27
Description
4.3
Wheel and fork
Figure 4:
Components of the wheel, example of front wheel
1
2
3
4
5
6
7
8
9
Tire
Rim
Preload adjuster
Shock absorber
Spoke
Quick release
Hub
Valve
Fork end of the shock absorber
4.3.1
Valve
Each wheel has a valve. It is used to fill the
tire
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
, a
Presta valve
or a
Schrader valve
.
1
2
4
5
8
7
3
9
6
BULLS_BOSCH_Purion_BBC
Page 27