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Case Study: Flywheel Supply for an online marketplace seller in Central America

Source:Case / Time:2026-09-18

Flywheel for An online marketplace seller in Central America

An online marketplace seller came to us with a flywheel programme for Central America. The brief was ordinary and unforgiving at the same time: a fixed launch window, a landed cost that had to survive freight and duty, and a part that had to match an existing sample. This case records what was specified, what went wrong in sampling and how the bulk order landed.

The starting point

  • A fitment that looked right on paper and failed on the bench
  • A supplier who changed material without saying so
  • Warranty claims traced back to a single lot

Flywheel case study

What was specified

PartFlywheel
ClientAn online marketplace seller
MarketCentral America
Volume5,000 pieces across 3 specifications
Base materialAnodised Aluminium
Sampling rounds4
Delivery window5 weeks from PO to ex-factory
ComplianceECE R90

How it was resolved

  1. The specification was rebuilt around Anodised Aluminium and the tolerance locked before bulk.
  2. A pre-production sample was approved and kept as the golden reference.
  3. Production ran with in-line inspection and a mid-run photo report.
  4. Cartons were packed to the client's own barcode and ratio specification.
  5. Documentation shipped with the goods instead of after them.

Flywheel production run

Result

  • 5,000 pieces delivered inside the 5-week window.
  • Unit cost held within 3.0% of the original quotation.
  • Inspection-related rejection stayed under 1.5%.
  • The specification is on file, so reorders reproduce the approved sample.

What we would repeat

Approve a pre-production sample made from the actual bulk material. Substitute material behaves differently in service.

Planning something similar?

Send the specification you are working to and we will confirm what we can match, what we would change and why.

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