The other areas, however, relate to the geometry and the set-up of the
front and rear suspensions.
With regard to the front suspension, the data required for
static calculation (motorcycle sag and rider sag) are the fork
angle and fork set-up (stiffness and spring preload).
If, instead, you want to make the calculation of the motorbike
balance in the different driving conditions, you also need to
insert the fork damping and the weight of the front wheel.
To calculate of the trail must be entered the dimensions of the
steer geometry, and of the fork.
For the kinematic analysis of the rear suspension, simply
insert the position of the key points and the dimensions shown in the figure
according to the type.
For the calculation of the motorbike balance in static
conditions (motorcycle
sag and rider sag) in addition to the kinematic geometry, should
be entered the shock setting (stiffness and spring preload).
Instead for the calculation of the motorbike balance in the
differents driving phases, should be entered the shock damping
and the weight of the wheel. Furthermore, since that the
software calculates also the chain force, should be entered the
numbers of teeth of front and rear sprocket, the pitch chain,
and the position of the front sprocket.
The data is all easily detectable with simple measurements or
are known based on the fork and shock features that are being
used.
As regards the features of the fork and of the shock absorber,
to define the behavior of the spring and damper as an
alternative to using technical data, experimental data can be
inserted.
