The software Motorbike Design is structured to give to technicians and
mechanics all the answers that allow to understand the
features of the motorbike, and easily to study the modifications most
opportune.
Allows in fact to calculate:
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BALANCE and GRAVITY of the MOTORBIKE |
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MOTORBIKE GEOMETRY and FUNDMENTAL TECHNICAL PARAMETERS |
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REAR SUSPENSION OPERATION |
Below we will see in detail the different work areas of the
software:
BALANCE and GRAVITY of the MOTORBIKE
The position of the center of gravity is the characteristic that mainly
influences the dynamic behavior of the motorbike, for this reason in the software Motorbike Design has been included acalculation that
allows to determine it with a simple experimental test.
Thanks to the calculation inserted in the software it will be sufficient to do a
couple of weighs of the motorbike to have the exact position of the
center of gravity, both the horizontal that determines the balance,
both the vertical that influences the load transfer.
The test studied allows to perform this calculation both for the
only motorbike on the ground, both for the motorbike with the rider on board, in this way
you can then see how the position and the weight of the rider affect the balance and the load transfer of the motorbike.
MOTORBIKE GEOMETRY and FUNDMENTAL TECHNICAL PARAMETERS
Other aspect very importante is the geometry of the motorbike and the
fundmental technical parameters deriving from it. In fact,
the set-up adjustments are aimed at varying these characteristics,
therefore to know the starting situation and how the interventions that you'll make
will affect each variable isfundamental
to make adjustments and modifications in the direction
actually desired.
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Through the insertion of the data of simple chassis measurements, combined with the dimensions of the suspension (below will see in the
detail what concerns the rear suspension) the
software Motorbike Design calculates all the fundamental technical parameters
:
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| Wheelbase[mm] |
| Fork Height [mm] |
| Fork Angle [°] |
| Steering Angle [°] |
| Trail [mm] |
| Motorbike Front Load [%] |
| Motorbike Gravity Y [mm] |
| Total Front Load [%] |
| Total Gravity Y [mm] |
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Inserting also
the characteristics of the fork springs e
of the shock spring, the software calculates how change
the fundamental technical parameters putting the motorbike on the ground, and
with the rider on board. Wil be therefore easily to see
the values of these parameters in function of
characteristics of the suspensions and of the rider and motorbike weight.
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After the analysis phase of the initial configuration the great
feature of the software Motorbike Design is that to allow to see with extreme easiness the effects that some modifications
techniques, or on the setting, have on the balance and on the fundamental technical parameters
.
In fact is possible to see what changes by modifying:
| - fork offset and steering angle (measures L and M) |
| - dimensions front and rear wheels |
| - fork length |
| - shock length |
| - rider weight |
| - saddle position |
| - rear suspension geometry (which we will see in the
detail to follow) |
| - spring fork preload and stiffness |
| - spring shock preload and stiffness |
For example we show the case
of replacing the fork with a longer one than 10 mm. Thanks to the software Motorbike Design in an instant
you will see how change the balance and all the
fundamental technical parameters.
This can be done for all the quantities indicated above
simply by entering the new value that you want to test
in the appropriate field beside to the field of the initial configuration. |
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The software at the end of the calculation also shows the image of the
chassis scheme based on the data entered, so it will be easy
to check eventual errors in the data entry. In the image is also shown the
position of the center of gravity, both of the motorbike, both of
the motorbike with rider on board.
REAR SUSPENSION OPERATION
This area can be considered as software in the software,
in fact it allows to analyze all the main types of
rear suspension, therefore it will be easy not only see the
initial characteristics of your suspension, but also
design modifications or study a new suspension that has a
new behavior in relation at your needs.
| PRO-LINK |
PRO-LEVER |
UNIT-PRO-LINK |
UNI-TRACK |
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| BACK-LINK |
MONO-CROSS |
FULL-FLOATER |
CLASSIC |
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The data entry is extremely simple, in fact is sufficient
choose the scheme of your suspension and put the dimensions of
single elements shown in the figure.
At the end of the calculation the software shows the scheme of the
suspension inserted, so it will be easy to check for eventual
errors in the data entered.
The rear suspension is
formed from a kinematic to obtain a variable stiffness curve, therefore to know how work the suspension for the different
positions of the rear arm is fundmental to see which will be the
rear balance in function of the load that act.
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Depending on the type of mechanism and its geometry, the software
calculates the shock movement in function of the wheel
movement from the ground, or in function of the rear arm
rotation angle. In addition calculates the lever ratio
between the force acting on the wheel and that on the shock.
In this way is easy to understand how change the stiffness
of the suspension during the movement, and evaluate
therefore eventuals modifications at the kinematic geometry
to optimize the operation of the suspension for your need.
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This functionality of the software as well as in the
analysis of an existing suspension, can be used also
to
design a new suspension or to modify the existing suspension
by varying the lengths of the linkages and thus obtaining
different progressivity for different needs.
For example, we show how thanks to the software Motorbike
Design is easy to see what happens to the behavior of
rear suspension by changing the length of an
element.
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Thanks to this functionality you can then see how the changes
on the rear suspension affects the balance and the features
of the motorbike, and also how the behavior changes according to the loads
to which is subject the rear.
As you have seen from this brief description the software
Motorbike Design is an full instrument to analyze and to
study the features most important of the motorbike and of the rear suspension, in fact from the balance, to the fundmental technical parameters,
until to rear suspension operation, you can have a clear picture with a great simplicity
of use.
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