SUSPENSION DESIGN Software to analyze and to design suspensions and balance of racing motorbike

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 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
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

FRONT SUSPENSION OPERATION

The front suspension forks in the racing motorbike 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 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. The software shows also the vertical movement of the fron wheel under load.


If have been entered also the steering and fork geometry the software calculates also the front wheel trail

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)

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.

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.

The software calculates also the position of the wheel center in function of the mechanism geometry and of the shock absorber length, so is possible to see how change the height of motorbike intervening on the rear suspension.

If have been entered the features of the shock absorber, and of the transmission, the software calculates the vertical movement of the rear wheel under load, and the vertical movement on acceleration to evaluate the chain force effect and the squat.

Motorbike rear suspension operation analysis and design - Wheel movement under load - Suspension Design by NT-Project

Motorbike rear suspension operation analysis and design - Squat - Chain force effect on acceleration - Suspension Design by NT-Project

REAR SUSPENSION DESIGN

The set-up of the suspensions besides to adsorb the ground roughness, is fundmental because determine the balance and therefore the dynamic of the motorbike in different phases of driving, for this the software, together with the static analysis of the balance, allows to simulate how changes the balance during the phases of acceleration, braking and corner.

ACCELERATION	The software simulates an acceleration (fixing starting speed and longitudinal grip) and calculates how work the suspensions, and how therefore changes the motorbike balance. In the calculation the software take account also of the chain force for the position of the sprocket respect to the rear arm pivot.

BRAKING	The software simulates a braking (fixing starting speed and longitudinal grip) and calculates how work the suspensions, and how therefore changes the motorbike balance. In the calculation is possible to simulate both a braking with front and rear brakes, both using the only front brake.

CORNER	The software simulates entry and exit of a corner a constant speed (fixing starting speed and lateral grip) and calculates how work the suspensions, and how therefore changes the motorbike balance.

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 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.

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.

As you have seen from this brief description, the Suspension Design software allows you to see the operation of the suspension in all conditions and how this affects the balance of the racing 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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