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SUSPENSION DESIGN Software per la messa a punto delle sospensioni e delle moto da cross  - by NT-Project

SUSPENSION DESIGN CROSS is a software designed to help technicians and mechanics in the development of racing cross motorbikes. In fact, it allows you to simulate the behavior of the motorbike in the most frequent conditions on cross tracks and to identify the most appropriate settings. It is also useful during the design phase to define the characteristics of the springs, either traditional or air-based, according to the conditions of use envisaged for the motorcycle.
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How it works?

The software Suspension Design can be used both to analyze the behavior and the setting of the suspensions, both to study and to find the features of the suspensiond to have a specific balance of the racing motorbike.

In the software you must simply enter the specifications geometric and phisical of the motorbike, those of the rider, the geometry of the kinematic of the rear suspension, and the setting of the fork and of the shock.

These data are all easily detectable with simple measurements.

At this point the software allows to analyze immediately:

FRONT SUSPENSION OPERATION in function of the characteristics of the fork, spring, air, oil
REAR SUSPENSION OPERATION in function of the kinematic geometry
MOTORBIKE BALANCE in function of the geometric and phisical features of the motorbike
MOTORBIKE BALANCE - MOTORCYCLE SAG in function of the geometric and phisical features of the motorbike, and of the suspensions setting.
MOTORBIKE BEHAVIOR ON THE JUMP is possible to set the speed to face the jump, the ramp and the height of the jumps, and then evaluate the behavior of the motorbike in the specific conditions that affect
MOTORBIKE BEHAVIOR ON THE WHOOPS
MOTORBIKE BALANCE WITH RIDER - RIDER SAG in function of the phisical features of the rider, of the rider position on the motorbike, and of the suspension setting.
MOTORBIKE BALANCE ON ACCELERATION
MOTORBIKE BALANCE ON BRAKING
MOTORBIKE BALANCE ON CORNER

FRONT SUSPENSION OPERATION

The front suspension forks in the motocross racing bike in recent years have had an evolution that has led them to use in addition to the traditional springs, even springs to create from an air cushion, this has made more difficult to interpret the settings. For this reason, the Suspension Design Cross software has an area where by inserting the main characteristics of the traditional spring or of the chamber with air and oil it is possible to quickly evaluate the real behavior of the fork according to its excursion. Analysis of operation and design of front suspension of motorcycle cross - Spring Force - Suspension Design Cross by NT-Project
Analysis of operation and design of front suspension of motorcycle cross - Air Force - Suspension Design Cross by NT-Project Analysis of operation and design of front suspension of motorcycle cross - Total Force - Suspension Design Cross by NT-Project

REAR SUSPENSION OPERATION

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.

The software Suspension Design can analyze the behavior of all the main kinematic of rear suspension used in the current racing motorbike (pro-link - pro-lever - unit-pro-link - back-link - full-floater -mono-cross - unit-track)

Motorbike rear suspension operation analysis and design - Suspension Design Cross by NT-Project Motorbike rear suspension operation analysis and design - Suspension Design Cross by NT-Project
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.
Motorbike rear suspension operation analysis and design - Suspension Design Cross by NT-Project
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.

MOTORBIKE BEHAVIOR ON TRACK

In the drives on the cross tracks, in addition to braking, cornering and acceleration, to face in the best way the jumps and the whoops, is essential to have the best performance. To do this it is necessary to have a specific suspension setting that allows the maximum stability in every situation. The Suspension Design Cross software therefore simulates the behavior that the racing cross motorbike has going on a jump or or the whoops, so you can see in advance how the suspension works according to the chosen settings, and then go to optimize the set-up for different tracks and needs.

ON A JUMP It is simulated to face a jump, being able to set the attack speed, the angle of the ramp, and the height of the jump. It will therefore be possible to evaluate all the situations that the different cross tracks present.
   
Jump Simulation - Suspensions operation and fine tuning setting up - Suspension Design Cross by Nt-Project Jump Simulation - Suspensions operation and fine tuning setting up - Suspension Design Cross by Nt-Project

Jump Simulation - Suspensions operation and fine tuning setting up - Suspension Design Cross by NT-Project

 

ON THE WHOOPS It is simulated to face a series of jumps (whoops), being able to set the attack speed, the angle of the ramps, the height of the jumps, and the number of jumps. It will therefore be possible to evaluate then this very present phase in the cross tracks and that is an hard test for the suspensions.
   
Whoops Simulation - Suspensions operation and fine tuning setting up - Suspension Design Cross by NT-Project Whoops Simulation - Suspensions operation and fine tuning setting up - Suspension Design Cross by NT-Project

Whoops Simulation - Suspensions operation and fine tuning setting up - Suspension Design Cross by NT-Project

As you have seen from this brief description, the Suspension Design Cross software allows you to see the operation of the suspension in all conditions and how this affects the balance of the racing cross motorbike both from a static point of view and in the main driving phases, this allows you to evaluate and compare the different suspension set-ups by predicting how these will influence the balance and thus helping you to modify the set-up according to the needs of the rider and of the track that arise from time to time.
 

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