In the lines that follow, I have tried to do a mathematical
determination about the handling of the bicycle (other terms could be :
Such characteristic of the bike ,it's always has been little deal, also
why it is often not held in consideration from the bike's user.
But this characteristic has its importance why it contributes "to form
the character" of the bycicle. In order to make an example practical
,it can be said that , in the races,usual the "passisti"(that is
the cyclist that go fast in the plain )prefers one byke that holds the
line well,that is less reactive of steering regarding the
sprinter or the climbers that , to the contrary, wish that the
bycicle fastly favour their desires of trajectory.
This characteristic is determined from the combination of the head
angle,of the fork rake, and such I have tried to assume, from the
steerer tube height (these quotas are visualized in figure 1 beside).
Usually the problem of the front dimensioning of the bike,
comes resolved (in the rewiews or other pubblications),only describing
the trail. It's famous as the trail depends mathematically,beyond that
on the beam of the wheel ,only from the head angle and the fork rake.
Therefore found the ideal trail value for one bike of 28", of any
ransom it is, the problem of the dimensioning of the steering and the
relative handling, would be resolved.
But then like explaining the fact that ,if on have the fortune to
read a table (reliable) of the sizes of the manufacturer of the
frames,it can be seen that to varying the height of the chassis,
it varies also a little the value of the head angle?
Normally,in the road bike, the head angle leaves from a value little
more than 72 degree for a small frame size, in order to arrive little
beyond the 74 degree for the greater frame size.
With the text that follows, I have tried to attribute a
numerical value to the "Handling", defined terms in the lines over.