
Generally, brake system is including the brake lever, braking device (disc brake, V
brake and other brake types) and brake cable.
◆
Brake lever
The structure of the brake lever is shown in picture: the right brake lever controls the
front brake and the left brake lever controls the rear brake. But it may be different in
some countries because of the laws.
﹡
Adjustable screw is used for adjusting the distance between brake pads and rim.
﹡
Effective distance of the brake lever is half of the distance between the brake lever
and the grip. If the brake lever is near to the grip before braking tightly, that means there
is a very large distance between the brake pads and the rim.
◆
Disc brake (as shown in right
Pic.)
Adjustment method for brake
pads:
1.Screw off the position screw;
2.Adjust the distance of brake
pads by left/right moving.
3.Screw on the position screw.
◆
V brake (as shown in left Pic)
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Adjustment method for brake pads:
1. Loosen the fixed screw and you will see three holes on fixed
base;
2. The elasticity will increase if you move the spring upon the
hole. This will increase the distance between brake pads and rim.
And the distance will decrease on the contrary.
◆
Brake cable
﹡
Bifurcation should be avoided for internal
wiring. So it is better to wear a tail sleeve at the
end of the wires.
﹡
The brake cable should be pull out and oiled
regularly to avoid rusting and resistance.
﹡
It is better to wire the brake cable on a line. but if it must be bent, try to avoid small
radian bending as possible.
﹡
The brake cable should not be locked when the handlebar reaches the limit of left and
right turning.
5.5 Shift System
Shift system includes: Shift, front & rear derailleur, chain, flywheel and speed changing
wiring.
The speed changing levels is the number of front crankset plate
×
the number of rear
flywheel plate.
For example: 3 pieces of crankset plate (front)
×
7 pieces of flywheel plate (rear) =21
speed.
◆
Shift
﹡
The shift includes: speed display and finger shift (as shown in the picture).
﹡
Shifts are on both sides of the handle bar. The left one controls the front transmission
