Academy Participatory Design

What is participatory design?

The people who use a tool daily have knowledge no external designer can fully replicate.

Participatory design (PD) is a methodology in which the people who will use a product are actively involved in its design process — not as research subjects or end-of-process testers, but as co-designers with genuine influence over the outcome.

The approach originated in Scandinavian workplace democracy movements of the 1970s. The core insight: domain knowledge lives with the users, not the designers. Ignoring it produces inferior products.

Diagram — traditional top-down design process vs participatory design loop

🔑 Key Concept

Participatory design is not user research. In user research, designers observe and extract insight. In participatory design, users co-produce the design itself.

Participatory design in bicycle engineering

The industry has historically optimised for elite performance — BikeSPEZL expands the circle.

Diagram — participant types and their contributions in the BikeSPEZL model

Riders, fitters, brands, and engineers each contribute different data types

The bicycle industry has historically relied on a small number of professional athletes and brand engineers to drive product development. BikeSPEZL's approach is different. The platform captures and incorporates real-world experience from riders at every level:

1Riders contribute body measurement data that feeds into the BDC population model — improving automatic calculation factors for everyone.
2Fitters contribute fitting outcome data — connecting geometry recommendations to real-world results.
3Brands contribute proprietary rider datasets — enabling geometry optimisation calibrated to their specific target markets.
4Engineers contribute kinematic designs and simulation results — building a shared knowledge base of suspension behaviour.

Participant types in the BikeSPEZL model

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Model accuracy improves with every scan

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Sizing errors reduce with fitting outcome data

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Collective intelligence, not just average data

The feedback loop

Iterative, bidirectional — the platform gets better as the community grows.

Diagram — BikeSPEZL participatory feedback loop (riders → model → recommendations → riders)

Each contribution improves the model for all subsequent users

In a participatory design system, the relationship between designer and user is iterative and bidirectional. BikeSPEZL is built to support this loop:

1More riders → better BDC population model → better automatic body estimates
2More brands → richer geometry dataset → more accurate True_Fit comparisons
3More engineers → expanded kinematic library → broader simulation benchmarks
4More fitters → real fitting outcome data → geometry recommendations grounded in results

💡 Insight

The goal is a platform that gets measurably better as the community grows — not because of top-down feature development, but because users are co-producing the knowledge it runs on.

Why this matters for bike brands

Brands that integrate BikeSPEZL are participating in the loop — not just consuming from it.

Diagram — brand data flow: True_Fit integration → rider sizing data → model improvement → brand benefit

Every rider who uses a True_Fit sizing tool contributes anonymised sizing data that improves the model. Every fitting outcome reported through the platform makes the recommendations more accurate.

✅ Tip

The brand benefits from better sizing data. The rider benefits from better recommendations. Participatory design is not altruism — it is aligned incentive.