The direct-drive load-path problem
If you have upgraded to direct drive, you already know the feeling: the base is fine, but under load the rig moves. A hard kerb strike, a sudden correction, peak torque through a fast direction change — and you feel the structure give a fraction before the force reaches you. That movement is deflection. It is not cosmetic. Every millimetre the chassis flexes is feedback the base generated that you never received cleanly — softened, delayed, smeared.
Most consumer and profile rigs are assembled from extruded aluminium section bolted at the corners. Profile is convenient, adjustable, and cheap to source. What it is not is drawn for a specific load path. The joints carry load they were not designed around, and the result is the flex you can feel but cannot tune out — because it is in the structure, not the settings.
eSport Simulation approached the problem from first principles. Not "how do we bolt a rig together," but "what does the load path of a direct-drive system actually demand of the structure, and what should the geometry be to carry it." The result is a set of bespoke structural components — each one designed for its specific role in the platform, documented to ASME standard before any metal was cut.
The structure — component by component
The structure is a set of components, each drawn for its job.
Side chassis
The side chassis is the primary structural member.
Engineering verification in progress. We are not going to publish a number we have not verified. Confirmed specifications will be published here once Callum's review is complete and signed off.
Side panel
Engineering verification in progress. We are not going to publish a number we have not verified. Confirmed specifications will be published here once Callum's review is complete and signed off.
Control support
The control support is an integral component, not a bracket added afterward. The steering column angle and the mounting interface were resolved as part of the geometry — the relationship between where your hands sit and where the forces transfer was a design decision, not an adjustment you work around.
Engineering verification in progress. We are not going to publish a number we have not verified. Confirmed specifications will be published here once Callum's review is complete and signed off.
Floor support
The floor support sets the pedal plate position relative to the wheel and seat. Pedals generate the highest sustained loads in the rig — a load cell brake pushes back hard — so where and how the pedal plate mounts is a structural decision, not a convenience one.
Engineering verification in progress. We are not going to publish a number we have not verified. Confirmed specifications will be published here once Callum's review is complete and signed off.
Verified specifications
We are not going to publish a number we have not verified. This audience fact-checks, and a wrong figure is worse than a missing one.
Engineering verification in progress. We are not going to publish a number we have not verified. Confirmed specifications will be published here once Callum's review is complete and signed off.
We are new, and we are not asking for your word.
We would rather show you the drawings, explain the decisions, and let you judge the engineering. Reviews will come from people who owe us nothing. Until then, the drawings are the argument.
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