About

Four engineers,
one view of the car.

GSD RaceDyn is a vehicle dynamics consultancy working across historic motorsport and modern GT racing. Three vehicle dynamics engineers and a dedicated aerodynamicist, which means changes and their consequences are assessed by the team rather than by a single mind.

Based in Pangbourne, Berkshire. Working across UK and European championships.

Background

How the practice got here.

The physics does not change between a 1965 sports racer on cross-plies and a current GT3 car. The constraints do — and knowing which ones you are allowed to move is most of the job.

Nigel first began vehicle dynamics analysis as a means to improve his own racecar in the late 1970s. After seeing the performance gains, friends, teams and others sharing the paddock became interested in his work. What had started out as a means to become more competitive at his hobby soon became a full-time job.

In 1982, Nigel developed the first edition of the Vehicle Dynamics Suite that has evolved since into what we use today. Thanks to the software's flexibility, it can be applied to a multitude of suspension types. The bottom line: if it has four wheels and you can drive it, we can model and simulate it.

Historic and modern motorsport offer different perspectives on the same engineering fundamentals. Historic exposes the principles of vehicle dynamics, demanding an understanding of mechanical and aerodynamic behaviour, setup compromise and driver feedback. Modern motorsport brings advanced data and analysis tools that allow those fundamentals to be explored and refined. The combination gives us a more complete understanding of vehicle behaviour — from the principles through to how the car performs on track.

Alongside the consultancy, the work extends into the regulatory side of the sport — Balance of Performance submissions, driver categorisation cases under FIA regulations, and the evidence analysis that sits behind both.

Method

How the work is done.

Four things that shape every project, and that are worth knowing before you decide whether we are the right fit.

Measure before changing anything

Every report opens with the car as it actually is, not as the setup sheet claims it is. Hardpoints get measured, corner weights get checked, and the analysis starts from what is on the ground. Assumptions are where wasted test days come from.

The whole car, not one corner of it

Aerodynamics, structure and kinematics define how the car performs together. Change one and the others move with it. Having all of them in the same building means a recommendation accounts for the consequences, not just the intent.

Numbers you can build from

Findings arrive as a specific, tabulated setup — rates, dimensions, pressures, damper settings, aerodynamics — with old against new detailed throughout wherever changes are made.

The reasoning comes with it

You are told why, not just what. The aim is to explain and prove the driver's feedback, helping the team understand the current state of the car and how the changes interact to improve performance.

Toolkit

What sits behind the analysis.

Most of the analysis tooling is written in-house, which means it can be adapted to a car or a regulation set rather than the other way round.

Analysis methods

  • Quasi-static lap time simulation
  • Suspension kinematic analysis
  • Four-corner load transfer modelling
  • Dynamic ride height analysis
  • Vertical load based tyre modelling

Software

  • MATLAB
  • CFD for full-car aerodynamics
  • FEA for structural assessment
  • LIDAR point-cloud processing

Data systems

  • Maths channel libraries
  • Sector and stint analysis
  • Tyre degradation tracking
  • Fuel and consumption modelling

Regulatory

  • Balance of Performance submissions
  • FIA driver categorisation cases
  • Homologation comparison
  • Historic development within eligibility criteria