Outdoor Power Equipment worked example

Blade Balance Yield at 68% target balance pass rate: a worked example

Suppose target balance pass rate falls to 68%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Calculate the share of mower or trimmer blades that pass balance inspection on the first try, against a target balance pass rate.

The inputs for this scenario

  • Blades passing balance: 242 blades (held at the documented default)
  • Blades balance-tested: 250 blades (held at the documented default)
  • Target balance pass rate: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Blade balance pass rate = blades passing balance ÷ blades balance-tested × 100.
  • Blade balance pass rate works out to 96.8 % at these inputs, and this is the headline figure for the scenario.
  • Gap to balance target works out to -28.8 points at these inputs.
  • Blades passing balance works out to 242 blades at these inputs.
  • Blades balance-tested works out to 250 blades at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target balance pass rate sits at 95% and the headline result is 96.8 %, this scenario lands almost exactly on the baseline at 96.8 %.
  • It computes the blade balance pass rate from blades passing versus blades tested, and the point gap between that rate and your target specification. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Blade balance pass rate: 96.8 % (headline result)
  • Gap to balance target: -28.8 points
  • Blades passing balance: 242 blades
  • Blades balance-tested: 250 blades

Run it with your numbers

  • To rerun this with your own numbers, open the live Blade Balance Yield calculator, set target balance pass rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.