Publicité
Les langues disponibles
Les langues disponibles
A.3 FIT
WARNING!
If your bicycle does not fit properly, you may lose control and fall.
A.3.1 Standover Height
1. Diamond frame bicycles
Standover height is the basic element of bike fit. It is the
distance from the ground to the top of the bicycle's frame at
that point where your crotch is when straddling the bike.
To check for correct standover height, straddle the bike while
wearing the kind of shoes in which you'll be riding, and bounce
vigorously on your heels. If your crotch touches the frame, the
bike is too big for you. Don't even ride the bike around the
block. A bike which you ride only on paved surfaces and never
take off-road should give you a minimum standover height
clearance of two inches (5 cm).
A bike that you'll ride on unpaved surfaces should give you a
minimum of three inches (7.5 cm) of standover height
clearance. And a bike that you'll use off road should give you
four inches (10 cm) or more of clearance. Figure 1.2
2. Step-through frame bicycles
Standover height does not apply to bicycles with step-through
frames. Instead, the limiting dimension is determined by saddle
height range. You must be able to adjust your saddle position
as described in C.7 without exceeding the limits set by the
height of the top of the seat tube and the Minimum Insertion
or Maximum Extension mark on the seat post.
Minimum
3 inch (7.5 cm)
clearance
Top tube
SAFETY A
Figure 1.2
13
Publicité
