034-11461_1.0_29.01.2018
25
Description
4.3
Wheel and fork
Figure 5:
Components of the wheel, example of front wheel
1
Tyre
2
Rim
3
Suspension fork head with setting wheel
4
Fork
5
Spoke
6
Quick release
7
Hub
8
Valve
9
Fork end of the suspension fork
4.3.1
Valve
Each wheel has a valve. It is used to fill the
tyre
with
air. There is a valve cap on each valve. The screw-on
valve cap keeps out dust and dirt.
The bicycle either has a classical
Dunlop valve
or a
Presta valve.
1
2
4
5
8
7
3
9
6