SET-UP MOTORBIKE SIMULATOR Software for the performance simulation of the racing motorbike and to analyze the acquired data

How it works?

SIMULATION

SET-UP MOTORBIKE SIMULATOR through the implementation of a specific dynamic calculation and a virtual rider calculates the performance of the motorcycle on a determined track taking into account of all the main factors that influence it.

The software simulation variables can be chosen or detected from each team and mechanic with extreme readiness and are targeted to feature the motorcycle in all its aspects:

MOTORBIKE FEATURES	Weight, wheelbase, and center gravity position of the motorbike with rider. Frontal area, dynamic center pressure, and coefficient drag.
ENGINE POWER	Power curve detected on the dyno, or directly calculated from the software processing the acquired data.
FINAL and GEARBOX RATIOS	Primary transmission ratio, and gearbox ratios. Front and rear sprocket used.
BRAKE USE	Front and rear braking distribution.
TIRES FEATURES	Dimensions, shape, radial and lateral stiffness. Adherence coefficient, that can be calculated directly from the software processing the acquired data.
ENGINE BRAKE	Through some data of the engine (displacement, n° cylinders, stroke, compression ratio) the software can estimate the engine brake, and to simulate its effects on the performance.
TRACK RACING LINE	Can be calculated directly from the software processing the acquired data, in this manner the simulation will be performed on the specific line traveled from your rider.

The realism of the simulations performed by the SET-UP MOTORBIKE SIMULATION is verified through comparisons with the data collected by telemetry. The graph below shows an example of calculated speed compared through simulation (red) with that measured by telemetry (blue), you notice the absolute consistency of the results with deviations due exclusively to driving differences between the real and the virtual rider in some points of the track.

SET-UP MOTORBIKE SIMULATOR - Absolute consistency between the calculated results and measured experimentally - by NT-Project

This consistency therefore allows to exploit SET-UP MOTORBIKE SIMULATOR to predict the behavior of the motorcycle and its performance as a function of the technical choices and of the set-up which are to be performed. This allows to identify in advance the correct direction of fine tuning of the bike to vary of the tracks, of the track conditions, of the physical characteristics of the rider, etc.

As you have seen among the simulation variables there aren't the suspensions and their adjustments. This has been done because the virtual rider would be able to adapt his guide to the suspension setup and therefore the comparison of performance varying the suspension setup would be of little significance. We've therefore decided to separate the two aspects, on the one hand to simulate the performance to optimize balance, engine, gear ratios, brake, etc. and then use this simulation as a basis for evaluating how the performance varies in function of the suspension setup modifications.

The simulation variables to evaluate the effects of the suspensions setup are:

CHASSIS GEOMETRY	Position of the front sprocket respect to the pivot of the rear swingarm, to evaluate the effect the chain pull. Adjustments steering plate to evaluate steering and fork angle.
FRONT SUSPENSION	Fork length and bottom out length. Stiffness and preload springs. Compression and extension damping. Wheel weight.
REAR SUSPENSION	Kinematics geometry. Shock length and bottom out length. Stiffness and preload springs. Compression and extension damping. Wheel weight.

Thanks to this simulation it is possible to see how the suspension setup choices modify the loads on the front and rear wheels, and then to see in every point of the track how change the rider's ability to accelerate or brake with more or less effectively.

ACQUIRED DATA ANALYSIS

The SET-UP MOTORBIKE SIMULATOR software combines the simulation functions with those of analysis of the acquired data, already present in the Motorbike Analysis software, this allows to multiply the advantages of both the aspects. As you can see in the detail by looking at the presentation of the Motorbike Analysis software, the calculations carried out by the software allows you to have much more informations from the acquired data, and above all these informations can be easily interpreted to evaluate the performance in all its aspects. In fact, the software performs:

TIRES ANALYSIS	The software performs a dynamic simulation using the acquired data, this allows to evaluate, based on the structural characteristics of the tire, the coefficient of adhesion that the tires provided during the examined lap, and above all how much the grip available has been exploited at each point of the track, both laterally (corner), both longitudinally (traction, and braking). In this way it is possible to have immediate informations both on the balance of the motorbike, both on the rider's driving.
SLIP ANGLE ANALYSIS UNDERSTEER-OVERSTEER	Always through the dynamic simulation calculations, thanks to the tire model developed in the software, it is possible to have informations on how much the front and rear tires slip, and therefore on the understeer or the oversteer conditions that the rider has to face at every point of the track.
TIRES TEMPERATURE ANALYSIS	Based on the loads calculated on the wheels, and on the lateral and longitudinal slipping of the tires, through a specific calculation model, the software simulates the trend of the tire temperature at each point of the track, and in the three areas of the tread, right side, center, and left side. It will then be possible to see how the rider's driving, and the setup used, influence this aspect, and evaluate the areas of the track where the tires can overheat, or where, on the contrary, the tread remains cold.
SUSPENSIONS ANALYSIS	The software calculates how changes the load available at the front and rear due to the presence of the suspensions and of the setup used. Thanks to this, it simulates the speed that you might have under braking, cornering, and traction, due to the different load generated by the suspensions setup, and the related lap time. It will therefore be easy to compare the different setups and to understand what can be most effective for the specific driving style of the rider.
ENGINE ANALYSIS	Finally, through the data acquired in the session, the software calculates the power curve that the engine has developed, this allows you to immediately understand if the engine is working correctly, by comparing the results of the previous sessions.
TRACK RACING LINE ANALYIS	The software through the acquired data calculates the track racing line traveled by the rider, and above all the radius of curvature at each point of the track, this allows to understand if the rider has had a smooth driving, or if there are points where he presents difficulties that may depend from an incorrect interpretation of the track, or from setup problems.

Thanks to these analysis it is possible to easily compare the different laps and the different sessions to immediately understand the advantages and disadvantages of the different setup choices, both on the behavior of the motorbike and of the tires, both on the rider's driving.

COMBINATION SIMULATION - ACQUIRED DATA ANALYSIS

The software functionalities of simulation and of acquired data analysis can be used separately for specific purposes, but they can also be combined to obtain further informations.

First, the calculations on the acquired data can be used to obtain input data for the simulation. In fact thanks to the software it is possible to obtain from the acquired data:

tires adherence coefficients	With these data it is possible to carry out a simulation that is fully consistent with the specific behavior of the engine and of the tires, and with the real interpretation of the rider of the track.
exploitation adherence
engine power curve
track racing line traveled

Thanks to this it is possible to exploit the simulation to analyze other aspects of the performance obtained on the track, such as:

INDIVIDUATION BEST TRACK LINE

As you know, the track racing line has a considerable importance on the lap time that you can get. From the analysis of the lap times obtained by the rider during a session it is not easy to understand if the improvement or slowdown depends on a different line, or on the fact that he rode better. With the simulation, on the other hand, this is possible, therefore, thanks to the software, can be calculated the lines of the various laps, and can be simulated the lap time that the virtual rider is able to obtain with the different lines calculated. It will then be possible to show to the rider the best line that he used.

OPTIMIZATION RIDER DRIVING

Calculating from the acquired data the grip, the engine power, and the racing line traveled by the rider, it is possible to carry out a simulation using these data and to compare the driving of the virtual rider with that of the real rider, in this way it will be easy to see where the rider can improve in driving, helping him to identify the points on which he has to work more in the guide, or for his characteristics, or for setup problems to be solved with the technicians..

These are just some examples of how the possibility of combining simulation and analysis of the acquired data allows to obtain a lot of further informations.

As you have seen from this brief description, the SET-UP MOTORBIKE SIMULATOR software is an extremely useful tool for technicians and engineers, and riders, to improve the motorbike, the setting, and the driving, both before going to the track, both, session after session, and race after race.

The software was born 10 years ago with the name Performance Track Simulation also used by engineering specialized in the design of racetracks to analyze the performance on new circuits and have useful data for the approvals by the federations (FIM, DORNA, FMI, etc.), then it became SET-UP Bike, orienting its functions to the needs of technicians and engineers for setting up of the motorbike on the track, and today it has become
SET-UP MOTORBIKE SIMULATOR, with further developments and functions, optimized also thanks to the experiences accumulated in these years with our users in the CIV, CEV, BSBK, SS, SST, etc.

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