A2 · Central Rail
The central rail constrains the load path, keeping the system's travel deterministic rather than letting the pack swing freely on the straps.
A wearable load-transfer system for urban e-bike commuters — engineered to adapt to rider posture and improve stability, comfort, and control in motion.
Leaning forward works against you.
A load path that shortens under lean.
ECS uses a tension-shortening mechanism. As the rider leans, the load body travels down and inward along a guided rail — shrinking the moment arm precisely when it would otherwise grow.
Guided rail + low pivot.
The central rail constrains the load path, keeping the system's travel deterministic rather than letting the pack swing freely on the straps.
The low pivot lets the system articulate with the body, not against it — the load follows the rider's posture instead of resisting it.
Ten components. One load path.
Anchor, rail, pivot, tether, belt — each documented to manufacturing intent and designed to work as a single integrated system.
Validated first. Then translated. Where it stops is a choice.
The system was cardboard-validated for load-path behaviour before being translated toward manufacturing intent — reasoning and validation ahead of form.
Designed to be production-ready, not built as a production unit. Walking-state behaviour is intentionally out of scope — the mechanism rests neutral and performs as a conventional pack.