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Case Study: Flywheel Supply for a taxi fleet in North America

Source:Case / Time:2026-09-18

Flywheel for A taxi fleet in North America

A taxi fleet came to us with a flywheel programme for North 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

  • Documentation that arrived after the container shipped
  • Packing that arrived crushed at the port
  • A supplier who changed material without saying so

Flywheel case study

What was specified

PartFlywheel
ClientA taxi fleet
MarketNorth America
Volume10,000 pieces across 4 specifications
Base materialForged Aluminium
Sampling rounds2
Delivery window5 weeks from PO to ex-factory
ComplianceSAE J431

How it was resolved

  1. The specification was rebuilt around Forged 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

  • 10,000 pieces delivered inside the 5-week window.
  • Unit cost held within 2.0% of the original quotation.
  • Inspection-related rejection stayed under 2.0%.
  • The specification is on file, so reorders reproduce the approved sample.

What we would repeat

Keep one accountable owner on both sides. Most delays come from hand-offs, not from machines.

Planning something similar?

Ask for the current catalogue and the specification sheet for this line.

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