Bicycles, E-Bikes & Micromobility worked example

Service Parts Buffer with daily service parts demand of 95 parts / day: a worked example in bicycles, e-bikes & micromobility

This scenario runs the service parts buffer calculation on the strong side: daily service parts demand of 95 parts / day, with every other input held at its documented default. a dealer, fleet operator, or micromobility brand needs to plan spare parts coverage for repairs and warranty service

The inputs for this scenario

  • Daily service parts demand: 95 parts / day (raised for this scenario; the documented default is 38)
  • Supplier replenishment lead time: 21 days (unchanged)
  • Service parts safety stock: 250 parts (unchanged)

Working through the calculation

  • Applying the documented formula (Parts covering replenishment lead time = daily service parts demand × supplier replenishment lead time) to the inputs above produces each figure below.
  • At this operating point the engine returns 0.02 service parts for protected days of supply, the number this scenario is built around.
  • At this operating point the engine returns 4.52 days for unprotected days.
  • At this operating point the engine returns 95 pieces for inventory.
  • At this operating point the engine returns 21 pieces / day for daily usage.

How this compares with the baseline

  • Against the tool's baseline example, where daily service parts demand sits at 38 parts / day and the headline result is 0.01 service parts, this scenario comes in 150% above the baseline at 0.02 service parts.
  • Use it when setting reorder points for spares, onboarding a new supplier with a known lead time, or reviewing stock after a lead-time change. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Protected days of supply: 0.02 service parts (headline result)
  • Unprotected days: 4.52 days
  • Inventory: 95 pieces
  • Daily usage: 21 pieces / day

Run it with your numbers

  • Every input above is editable in the live Service Parts Buffer calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.